Merge branch 'kvcache-ai:main' into main

csrc/balance_serve/kvc2/test/xxHash_test.cpp

+#include "xxhash.h"
+#include <iostream>
+
+int main() {
+  std::string t = "hello world";
+  XXH64_hash_t hash = XXH64(t.data(), t.size(), 123);
+  std::cout << hash << std::endl;
+  {
+    /* create a hash state */
+    XXH64_state_t* const state = XXH64_createState();
+    if (state == NULL)
+      abort();
+
+    if (XXH64_reset(state, 123) == XXH_ERROR)
+      abort();
+
+    if (XXH64_update(state, t.data(), 5) == XXH_ERROR)
+      abort();
+
+    if (XXH64_update(state, t.data() + 5, t.size() - 5) == XXH_ERROR)
+      abort();
+    /* Produce the final hash value */
+    XXH64_hash_t const hash = XXH64_digest(state);
+
+    /* State could be re-used; but in this example, it is simply freed  */
+    XXH64_freeState(state);
+    std::cout << hash << std::endl;
+  }
+
+  return 0;
+}