docs(server): Add a doc of Scheduling Between Multiple Services

docs/en_US/02.start_server.md

@@ -23,7 +23,6 @@ The service endpoint is: `/v1/local/video/generate`
 
 The `message` parameter in `scripts/post.py` is as follows:
 
-
 ```python
 message = {
     "task_id": generate_task_id(),
@@ -68,3 +67,14 @@ python scripts/stop_running_task.py
 The service endpoint is: `/v1/local/video/generate/stop_running_task`
 
 After terminating the task, the server will not exit but will return to waiting for new requests.
+
+
+### Scheduling Between Multiple Services
+
+You can start multiple services using `scripts/start_server.sh`. Note that the port numbers under the same IP must be different for each service.
+
+```shell
+python scripts/post_multi_servers.py
+```
+
+`post_multi_servers.py` will schedule client requests according to the status of the services.

docs/zh_CN/02.start_server.md

@@ -67,3 +67,14 @@ python scripts/stop_running_task.py
 服务的接口是：`/v1/local/video/generate/stop_running_task`
 
 终止了任务之后，服务端并不会退出服务，而是回到等待接收新请求的状态。
+
+
+### 多个服务之间的调度
+
+可以通过`scripts/start_server.sh`起多个服务，注意同一个ip下的端口号，不同服务之间要保持不同。
+
+```shell
+python scripts/post_multi_servers.py
+```
+
+`post_multi_servers.py`会根据服务的空闲状态，进行调度客户端发起的请求。