Java多线程与多线程的关系

Question

I have a service that gets requests from many clients and after some processing sends a response to the clients. I use a ThreadPoolExecutor (threadExecuterClient) to handle client requests and put them in a BlockingQueue (requestQueue). Many clients can send concurrent requests. I have another ThreadPoolExecutor (threadExecuterServer) that processes requests in requestQueue. This processing is basically consists of send that request to a server and get response. After processing, I need to send that response to the client which has made that request. I am having difficulties to track which client has made which request. I basically need to find a way to map the client request to the result of processing. The service will be like a gateway.

Any idea to handle this issue is appreciated.

Thanks

Answer 1

I assume your service accepts requests via HTTP ? Accept the request from your service and send back a HTTP 202 response. This response means that the request was accepted for processing. When you send the response, send the Location header to tell the client which URL to invoke to ascertain the status of your request. The client can poll this URL for status and a result.

The URL should contain a unique ID for each request. Your server can track that and populate a response when it is ready.