[rust] cache-aware DP - approx tree (#1934)

f9633fa9 · Byron Hsu · GitHub · 087ab832 · f9633fa9 · f9633fa9
Unverified Commit f9633fa9 authored Nov 10, 2024 by Byron Hsu Committed by GitHub Nov 10, 2024
13 changed files
--- a/benchmark/multi_turn_chat/long_prompt_multi_turn.py
+++ b/benchmark/multi_turn_chat/long_prompt_multi_turn.py
+import itertools
+import json
+import random
+import string
+import threading
+import time
+from argparse import ArgumentParser
+
+import sglang as sgl
+from sglang.srt.hf_transformers_utils import get_tokenize
+from sglang.test.test_utils import (
+    add_common_sglang_args_and_parse,
+    select_sglang_backend,
+)
+from sglang.utils import dump_state_text
+
+random.seed(42)
+
+
+def gen_prompt(tokenizer, token_num):
+    all_available_tokens = list(tokenizer.get_vocab().values())
+    selected_tokens = random.choices(all_available_tokens, k=token_num)
+    ret = tokenizer.decode(selected_tokens)
+    return ret
+
+
+def gen_arguments(args, tokenizer):
+    multi_qas = [
+        {"system_prompt": gen_prompt(tokenizer, args.system_prompt_len), "qas": []}
+        for _ in range(args.num_qa)
+    ]
+    for i in range(args.num_qa):
+        qas = multi_qas[i]["qas"]
+        for j in range(args.turns):
+            qas.append(
+                {
+                    "prompt": gen_prompt(tokenizer, args.len_q),
+                    "new_tokens": args.len_a,
+                }
+            )
+    return multi_qas
+
+
+@sgl.function
+def multi_turns(s, system_prompt, qas):
+    s += system_prompt
+
+    for qa in qas:
+        s += qa["prompt"]
+        s += sgl.gen(max_tokens=qa["new_tokens"], ignore_eos=True)
+
+
+def main(args):
+    tokenizer = get_tokenizer(args.tokenizer, trust_remote_code=args.trust_remote_code)
+
+    multi_qas = gen_arguments(args, tokenizer)
+
+    backend = select_sglang_backend(args)
+
+    tic = time.time()
+    states = multi_turns.run_batch(
+        multi_qas,
+        temperature=0,
+        backend=backend,
+        num_threads=args.parallel,
+        progress_bar=True,
+    )
+    latency = time.time() - tic
+
+    print(f"Latency: {latency:.3f}")
+
+    dump_state_text(f"tmp_output_{args.backend}.txt", states)
+
+    with open(args.result_file, "a") as fout:
+        value = {
+            "task": "multi_turn_system_prompt_chat",
+            "backend": args.backend,
+            "num_gpus": 1,
+            "latency": round(latency, 3),
+            "num_requests": args.num_qa,
+            "num_turns": args.turns,
+            "other": {
+                "parallel": args.parallel,
+            },
+        }
+        fout.write(json.dumps(value) + "\n")
+
+
+if __name__ == "__main__":
+    parser = ArgumentParser()
+    parser.add_argument("--turns", type=int, default=8)
+    parser.add_argument("--num-qa", type=int, default=128)
+    parser.add_argument("--system-prompt-len", type=int, default=2048)
+    parser.add_argument("--len-q", type=int, default=32)
+    parser.add_argument("--len-a", type=int, default=128)
+    parser.add_argument(
+        "--tokenizer", type=str, default="meta-llama/Meta-Llama-3-8B-Instruct"
+    )
+    parser.add_argument("--trust-remote-code", action="store_true")
+    args = add_common_sglang_args_and_parse(parser)
+
+    print(args)
+    main(args)
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -8,7 +8,7 @@ version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5f7b0a21988c1bf877cf4759ef5ddaac04c1c9fe808c9142ecb78ba97d97a28a"
 dependencies = [
- "bitflags",
+ "bitflags 2.6.0",
 "bytes",
 "futures-core",
 "futures-sink",
@@ -30,8 +30,8 @@ dependencies = [
 "actix-service",
 "actix-utils",
 "ahash",
- "base64",
- "bitflags",
+ "base64 0.22.1",
+ "bitflags 2.6.0",
 "brotli",
 "bytes",
 "bytestring",
@@ -43,7 +43,7 @@ dependencies = [
 "http 0.2.12",
 "httparse",
 "httpdate",
- "itoa 1.0.11",
+ "itoa",
 "language-tags",
 "local-channel",
 "mime",
@@ -156,7 +156,7 @@ dependencies = [
 "futures-core",
 "futures-util",
 "impl-more",
- "itoa 1.0.11",
+ "itoa",
 "language-tags",
 "log",
 "mime",
@@ -239,9 +239,9 @@ dependencies = [

 [[package]]
 name = "anstream"
-version = "0.6.15"
+version = "0.6.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "64e15c1ab1f89faffbf04a634d5e1962e9074f2741eef6d97f3c4e322426d526"
+checksum = "8acc5369981196006228e28809f761875c0327210a891e941f4c683b3a99529b"
 dependencies = [
 "anstyle",
 "anstyle-parse",
@@ -254,36 +254,36 @@ dependencies = [

 [[package]]
 name = "anstyle"
-version = "1.0.8"
+version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1bec1de6f59aedf83baf9ff929c98f2ad654b97c9510f4e70cf6f661d49fd5b1"
+checksum = "55cc3b69f167a1ef2e161439aa98aed94e6028e5f9a59be9a6ffb47aef1651f9"

 [[package]]
 name = "anstyle-parse"
-version = "0.2.5"
+version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eb47de1e80c2b463c735db5b217a0ddc39d612e7ac9e2e96a5aed1f57616c1cb"
+checksum = "3b2d16507662817a6a20a9ea92df6652ee4f94f914589377d69f3b21bc5798a9"
 dependencies = [
 "utf8parse",
 ]

 [[package]]
 name = "anstyle-query"
-version = "1.1.1"
+version = "1.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d36fc52c7f6c869915e99412912f22093507da8d9e942ceaf66fe4b7c14422a"
+checksum = "79947af37f4177cfead1110013d678905c37501914fba0efea834c3fe9a8d60c"
 dependencies = [
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]

 [[package]]
 name = "anstyle-wincon"
-version = "3.0.4"
+version = "3.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bf74e1b6e971609db8ca7a9ce79fd5768ab6ae46441c572e46cf596f59e57f8"
+checksum = "2109dbce0e72be3ec00bed26e6a7479ca384ad226efdd66db8fa2e3a38c83125"
 dependencies = [
 "anstyle",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]

 [[package]]
@@ -310,15 +310,27 @@ dependencies = [
 "miniz_oxide",
 "object",
 "rustc-demangle",
- "windows-targets",
+ "windows-targets 0.52.6",
 ]

+[[package]]
+name = "base64"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
+
 [[package]]
 name = "base64"
 version = "0.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"

+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
 [[package]]
 name = "bitflags"
 version = "2.6.0"
@@ -384,9 +396,9 @@ dependencies = [

 [[package]]
 name = "cc"
-version = "1.1.31"
+version = "1.1.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c2e7962b54006dcfcc61cb72735f4d89bb97061dd6a7ed882ec6b8ee53714c6f"
+checksum = "baee610e9452a8f6f0a1b6194ec09ff9e2d85dea54432acdae41aa0761c95d70"
 dependencies = [
 "jobserver",
 "libc",
@@ -441,9 +453,22 @@ checksum = "1462739cb27611015575c0c11df5df7601141071f07518d56fcc1be504cbec97"

 [[package]]
 name = "colorchoice"
-version = "1.0.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3fd119d74b830634cea2a0f58bbd0d54540518a14397557951e79340abc28c0"
+checksum = "5b63caa9aa9397e2d9480a9b13673856c78d8ac123288526c37d7839f2a86990"
+
+[[package]]
+name = "console"
+version = "0.15.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e1f83fc076bd6dd27517eacdf25fef6c4dfe5f1d7448bafaaf3a26f13b5e4eb"
+dependencies = [
+ "encode_unicode",
+ "lazy_static",
+ "libc",
+ "unicode-width",
+ "windows-sys 0.52.0",
+]

 [[package]]
 name = "convert_case"
@@ -496,6 +521,31 @@ dependencies = [
 "cfg-if",
 ]

+[[package]]
+name = "crossbeam-deque"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "613f8cc01fe9cf1a3eb3d7f488fd2fa8388403e97039e2f73692932e291a770d"
+dependencies = [
+ "crossbeam-epoch",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-epoch"
+version = "0.9.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b82ac4a3c2ca9c3460964f020e1402edd5753411d7737aa39c3714ad1b5420e"
+dependencies = [
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.8.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "22ec99545bb0ed0ea7bb9b8e1e9122ea386ff8a48c0922e43f36d45ab09e0e80"
+
 [[package]]
 name = "crypto-common"
 version = "0.1.6"
@@ -506,6 +556,41 @@ dependencies = [
 "typenum",
 ]

+[[package]]
+name = "darling"
+version = "0.20.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f63b86c8a8826a49b8c21f08a2d07338eec8d900540f8630dc76284be802989"
+dependencies = [
+ "darling_core",
+ "darling_macro",
+]
+
+[[package]]
+name = "darling_core"
+version = "0.20.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95133861a8032aaea082871032f5815eb9e98cef03fa916ab4500513994df9e5"
+dependencies = [
+ "fnv",
+ "ident_case",
+ "proc-macro2",
+ "quote",
+ "strsim",
+ "syn",
+]
+
+[[package]]
+name = "darling_macro"
+version = "0.20.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d336a2a514f6ccccaa3e09b02d41d35330c07ddf03a62165fcec10bb561c7806"
+dependencies = [
+ "darling_core",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "deranged"
 version = "0.3.11"
@@ -515,6 +600,37 @@ dependencies = [
 "powerfmt",
 ]

+[[package]]
+name = "derive_builder"
+version = "0.20.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "507dfb09ea8b7fa618fcf76e953f4f5e192547945816d5358edffe39f6f94947"
+dependencies = [
+ "derive_builder_macro",
+]
+
+[[package]]
+name = "derive_builder_core"
+version = "0.20.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2d5bcf7b024d6835cfb3d473887cd966994907effbe9227e8c8219824d06c4e8"
+dependencies = [
+ "darling",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "derive_builder_macro"
+version = "0.20.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab63b0e2bf4d5928aff72e83a7dace85d7bba5fe12dcc3c5a572d78caffd3f3c"
+dependencies = [
+ "derive_builder_core",
+ "syn",
+]
+
 [[package]]
 name = "derive_more"
 version = "0.99.18"
@@ -539,16 +655,54 @@ dependencies = [
 ]

 [[package]]
-name = "dtoa"
-version = "0.4.8"
+name = "dirs"
+version = "5.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44c45a9d03d6676652bcb5e724c7e988de1acad23a711b5217ab9cbecbec2225"
+dependencies = [
+ "dirs-sys",
+]
+
+[[package]]
+name = "dirs-sys"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "520f05a5cbd335fae5a99ff7a6ab8627577660ee5cfd6a94a6a929b52ff0321c"
+dependencies = [
+ "libc",
+ "option-ext",
+ "redox_users",
+ "windows-sys 0.48.0",
+]
+
+[[package]]
+name = "displaydoc"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97369cbbc041bc366949bc74d34658d6cda5621039731c6310521892a3a20ae0"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "either"
+version = "1.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "60b1af1c220855b6ceac025d3f6ecdd2b7c4894bfe9cd9bda4fbb4bc7c0d4cf0"
+
+[[package]]
+name = "encode_unicode"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "56899898ce76aaf4a0f24d914c97ea6ed976d42fec6ad33fcbb0a1103e07b2b0"
+checksum = "a357d28ed41a50f9c765dbfe56cbc04a64e53e5fc58ba79fbc34c10ef3df831f"

 [[package]]
 name = "encoding_rs"
-version = "0.8.34"
+version = "0.8.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b45de904aa0b010bce2ab45264d0631681847fa7b6f2eaa7dab7619943bc4f59"
+checksum = "75030f3c4f45dafd7586dd6780965a8c7e8e285a5ecb86713e63a79c5b2766f3"
 dependencies = [
 "cfg-if",
 ]
@@ -569,6 +723,15 @@ dependencies = [
 "windows-sys 0.52.0",
 ]

+[[package]]
+name = "esaxx-rs"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d817e038c30374a4bcb22f94d0a8a0e216958d4c3dcde369b1439fec4bdda6e6"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "fastrand"
 version = "2.1.1"
@@ -743,9 +906,9 @@ dependencies = [

 [[package]]
 name = "hashbrown"
-version = "0.15.0"
+version = "0.15.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e087f84d4f86bf4b218b927129862374b72199ae7d8657835f1e89000eea4fb"
+checksum = "3a9bfc1af68b1726ea47d3d5109de126281def866b33970e10fbab11b5dafab3"

 [[package]]
 name = "heck"
@@ -759,6 +922,23 @@ version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d231dfb89cfffdbc30e7fc41579ed6066ad03abda9e567ccafae602b97ec5024"

+[[package]]
+name = "hf-hub"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b780635574b3d92f036890d8373433d6f9fc7abb320ee42a5c25897fc8ed732"
+dependencies = [
+ "dirs",
+ "indicatif",
+ "log",
+ "native-tls",
+ "rand",
+ "serde",
+ "serde_json",
+ "thiserror",
+ "ureq",
+]
+
 [[package]]
 name = "http"
 version = "0.2.12"
@@ -767,7 +947,7 @@ checksum = "601cbb57e577e2f5ef5be8e7b83f0f63994f25aa94d673e54a92d5c516d101f1"
 dependencies = [
 "bytes",
 "fnv",
- "itoa 1.0.11",
+ "itoa",
 ]

 [[package]]
@@ -778,7 +958,7 @@ checksum = "21b9ddb458710bc376481b842f5da65cdf31522de232c1ca8146abce2a358258"
 dependencies = [
 "bytes",
 "fnv",
- "itoa 1.0.11",
+ "itoa",
 ]

 [[package]]
@@ -829,7 +1009,7 @@ dependencies = [
 "http 1.1.0",
 "http-body",
 "httparse",
- "itoa 1.0.11",
+ "itoa",
 "pin-project-lite",
 "smallvec",
 "tokio",
@@ -871,9 +1051,9 @@ dependencies = [

 [[package]]
 name = "hyper-util"
-version = "0.1.9"
+version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "41296eb09f183ac68eec06e03cdbea2e759633d4067b2f6552fc2e009bcad08b"
+checksum = "df2dcfbe0677734ab2f3ffa7fa7bfd4706bfdc1ef393f2ee30184aed67e631b4"
 dependencies = [
 "bytes",
 "futures-channel",
@@ -888,14 +1068,149 @@ dependencies = [
 "tracing",
 ]

+[[package]]
+name = "icu_collections"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db2fa452206ebee18c4b5c2274dbf1de17008e874b4dc4f0aea9d01ca79e4526"
+dependencies = [
+ "displaydoc",
+ "yoke",
+ "zerofrom",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_locid"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13acbb8371917fc971be86fc8057c41a64b521c184808a698c02acc242dbf637"
+dependencies = [
+ "displaydoc",
+ "litemap",
+ "tinystr",
+ "writeable",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_locid_transform"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "01d11ac35de8e40fdeda00d9e1e9d92525f3f9d887cdd7aa81d727596788b54e"
+dependencies = [
+ "displaydoc",
+ "icu_locid",
+ "icu_locid_transform_data",
+ "icu_provider",
+ "tinystr",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_locid_transform_data"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fdc8ff3388f852bede6b579ad4e978ab004f139284d7b28715f773507b946f6e"
+
+[[package]]
+name = "icu_normalizer"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "19ce3e0da2ec68599d193c93d088142efd7f9c5d6fc9b803774855747dc6a84f"
+dependencies = [
+ "displaydoc",
+ "icu_collections",
+ "icu_normalizer_data",
+ "icu_properties",
+ "icu_provider",
+ "smallvec",
+ "utf16_iter",
+ "utf8_iter",
+ "write16",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_normalizer_data"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8cafbf7aa791e9b22bec55a167906f9e1215fd475cd22adfcf660e03e989516"
+
+[[package]]
+name = "icu_properties"
+version = "1.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93d6020766cfc6302c15dbbc9c8778c37e62c14427cb7f6e601d849e092aeef5"
+dependencies = [
+ "displaydoc",
+ "icu_collections",
+ "icu_locid_transform",
+ "icu_properties_data",
+ "icu_provider",
+ "tinystr",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_properties_data"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67a8effbc3dd3e4ba1afa8ad918d5684b8868b3b26500753effea8d2eed19569"
+
+[[package]]
+name = "icu_provider"
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 dependencies = [
- "unicode-bidi",
- "unicode-normalization",
+ "idna_adapter",
+ "smallvec",
+ "utf8_iter",
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+dependencies = [
+ "icu_normalizer",
+ "icu_properties",
 ]

 [[package]]
@@ -914,12 +1229,34 @@ dependencies = [
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+[[package]]
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+dependencies = [
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+ "instant",
+ "number_prefix",
+ "portable-atomic",
+ "unicode-width",
+]
+
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+dependencies = [
+ "cfg-if",
+]
+
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@@ -933,10 +1270,22 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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 [[package]]
-name = "itoa"
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-checksum = "8324a32baf01e2ae060e9de58ed0bc2320c9a2833491ee36cd3b4c414de4db8c"
+checksum = "b1c173a5686ce8bfa551b3563d0c2170bf24ca44da99c7ca4bfdab5418c3fe57"
+dependencies = [
+ "either",
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+
+[[package]]
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+checksum = "ba291022dbbd398a455acf126c1e341954079855bc60dfdda641363bd6922569"
+dependencies = [
+ "either",
+]

 [[package]]
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@@ -968,18 +1317,40 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4345964bb142484797b161f473a503a434de77149dd8c7427788c6e13379388"

+[[package]]
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+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
+
 [[package]]
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 checksum = "8e9489c2807c139ffd9c1794f4af0ebe86a828db53ecdc7fea2111d0fed085d1"

+[[package]]
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+checksum = "c0ff37bd590ca25063e35af745c343cb7a0271906fb7b37e4813e8f79f00268d"
+dependencies = [
+ "bitflags 2.6.0",
+ "libc",
+]
+
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 checksum = "78b3ae25bc7c8c38cec158d1f2757ee79e9b3740fbc7ccf0e59e4b08d793fa89"

+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "643cb0b8d4fcc284004d5fd0d67ccf61dfffadb7f75e1e71bc420f4688a3a704"
+
 [[package]]
 name = "local-channel"
 version = "0.1.5"
@@ -1013,6 +1384,22 @@ version = "0.4.22"
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 checksum = "a7a70ba024b9dc04c27ea2f0c0548feb474ec5c54bba33a7f72f873a39d07b24"

+[[package]]
+name = "macro_rules_attribute"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a82271f7bc033d84bbca59a3ce3e4159938cb08a9c3aebbe54d215131518a13"
+dependencies = [
+ "macro_rules_attribute-proc_macro",
+ "paste",
+]
+
+[[package]]
+name = "macro_rules_attribute-proc_macro"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8dd856d451cc0da70e2ef2ce95a18e39a93b7558bedf10201ad28503f918568"
+
 [[package]]
 name = "memchr"
 version = "2.7.4"
@@ -1034,6 +1421,12 @@ version = "0.3.17"
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 checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a"

+[[package]]
+name = "minimal-lexical"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
+
 [[package]]
 name = "miniz_oxide"
 version = "0.8.0"
@@ -1056,6 +1449,27 @@ dependencies = [
 "windows-sys 0.52.0",
 ]

+[[package]]
+name = "monostate"
+version = "0.1.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d208407d7552cd041d8cdb69a1bc3303e029c598738177a3d87082004dc0e1e"
+dependencies = [
+ "monostate-impl",
+ "serde",
+]
+
+[[package]]
+name = "monostate-impl"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7ce64b975ed4f123575d11afd9491f2e37bbd5813fbfbc0f09ae1fbddea74e0"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "native-tls"
 version = "0.2.12"
@@ -1074,28 +1488,26 @@ dependencies = [
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 [[package]]
-name = "num-conv"
-version = "0.1.0"
+name = "nom"
+version = "7.1.3"
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-checksum = "51d515d32fb182ee37cda2ccdcb92950d6a3c2893aa280e540671c2cd0f3b1d9"
+checksum = "d273983c5a657a70a3e8f2a01329822f3b8c8172b73826411a55751e404a0a4a"
+dependencies = [
+ "memchr",
+ "minimal-lexical",
+]

 [[package]]
-name = "num-traits"
-version = "0.1.43"
+name = "num-conv"
+version = "0.1.0"
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-dependencies = [
- "num-traits 0.2.19",
-]
+checksum = "51d515d32fb182ee37cda2ccdcb92950d6a3c2893aa280e540671c2cd0f3b1d9"

 [[package]]
-name = "num-traits"
-version = "0.2.19"
+name = "number_prefix"
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-checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
-dependencies = [
- "autocfg",
-]
+checksum = "830b246a0e5f20af87141b25c173cd1b609bd7779a4617d6ec582abaf90870f3"

 [[package]]
 name = "object"
@@ -1112,13 +1524,35 @@ version = "1.20.2"
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 checksum = "1261fe7e33c73b354eab43b1273a57c8f967d0391e80353e51f764ac02cf6775"

+[[package]]
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+checksum = "8c4b31c8722ad9171c6d77d3557db078cab2bd50afcc9d09c8b315c59df8ca4f"
+dependencies = [
+ "bitflags 1.3.2",
+ "libc",
+ "once_cell",
+ "onig_sys",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b829e3d7e9cc74c7e315ee8edb185bf4190da5acde74afd7fc59c35b1f086e7"
+dependencies = [
+ "cc",
+ "pkg-config",
+]
+
 [[package]]
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6174bc48f102d208783c2c84bf931bb75927a617866870de8a4ea85597f871f5"
 dependencies = [
- "bitflags",
+ "bitflags 2.6.0",
 "cfg-if",
 "foreign-types",
 "libc",
@@ -1156,6 +1590,12 @@ dependencies = [
 "vcpkg",
 ]

+[[package]]
+name = "option-ext"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
+
 [[package]]
 name = "parking_lot"
 version = "0.12.3"
@@ -1176,7 +1616,7 @@ dependencies = [
 "libc",
 "redox_syscall",
 "smallvec",
- "windows-targets",
+ "windows-targets 0.52.6",
 ]

 [[package]]
@@ -1193,9 +1633,9 @@ checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"

 [[package]]
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-version = "0.2.14"
+version = "0.2.15"
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-checksum = "bda66fc9667c18cb2758a2ac84d1167245054bcf85d5d1aaa6923f45801bdd02"
+checksum = "915a1e146535de9163f3987b8944ed8cf49a18bb0056bcebcdcece385cece4ff"

 [[package]]
 name = "pin-utils"
@@ -1241,9 +1681,9 @@ dependencies = [

 [[package]]
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+version = "0.22.6"
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-checksum = "3d922163ba1f79c04bc49073ba7b32fd5a8d3b76a87c955921234b8e77333c51"
+checksum = "f402062616ab18202ae8319da13fa4279883a2b8a9d9f83f20dbade813ce1884"
 dependencies = [
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 "indoc",
@@ -1259,9 +1699,9 @@ dependencies = [

 [[package]]
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-checksum = "bc38c5feeb496c8321091edf3d63e9a6829eab4b863b4a6a65f26f3e9cc6b179"
+checksum = "b14b5775b5ff446dd1056212d778012cbe8a0fbffd368029fd9e25b514479c38"
 dependencies = [
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@@ -1269,9 +1709,9 @@ dependencies = [

 [[package]]
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+version = "0.22.6"
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-checksum = "94845622d88ae274d2729fcefc850e63d7a3ddff5e3ce11bd88486db9f1d357d"
+checksum = "9ab5bcf04a2cdcbb50c7d6105de943f543f9ed92af55818fd17b660390fc8636"
 dependencies = [
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@@ -1279,9 +1719,9 @@ dependencies = [

 [[package]]
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+version = "0.22.6"
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 dependencies = [
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@@ -1291,9 +1731,9 @@ dependencies = [

 [[package]]
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+version = "0.22.6"
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+checksum = "36c011a03ba1e50152b4b394b479826cad97e7a21eb52df179cd91ac411cbfbe"
 dependencies = [
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 "proc-macro2",
@@ -1341,20 +1781,62 @@ dependencies = [
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 ]

+[[package]]
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+version = "1.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b418a60154510ca1a002a752ca9714984e21e4241e804d32555251faf8b78ffa"
+dependencies = [
+ "either",
+ "rayon-core",
+]
+
+[[package]]
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+dependencies = [
+ "either",
+ "itertools 0.11.0",
+ "rayon",
+]
+
+[[package]]
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+checksum = "1465873a3dfdaa8ae7cb14b4383657caab0b3e8a0aa9ae8e04b044854c8dfce2"
+dependencies = [
+ "crossbeam-deque",
+ "crossbeam-utils",
+]
+
 [[package]]
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b6dfecf2c74bce2466cabf93f6664d6998a69eb21e39f4207930065b27b771f"
 dependencies = [
- "bitflags",
+ "bitflags 2.6.0",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba009ff324d1fc1b900bd1fdb31564febe58a8ccc8a6fdbb93b543d33b13ca43"
+dependencies = [
+ "getrandom",
+ "libredox",
+ "thiserror",
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 [[package]]
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-checksum = "38200e5ee88914975b69f657f0801b6f6dccafd44fd9326302a4aaeecfacb1d8"
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 dependencies = [
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 "memchr",
@@ -1387,11 +1869,11 @@ checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"

 [[package]]
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-checksum = "f713147fbe92361e52392c73b8c9e48c04c6625bce969ef54dc901e58e042a7b"
+checksum = "a77c62af46e79de0a562e1a9849205ffcb7fc1238876e9bd743357570e04046f"
 dependencies = [
- "base64",
+ "base64 0.22.1",
 "bytes",
 "encoding_rs",
 "futures-core",
@@ -1462,11 +1944,11 @@ dependencies = [

 [[package]]
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-version = "0.38.37"
+version = "0.38.39"
 source = "registry+https://github.com/rust-lang/crates.io-index"
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+checksum = "375116bee2be9ed569afe2154ea6a99dfdffd257f533f187498c2a8f5feaf4ee"
 dependencies = [
- "bitflags",
+ "bitflags 2.6.0",
 "errno",
 "libc",
 "linux-raw-sys",
@@ -1475,11 +1957,13 @@ dependencies = [

 [[package]]
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-version = "0.23.15"
+version = "0.23.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fbb44d7acc4e873d613422379f69f237a1b141928c02f6bc6ccfddddc2d7993"
+checksum = "eee87ff5d9b36712a58574e12e9f0ea80f915a5b0ac518d322b24a465617925e"
 dependencies = [
+ "log",
 "once_cell",
+ "ring",
 "rustls-pki-types",
 "rustls-webpki",
 "subtle",
@@ -1539,7 +2023,7 @@ version = "2.11.1"
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 checksum = "897b2245f0b511c87893af39b033e5ca9cce68824c4d7e7630b5a1d339658d02"
 dependencies = [
- "bitflags",
+ "bitflags 2.6.0",
 "core-foundation",
 "core-foundation-sys",
 "libc",
@@ -1564,18 +2048,18 @@ checksum = "61697e0a1c7e512e84a621326239844a24d8207b4669b41bc18b32ea5cbf988b"

 [[package]]
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+version = "1.0.214"
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-checksum = "3ea7893ff5e2466df8d720bb615088341b295f849602c6956047f8f80f0e9bc1"
+checksum = "f55c3193aca71c12ad7890f1785d2b73e1b9f63a0bbc353c08ef26fe03fc56b5"
 dependencies = [
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 [[package]]
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-checksum = "7e85ad2009c50b58e87caa8cd6dac16bdf511bbfb7af6c33df902396aa480fa5"
+checksum = "de523f781f095e28fa605cdce0f8307e451cc0fd14e2eb4cd2e98a355b147766"
 dependencies = [
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 "quote",
@@ -1584,13 +2068,13 @@ dependencies = [

 [[package]]
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+version = "1.0.132"
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+checksum = "d726bfaff4b320266d395898905d0eba0345aae23b54aee3a737e260fd46db03"
 dependencies = [
- "dtoa",
- "itoa 0.3.4",
- "num-traits 0.1.43",
+ "itoa",
+ "memchr",
+ "ryu",
 "serde",
 ]

@@ -1601,7 +2085,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d3491c14715ca2294c4d6a88f15e84739788c1d030eed8c110436aafdaa2f3fd"
 dependencies = [
 "form_urlencoded",
- "itoa 1.0.11",
+ "itoa",
 "ryu",
 "serde",
 ]
@@ -1619,6 +2103,7 @@ dependencies = [
 "reqwest",
 "serde",
 "serde_json",
+ "tokenizers",
 ]

 [[package]]
@@ -1678,6 +2163,24 @@ version = "0.9.8"
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 checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"

+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5851699c4033c63636f7ea4cf7b7c1f1bf06d0cc03cfb42e711de5a5c46cf326"
+dependencies = [
+ "base64 0.13.1",
+ "nom",
+ "serde",
+ "unicode-segmentation",
+]
+
+[[package]]
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+checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
+
 [[package]]
 name = "strsim"
 version = "0.11.1"
@@ -1692,9 +2195,9 @@ checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"

 [[package]]
 name = "syn"
-version = "2.0.85"
+version = "2.0.87"
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-checksum = "5023162dfcd14ef8f32034d8bcd4cc5ddc61ef7a247c024a33e24e1f24d21b56"
+checksum = "25aa4ce346d03a6dcd68dd8b4010bcb74e54e62c90c573f394c46eae99aba32d"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -1710,13 +2213,24 @@ dependencies = [
 "futures-core",
 ]

+[[package]]
+name = "synstructure"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8af7666ab7b6390ab78131fb5b0fce11d6b7a6951602017c35fa82800708971"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3c879d448e9d986b661742763247d3693ed13609438cf3d006f51f5368a5ba6b"
 dependencies = [
- "bitflags",
+ "bitflags 2.6.0",
 "core-foundation",
 "system-configuration-sys",
 ]
@@ -1750,6 +2264,26 @@ dependencies = [
 "windows-sys 0.59.0",
 ]

+[[package]]
+name = "thiserror"
+version = "1.0.68"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "02dd99dc800bbb97186339685293e1cc5d9df1f8fae2d0aecd9ff1c77efea892"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7c61ec9a6f64d2793d8a45faba21efbe3ced62a886d44c36a009b2b519b4c7e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "time"
 version = "0.3.36"
@@ -1757,7 +2291,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5dfd88e563464686c916c7e46e623e520ddc6d79fa6641390f2e3fa86e83e885"
 dependencies = [
 "deranged",
- "itoa 1.0.11",
+ "itoa",
 "num-conv",
 "powerfmt",
 "serde",
@@ -1782,19 +2316,47 @@ dependencies = [
 ]

 [[package]]
-name = "tinyvec"
-version = "1.8.0"
+name = "tinystr"
+version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "445e881f4f6d382d5f27c034e25eb92edd7c784ceab92a0937db7f2e9471b938"
+checksum = "9117f5d4db391c1cf6927e7bea3db74b9a1c1add8f7eda9ffd5364f40f57b82f"
 dependencies = [
- "tinyvec_macros",
+ "displaydoc",
+ "zerovec",
 ]

 [[package]]
-name = "tinyvec_macros"
-version = "0.1.1"
+name = "tokenizers"
+version = "0.20.3"
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-checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
+checksum = "67b67c92f6d705e2a1d106fb0b28c696f9074901a9c656ee5d9f5de204c39bf7"
+dependencies = [
+ "aho-corasick",
+ "derive_builder",
+ "esaxx-rs",
+ "getrandom",
+ "hf-hub",
+ "indicatif",
+ "itertools 0.12.1",
+ "lazy_static",
+ "log",
+ "macro_rules_attribute",
+ "monostate",
+ "onig",
+ "paste",
+ "rand",
+ "rayon",
+ "rayon-cond",
+ "regex",
+ "regex-syntax",
+ "serde",
+ "serde_json",
+ "spm_precompiled",
+ "thiserror",
+ "unicode-normalization-alignments",
+ "unicode-segmentation",
+ "unicode_categories",
+]

 [[package]]
 name = "tokio"
@@ -1885,12 +2447,6 @@ version = "1.17.0"
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 checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"

-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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-
 [[package]]
 name = "unicode-ident"
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@@ -1898,14 +2454,32 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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 [[package]]
-name = "unicode-normalization"
-version = "0.1.24"
+name = "unicode-normalization-alignments"
+version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5033c97c4262335cded6d6fc3e5c18ab755e1a3dc96376350f3d8e9f009ad956"
+checksum = "43f613e4fa046e69818dd287fdc4bc78175ff20331479dab6e1b0f98d57062de"
 dependencies = [
- "tinyvec",
+ "smallvec",
 ]

+[[package]]
+name = "unicode-segmentation"
+version = "1.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f6ccf251212114b54433ec949fd6a7841275f9ada20dddd2f29e9ceea4501493"
+
+[[package]]
+name = "unicode-width"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7dd6e30e90baa6f72411720665d41d89b9a3d039dc45b8faea1ddd07f617f6af"
+
+[[package]]
+name = "unicode_categories"
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+checksum = "39ec24b3121d976906ece63c9daad25b85969647682eee313cb5779fdd69e14e"
+
 [[package]]
 name = "unindent"
 version = "0.2.3"
@@ -1918,17 +2492,48 @@ version = "0.9.0"
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 checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"

+[[package]]
+name = "ureq"
+version = "2.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b74fc6b57825be3373f7054754755f03ac3a8f5d70015ccad699ba2029956f4a"
+dependencies = [
+ "base64 0.22.1",
+ "flate2",
+ "log",
+ "native-tls",
+ "once_cell",
+ "rustls",
+ "rustls-pki-types",
+ "serde",
+ "serde_json",
+ "url",
+ "webpki-roots",
+]
+
 [[package]]
 name = "url"
-version = "2.5.2"
+version = "2.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22784dbdf76fdde8af1aeda5622b546b422b6fc585325248a2bf9f5e41e94d6c"
+checksum = "8d157f1b96d14500ffdc1f10ba712e780825526c03d9a49b4d0324b0d9113ada"
 dependencies = [
 "form_urlencoded",
 "idna",
 "percent-encoding",
 ]

+[[package]]
+name = "utf16_iter"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8232dd3cdaed5356e0f716d285e4b40b932ac434100fe9b7e0e8e935b9e6246"
+
+[[package]]
+name = "utf8_iter"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
+
 [[package]]
 name = "utf8parse"
 version = "0.2.2"
@@ -2031,9 +2636,9 @@ checksum = "65fc09f10666a9f147042251e0dda9c18f166ff7de300607007e96bdebc1068d"

 [[package]]
 name = "wasm-streams"
-version = "0.4.1"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4e072d4e72f700fb3443d8fe94a39315df013eef1104903cdb0a2abd322bbecd"
+checksum = "15053d8d85c7eccdbefef60f06769760a563c7f0a9d6902a13d35c7800b0ad65"
 dependencies = [
 "futures-util",
 "js-sys",
@@ -2052,6 +2657,15 @@ dependencies = [
 "wasm-bindgen",
 ]

+[[package]]
+name = "webpki-roots"
+version = "0.26.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "841c67bff177718f1d4dfefde8d8f0e78f9b6589319ba88312f567fc5841a958"
+dependencies = [
+ "rustls-pki-types",
+]
+
 [[package]]
 name = "windows-registry"
 version = "0.2.0"
@@ -2060,7 +2674,7 @@ checksum = "e400001bb720a623c1c69032f8e3e4cf09984deec740f007dd2b03ec864804b0"
 dependencies = [
 "windows-result",
 "windows-strings",
- "windows-targets",
+ "windows-targets 0.52.6",
 ]

 [[package]]
@@ -2069,7 +2683,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1d1043d8214f791817bab27572aaa8af63732e11bf84aa21a45a78d6c317ae0e"
 dependencies = [
- "windows-targets",
+ "windows-targets 0.52.6",
 ]

 [[package]]
@@ -2079,7 +2693,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4cd9b125c486025df0eabcb585e62173c6c9eddcec5d117d3b6e8c30e2ee4d10"
 dependencies = [
 "windows-result",
- "windows-targets",
+ "windows-targets 0.52.6",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+dependencies = [
+ "windows-targets 0.48.5",
 ]

 [[package]]
@@ -2088,7 +2711,7 @@ version = "0.52.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
 dependencies = [
- "windows-targets",
+ "windows-targets 0.52.6",
 ]

 [[package]]
@@ -2097,7 +2720,22 @@ version = "0.59.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
 dependencies = [
- "windows-targets",
+ "windows-targets 0.52.6",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
+dependencies = [
+ "windows_aarch64_gnullvm 0.48.5",
+ "windows_aarch64_msvc 0.48.5",
+ "windows_i686_gnu 0.48.5",
+ "windows_i686_msvc 0.48.5",
+ "windows_x86_64_gnu 0.48.5",
+ "windows_x86_64_gnullvm 0.48.5",
+ "windows_x86_64_msvc 0.48.5",
 ]

 [[package]]
@@ -2106,28 +2744,46 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
 dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
+ "windows_aarch64_gnullvm 0.52.6",
+ "windows_aarch64_msvc 0.52.6",
+ "windows_i686_gnu 0.52.6",
 "windows_i686_gnullvm",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
+ "windows_i686_msvc 0.52.6",
+ "windows_x86_64_gnu 0.52.6",
+ "windows_x86_64_gnullvm 0.52.6",
+ "windows_x86_64_msvc 0.52.6",
 ]

+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
+
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"

+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"

+[[package]]
+name = "windows_i686_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.52.6"
@@ -2140,30 +2796,90 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"

+[[package]]
+name = "windows_i686_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"

+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"

+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"

+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"

+[[package]]
+name = "write16"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d1890f4022759daae28ed4fe62859b1236caebfc61ede2f63ed4e695f3f6d936"
+
+[[package]]
+name = "writeable"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e9df38ee2d2c3c5948ea468a8406ff0db0b29ae1ffde1bcf20ef305bcc95c51"
+
+[[package]]
+name = "yoke"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c5b1314b079b0930c31e3af543d8ee1757b1951ae1e1565ec704403a7240ca5"
+dependencies = [
+ "serde",
+ "stable_deref_trait",
+ "yoke-derive",
+ "zerofrom",
+]
+
+[[package]]
+name = "yoke-derive"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28cc31741b18cb6f1d5ff12f5b7523e3d6eb0852bbbad19d73905511d9849b95"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
 [[package]]
 name = "zerocopy"
 version = "0.7.35"
@@ -2185,12 +2901,55 @@ dependencies = [
 "syn",
 ]

+[[package]]
+name = "zerofrom"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91ec111ce797d0e0784a1116d0ddcdbea84322cd79e5d5ad173daeba4f93ab55"
+dependencies = [
+ "zerofrom-derive",
+]
+
+[[package]]
+name = "zerofrom-derive"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ea7b4a3637ea8669cedf0f1fd5c286a17f3de97b8dd5a70a6c167a1730e63a5"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
 [[package]]
 name = "zeroize"
 version = "1.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ced3678a2879b30306d323f4542626697a464a97c0a07c9aebf7ebca65cd4dde"

+[[package]]
+name = "zerovec"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa2b893d79df23bfb12d5461018d408ea19dfafe76c2c7ef6d4eba614f8ff079"
+dependencies = [
+ "yoke",
+ "zerofrom",
+ "zerovec-derive",
+]
+
+[[package]]
+name = "zerovec-derive"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6eafa6dfb17584ea3e2bd6e76e0cc15ad7af12b09abdd1ca55961bed9b1063c6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "zstd"
 version = "0.13.2"

--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -21,5 +21,6 @@ bytes = "1.8.0"
 rand = "0.8.5"
 reqwest = { version = "0.12.8", features = ["stream"] }
 futures-util = "0.3"
-serde_json = "=1.0.1"
+serde_json = "1.0"
 pyo3 = { version = "0.22.5", features = ["extension-module"] }
+tokenizers = { version = "0.20.3", features = ["http"] }
--- a/rust/py_src/dp_demo.py
+++ b/rust/py_src/dp_demo.py
+import argparse
+import os
+import signal
+import subprocess
+import sys
+import time
+from typing import Dict, List
+
+import requests
+from sglang_router import PolicyType, Router
+
+# Global processes list for cleanup
+_processes: List[subprocess.Popen] = []
+
+
+def cleanup_processes(signum=None, frame=None):
+    """Cleanup function to kill all worker processes."""
+    print("\nCleaning up processes...")
+    for process in _processes:
+        try:
+            # Kill the entire process group
+            pgid = os.getpgid(process.pid)
+            os.killpg(pgid, signal.SIGKILL)
+            process.wait()
+        except:
+            pass
+    sys.exit(1)
+
+
+# Register signal handlers
+signal.signal(signal.SIGINT, cleanup_processes)
+signal.signal(signal.SIGTERM, cleanup_processes)
+
+
+def parse_args():
+    """Parse command line arguments."""
+    parser = argparse.ArgumentParser(description="Launch SGLang Router Server")
+    parser.add_argument(
+        "--host", type=str, default="localhost", help="Host address to bind the server"
+    )
+    parser.add_argument(
+        "--port", type=int, default=30000, help="Base port number for workers"
+    )
+    parser.add_argument(
+        "--dp",
+        type=int,
+        default=2,
+        help="Number of worker processes (degree of parallelism)",
+    )
+    parser.add_argument(
+        "--model-path", type=str, required=True, help="Path to the model"
+    )
+    parser.add_argument(
+        "--local-tokenizer-path",
+        type=str,
+        required=True,
+        help="Path to the local tokenizer",
+    )
+    return parser.parse_args()
+
+
+def launch_workers(args) -> tuple[List[subprocess.Popen], List[str]]:
+    """Launch all worker processes concurrently using subprocess."""
+    processes = []
+    worker_urls = []
+
+    # Launch each worker process
+    for i in range(args.dp):
+        port = args.port + i
+        url = f"http://{args.host}:{port}"
+        worker_urls.append(url)
+        # TODO: replace this with launch_server, and move this file to sglang/ because it depends on sglang
+        # We don't
+        command = f"export CUDA_VISIBLE_DEVICES={i}; python -m sglang.launch_server --model-path {args.model_path} --host {args.host} --port {port}"
+        print(command)
+        process = subprocess.Popen(command, shell=True)
+        processes.append(process)
+        _processes.append(process)  # Add to global list for cleanup
+
+    return processes, worker_urls
+
+
+def wait_for_healthy_workers(worker_urls: List[str], timeout: int = 300) -> bool:
+    """Block until all workers are healthy or timeout is reached."""
+    start_time = time.time()
+    healthy_workers: Dict[str, bool] = {url: False for url in worker_urls}
+
+    while time.time() - start_time < timeout:
+        print("checking healthiness...")
+        all_healthy = True
+
+        for url in worker_urls:
+            if not healthy_workers[url]:  # Only check workers that aren't healthy yet
+                try:
+                    response = requests.get(f"{url}/health")
+                    if response.status_code == 200:
+                        print(f"Worker at {url} is healthy")
+                        healthy_workers[url] = True
+                    else:
+                        all_healthy = False
+                except requests.RequestException:
+                    all_healthy = False
+
+        if all_healthy:
+            print("All workers are healthy!")
+            return True
+
+        time.sleep(5)
+
+    # If we get here, we've timed out
+    unhealthy_workers = [url for url, healthy in healthy_workers.items() if not healthy]
+    print(f"Timeout waiting for workers: {unhealthy_workers}")
+    return False
+
+
+def main():
+    """Main function to launch the router and workers."""
+    args = parse_args()
+    processes = None
+
+    try:
+        # Launch all workers concurrently
+        processes, worker_urls = launch_workers(args)
+
+        # Block until all workers are healthy
+        if not wait_for_healthy_workers(worker_urls):
+            raise RuntimeError("Failed to start all workers")
+
+        # Initialize and start the router
+        router = Router(
+            worker_urls=worker_urls,
+            policy=PolicyType.ApproxTree,
+            tokenizer_path=args.local_tokenizer_path,
+        )
+
+        print("Starting router...")
+        router.start()
+
+        # Keep the main process running
+        try:
+            while True:
+                time.sleep(1)
+        except KeyboardInterrupt:
+            print("\nShutting down...")
+
+    except Exception as e:
+        print(f"Error: {e}")
+    finally:
+        # Cleanup: Kill all worker processes
+        if processes:
+            for process in processes:
+                process.kill()
+
+
+if __name__ == "__main__":
+    main()
--- a/rust/py_src/main.py
+++ b/rust/py_src/main.py
+from sglang_router import PolicyType, Router
+
+router = Router(
+    worker_urls=[
+        "http://localhost:30000",
+        "http://localhost:30001",
+    ],
+    policy=PolicyType.ApproxTree,
+    tokenizer_path="/shared/public/elr-models/meta-llama/Meta-Llama-3.1-8B-Instruct/07eb05b21d191a58c577b4a45982fe0c049d0693/tokenizer.json",
+)
+
+router.start()
--- a/rust/readme.md
+++ b/rust/readme.md
@@ -2,6 +2,11 @@

 SGLang router is a standalone module implemented in Rust to achieve data parallelism across SGLang instances.

+## Architecture
+
+1. `src/`: rust impl of the router
+2. `py_src/`: lightweight python interafce on top of rust python binding. This will be published as `sglang-router` pypi package
+
 ## Installation

 WIP. Ideally just
@@ -83,6 +88,23 @@ $ maturin develop
 🛠 Installed sglang_router-0.0.0
 ```

+4. Alternatively, if you don't want to create a venv, you can also build the binding as a wheel and install it
+
+```bash
+$ maturin build --interpreter python
+...
+   Compiling pyo3 v0.22.6
+   Compiling pyo3-macros v0.22.6
+   Compiling sglang_router v0.0.0 (/home/jobuser/sglang/rust)
+    Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.67s
+🖨  Copied external shared libraries to package sglang_router.libs directory:
+    /usr/lib/libssl.so.1.1.1k
+    /usr/lib/libcrypto.so.1.1.1k
+📦 Built wheel for CPython 3.10 to <wheel path>
+
+$ pip install <wheel path>
+```
+
 ## Usage

 1. Launch worker instances

--- a/sglang @ 760552e0
+++ b/sglang @ 760552e0
+Subproject commit 760552e068edb58d9cd6e68aa1b714c247027d92
--- a/rust/src/lib.rs
+++ b/rust/src/lib.rs
+// Python Binding
 use pyo3::prelude::*;
 pub mod router;
 mod server;
 pub mod tree;

-// Python binding
+#[pyclass(eq)]
+#[derive(Clone, PartialEq)]
+pub enum PolicyType {
+    Random,
+    RoundRobin,
+    ApproxTree,
+}
+
 #[pyclass]
 struct Router {
    host: String,
    port: u16,
    worker_urls: Vec<String>,
-    policy: String,
+    policy: PolicyType,
+    tokenizer_path: Option<String>,
+    cache_threshold: Option<f32>,
 }

 #[pymethods]
 impl Router {
    #[new]
-    fn new(host: String, port: u16, worker_urls: Vec<String>, policy: String) -> Self {
-        Router {
+    #[pyo3(signature = (
+        worker_urls,
+        policy = PolicyType::RoundRobin,
+        host = String::from("127.0.0.1"),
+        port = 3001,
+        tokenizer_path = None,
+        cache_threshold = Some(0.50)
+    ))]
+    fn new(
+        worker_urls: Vec<String>,
+        policy: PolicyType,
+        host: String,
+        port: u16,
+        tokenizer_path: Option<String>,
+        cache_threshold: Option<f32>,
+    ) -> PyResult<Self> {
+        // Validate required parameters for approx_tree policy
+        if matches!(policy, PolicyType::ApproxTree) {
+            if tokenizer_path.is_none() {
+                return Err(PyErr::new::<pyo3::exceptions::PyValueError, _>(
+                    "tokenizer_path is required for approx_tree policy",
+                ));
+            }
+        }
+
+        Ok(Router {
            host,
            port,
            worker_urls,
            policy,
-        }
+            tokenizer_path,
+            cache_threshold,
+        })
    }

    fn start(&self) -> PyResult<()> {
        let host = self.host.clone();
        let port = self.port;
        let worker_urls = self.worker_urls.clone();
-        let policy = self.policy.clone();
+
+        let policy_config = match &self.policy {
+            PolicyType::Random => router::PolicyConfig::RandomConfig,
+            PolicyType::RoundRobin => router::PolicyConfig::RoundRobinConfig,
+            PolicyType::ApproxTree => router::PolicyConfig::ApproxTreeConfig {
+                tokenizer_path: self
+                    .tokenizer_path
+                    .clone()
+                    .expect("tokenizer_path is required for approx_tree policy"),
+                cache_threshold: self
+                    .cache_threshold
+                    .expect("cache_threshold is required for approx_tree policy"),
+            },
+        };

        actix_web::rt::System::new().block_on(async move {
-            server::startup(host, port, worker_urls, policy)
+            server::startup(host, port, worker_urls, policy_config)
                .await
                .unwrap();
        });
@@ -40,9 +89,9 @@ impl Router {
    }
 }

-// python usage: `from sglang_router import Router`
 #[pymodule]
 fn sglang_router(m: &Bound<'_, PyModule>) -> PyResult<()> {
+    m.add_class::<PolicyType>()?;
    m.add_class::<Router>()?;
    Ok(())
 }
--- a/rust/src/main.rs
+++ b/rust/src/main.rs
 // src/main.rs
-use clap::builder::PossibleValuesParser;
 use clap::Parser;
+use clap::ValueEnum;
 // declare child modules
 mod router;
 mod server;
 mod tree;

+use crate::router::PolicyConfig;
+
+#[derive(Debug, Clone, ValueEnum)]
+pub enum PolicyType {
+    Random,
+    RoundRobin,
+    ApproxTree,
+}
+
 #[derive(Parser, Debug)]
 #[command(author, version, about, long_about = None)]
 struct Args {
-    #[arg(long, default_value = "127.0.0.1")]
+    #[arg(
+        long,
+        default_value = "127.0.0.1",
+        help = "Host address to bind the server to"
+    )]
    host: String,

-    #[arg(long, default_value_t = 3001)]
+    #[arg(long, default_value_t = 3001, help = "Port number to listen on")]
    port: u16,

-    #[arg(long, value_delimiter = ',')]
+    #[arg(
+        long,
+        value_delimiter = ',',
+        help = "Comma-separated list of worker URLs to distribute requests to"
+    )]
    worker_urls: Vec<String>,

-    #[arg(long, default_value = "round_robin", value_parser = PossibleValuesParser::new(&["round_robin", "random"]))]
-    policy: String,
+    #[arg(
+        long,
+        default_value_t = PolicyType::RoundRobin,
+        value_enum,
+        help = "Load balancing policy to use: random, round_robin, or approx_tree"
+    )]
+    policy: PolicyType,
+
+    #[arg(
+        long,
+        requires = "policy",
+        required_if_eq("policy", "approx_tree"),
+        help = "Path to the tokenizer file, required when using approx_tree policy"
+    )]
+    tokenizer_path: Option<String>,
+
+    #[arg(
+        long,
+        default_value = "0.50",
+        requires = "policy",
+        required_if_eq("policy", "approx_tree"),
+        help = "Cache threshold (0.0-1.0) for approx_tree routing. Routes to cached worker if match rate exceeds threshold, otherwise routes to shortest queue worker"
+    )]
+    cache_threshold: Option<f32>,
+}
+
+impl Args {
+    fn get_policy_config(&self) -> PolicyConfig {
+        match self.policy {
+            PolicyType::Random => PolicyConfig::RandomConfig,
+            PolicyType::RoundRobin => PolicyConfig::RoundRobinConfig,
+            PolicyType::ApproxTree => PolicyConfig::ApproxTreeConfig {
+                tokenizer_path: self
+                    .tokenizer_path
+                    .clone()
+                    .expect("tokenizer_path is required for approx_tree policy"),
+                cache_threshold: self
+                    .cache_threshold
+                    .expect("cache_threshold is required for approx_tree policy"),
+            },
+        }
+    }
 }

 #[actix_web::main]
 async fn main() -> std::io::Result<()> {
    let args = Args::parse();
-    server::startup(args.host, args.port, args.worker_urls, args.policy).await
+    let policy_config = args.get_policy_config();
+    server::startup(args.host, args.port, args.worker_urls, policy_config).await
 }
--- a/rust/src/router.rs
+++ b/rust/src/router.rs
+use crate::tree::RadixTree;
 use actix_web::http::header::{HeaderValue, CONTENT_TYPE};
 use actix_web::{HttpRequest, HttpResponse};
 use bytes::Bytes;
 use futures_util::TryStreamExt;
+use std::collections::HashMap;
 use std::fmt::Debug;
+use std::sync::atomic::AtomicUsize;
+use std::sync::{Arc, Mutex};
+use tokenizers::tokenizer::Tokenizer;

 #[derive(Debug)]
 pub enum Router {
    RoundRobin {
        worker_urls: Vec<String>,
-        current_index: std::sync::atomic::AtomicUsize,
+        current_index: AtomicUsize,
    },
    Random {
        worker_urls: Vec<String>,
    },
+    ApproxTree {
+        worker_urls: Vec<String>,
+        // TODO: don't lock the whole tree
+        url_to_tree: Arc<Mutex<HashMap<String, RadixTree>>>,
+        tokenizer: Tokenizer,
+        url_to_count: Arc<Mutex<HashMap<String, usize>>>,
+        cache_threshold: f32,
+    },
+}
+
+pub enum PolicyConfig {
+    RandomConfig,
+    RoundRobinConfig,
+    ApproxTreeConfig {
+        tokenizer_path: String,
+        cache_threshold: f32,
+    },
+}
+
+fn get_token_ids_from_request(body: &Bytes, tokenizer: &Tokenizer) -> Vec<u32> {
+    // 1. convert body to json
+    let json = serde_json::from_slice::<serde_json::Value>(body).unwrap();
+    // 2. get the text field
+    let text = json.get("text").and_then(|t| t.as_str()).unwrap_or("");
+    // 3. tokenize the text field
+    let tokens = tokenizer.encode(text, false).unwrap();
+
+    tokens.get_ids().to_vec()
 }

 impl Router {
-    pub fn new(worker_urls: Vec<String>, policy: String) -> Self {
-        match policy.to_lowercase().as_str() {
-            "random" => Router::Random { worker_urls },
-            "round_robin" => Router::RoundRobin {
+    pub fn new(worker_urls: Vec<String>, policy_config: PolicyConfig) -> Self {
+        match policy_config {
+            PolicyConfig::RandomConfig => Router::Random { worker_urls },
+            PolicyConfig::RoundRobinConfig => Router::RoundRobin {
                worker_urls,
                current_index: std::sync::atomic::AtomicUsize::new(0),
            },
-            _ => panic!(
-                "Unknown routing policy: {}. The available policies are 'random' and 'round_robin'",
-                policy
-            ),
+            PolicyConfig::ApproxTreeConfig {
+                tokenizer_path,
+                cache_threshold,
+            } => {
+                let mut url_to_tree = HashMap::new();
+                let mut url_to_count = HashMap::new();
+
+                for url in &worker_urls {
+                    url_to_tree.insert(url.clone(), RadixTree::new());
+                    url_to_count.insert(url.clone(), 0);
+                }
+
+                Router::ApproxTree {
+                    worker_urls,
+                    url_to_tree: Arc::new(Mutex::new(url_to_tree)),
+                    // TODO: rust ::from_pretrained cannot load from local file, so use ::from_file to load local file
+                    tokenizer: Tokenizer::from_file(tokenizer_path).unwrap(),
+                    url_to_count: Arc::new(Mutex::new(url_to_count)),
+                    cache_threshold,
+                }
+            }
        }
    }

    pub fn get_first(&self) -> Option<String> {
        match self {
-            Router::RoundRobin { worker_urls, .. } | Router::Random { worker_urls } => {
+            Router::RoundRobin { worker_urls, .. }
+            | Router::Random { worker_urls }
+            | Router::ApproxTree { worker_urls, .. } => {
                if worker_urls.is_empty() {
                    None
                } else {
@@ -48,26 +100,96 @@ impl Router {
        req: HttpRequest,
        body: Bytes,
    ) -> HttpResponse {
+        let mut input_ids: Vec<u32> = Vec::new();
+        if let Router::ApproxTree { tokenizer, .. } = self {
+            input_ids = get_token_ids_from_request(&body, tokenizer);
+        }
+
        let worker_url = match self {
            Router::RoundRobin {
                worker_urls,
                current_index,
            } => {
-                current_index
+                let idx = current_index
                    .fetch_update(
                        std::sync::atomic::Ordering::SeqCst,
                        std::sync::atomic::Ordering::SeqCst,
                        |x| Some((x + 1) % worker_urls.len()),
                    )
-                    .expect_err("Error updating index in round robin");
+                    .unwrap();

-                &worker_urls[current_index.load(std::sync::atomic::Ordering::SeqCst)]
+                worker_urls[idx].clone()
            }
+
            Router::Random { worker_urls } => {
-                &worker_urls[rand::random::<usize>() % worker_urls.len()]
+                worker_urls[rand::random::<usize>() % worker_urls.len()].clone()
+            }
+
+            Router::ApproxTree {
+                worker_urls,
+                url_to_tree,
+                url_to_count,
+                cache_threshold,
+                ..
+            } => {
+                // TODO: pipeline the locks. Release one earlier.
+
+                let mut max_matched_rate = 0.0;
+                let mut max_matched_idx = 0;
+
+                let locked_url_to_tree = url_to_tree.lock().unwrap();
+
+                // 1. Find the highest matched worker
+                for (i, url) in worker_urls.iter().enumerate() {
+                    let tree = locked_url_to_tree.get(url).unwrap();
+                    let matched = tree.prefix_match(&input_ids[..]).len();
+                    let matched_rate = matched as f32 / input_ids.len() as f32;
+
+                    if matched_rate > max_matched_rate {
+                        max_matched_rate = matched_rate;
+                        max_matched_idx = i;
+                    }
+                }
+
+                // 2. If the rate is higher than the threshold, select the worker. If not, select the worker with the shortest queue
+                if max_matched_rate > *cache_threshold {
+                    worker_urls[max_matched_idx].clone()
+                } else {
+                    // pick the shortest queue from url_to_count
+                    let locked_url_to_count = url_to_count.lock().unwrap();
+
+                    let mut min_count = std::usize::MAX;
+                    let mut min_count_id = 0;
+
+                    for (i, url) in worker_urls.iter().enumerate() {
+                        let count = locked_url_to_count.get(url).unwrap();
+                        if *count < min_count {
+                            min_count = *count;
+                            min_count_id = i;
+                        }
+                    }
+
+                    worker_urls[min_count_id].clone()
+                }
            }
        };

+        if let Router::ApproxTree {
+            url_to_tree,
+            url_to_count,
+            ..
+        } = self
+        {
+            // Insert input_ids to the tree
+            let mut locked_url_to_tree = url_to_tree.lock().unwrap();
+            let selected_tree = locked_url_to_tree.get_mut(&worker_url).unwrap();
+            selected_tree.insert(&input_ids[..]);
+
+            let mut locked_url_to_count = url_to_count.lock().unwrap();
+            let count = locked_url_to_count.get_mut(&worker_url).unwrap();
+            *count += 1;
+        }
+
        // Check if client requested streaming
        let is_stream = serde_json::from_slice::<serde_json::Value>(&body)
            .map(|v| v.get("stream").and_then(|s| s.as_bool()).unwrap_or(false))
@@ -94,11 +216,19 @@ impl Router {
            .unwrap_or(actix_web::http::StatusCode::INTERNAL_SERVER_ERROR);

        if !is_stream {
+            // TODO: do the correction on the tree based on the cached input_ids
+            if let Router::ApproxTree { url_to_count, .. } = self {
+                let mut locked_url_to_count = url_to_count.lock().unwrap();
+                let count = locked_url_to_count.get_mut(&worker_url).unwrap();
+                *count -= 1;
+            }
+
            match res.bytes().await {
                Ok(body) => HttpResponse::build(status).body(body.to_vec()),
                Err(_) => HttpResponse::InternalServerError().finish(),
            }
        } else {
+            // TODO: do the correction on the tree based on the cached input_ids. The streaming might be tricker to handle
            HttpResponse::build(status)
                .insert_header((CONTENT_TYPE, HeaderValue::from_static("text/event-stream")))
                .streaming(res.bytes_stream().map_err(|_| {

--- a/rust/src/server.rs
+++ b/rust/src/server.rs
+use crate::router::PolicyConfig;
 use crate::router::Router;
 use actix_web::{get, post, web, App, HttpRequest, HttpResponse, HttpServer, Responder};
 use bytes::Bytes;
@@ -9,9 +10,13 @@ pub struct AppState {
 }

 impl AppState {
-    pub fn new(worker_urls: Vec<String>, policy: String, client: reqwest::Client) -> Self {
+    pub fn new(
+        worker_urls: Vec<String>,
+        client: reqwest::Client,
+        policy_config: PolicyConfig,
+    ) -> Self {
        // Create router based on policy
-        let router = Router::new(worker_urls, policy);
+        let router = Router::new(worker_urls, policy_config);

        Self { router, client }
    }
@@ -40,7 +45,6 @@ async fn forward_request(

 #[get("/v1/models")]
 async fn v1_model(data: web::Data<AppState>) -> impl Responder {
-    // TODO: extract forward_to_route
    let worker_url = match data.router.get_first() {
        Some(url) => url,
        None => return HttpResponse::InternalServerError().finish(),
@@ -59,7 +63,6 @@ async fn get_model_info(data: web::Data<AppState>) -> impl Responder {
    forward_request(&data.client, worker_url, "/get_model_info".to_string()).await
 }

-// no deser and ser, just forward and return
 #[post("/generate")]
 async fn generate(req: HttpRequest, body: Bytes, data: web::Data<AppState>) -> impl Responder {
    data.router.dispatch(&data.client, req, body).await
@@ -69,7 +72,7 @@ pub async fn startup(
    host: String,
    port: u16,
    worker_urls: Vec<String>,
-    routing_policy: String,
+    policy_config: PolicyConfig,
 ) -> std::io::Result<()> {
    println!("Starting server on {}:{}", host, port);
    println!("Worker URLs: {:?}", worker_urls);
@@ -80,7 +83,7 @@ pub async fn startup(
        .expect("Failed to create HTTP client");

    // Store both worker_urls and client in AppState
-    let app_state = web::Data::new(AppState::new(worker_urls, routing_policy, client));
+    let app_state = web::Data::new(AppState::new(worker_urls, client, policy_config));

    HttpServer::new(move || {
        App::new()

--- a/rust/src/tree.rs
+++ b/rust/src/tree.rs
 use std::collections::HashMap;
 use std::mem;

-#[derive(Clone)]
+#[derive(Debug)]
 pub struct Node {
-    pub children: HashMap<usize, Node>, // the key is first id of the child because each child must have unique first id
-    pub ids: Vec<usize>,
-    pub count: usize,
+    pub children: HashMap<u32, Node>, // the key is first id of the child because each child must have unique first id
+    pub ids: Vec<u32>,
+    pub count: u32,
 }

+#[derive(Debug)]
 pub struct RadixTree {
    pub root: Node,
 }

-fn common_prefix_len(a: &[usize], b: &[usize]) -> usize {
+fn common_prefix_len(a: &[u32], b: &[u32]) -> usize {
    let mut i = 0;
    while i < a.len() && i < b.len() && a[i] == b[i] {
        i += 1;
@@ -37,7 +38,7 @@ impl RadixTree {
        }
    }

-    pub fn insert(&mut self, input_ids: &[usize]) {
+    pub fn insert(&mut self, input_ids: &[u32]) {
        let mut curr = &mut self.root;
        curr.count += 1;

@@ -93,7 +94,7 @@ impl RadixTree {
        }
    }

-    pub fn prefix_match<'a>(&self, input_ids: &'a [usize]) -> &'a [usize] {
+    pub fn prefix_match<'a>(&self, input_ids: &'a [u32]) -> &'a [u32] {
        let mut curr = &self.root;

        let mut curr_idx = 0;
@@ -121,7 +122,7 @@ impl RadixTree {
        &input_ids[..curr_idx]
    }

-    pub fn delete(&mut self, input_ids: &[usize]) {
+    pub fn delete(&mut self, input_ids: &[u32]) {
        let mut curr = &mut self.root;
        curr.count -= 1;


--- a/rust/tests/test_tree.rs
+++ b/rust/tests/test_tree.rs
@@ -67,7 +67,7 @@ fn test_prefix_match_partial() {
 fn test_prefix_match_no_match() {
    let mut tree = RadixTree::new();
    tree.insert(&[1, 2, 3, 4]);
-    let empty_slices: &[usize] = &[];
+    let empty_slices: &[u32] = &[];
    assert_eq!(tree.prefix_match(&[5, 6, 7]), empty_slices);
 }

@@ -124,7 +124,7 @@ fn test_delete_nonexistent() {
 #[test]
 fn test_empty_input() {
    let mut tree = RadixTree::new();
-    let empty_slice: &[usize] = &[];
+    let empty_slice: &[u32] = &[];
    tree.insert(empty_slice);
    assert_eq!(tree.prefix_match(empty_slice), empty_slice);
    tree.delete(empty_slice); // Should not panic