如何对executorservice进行链接(how to strand executorservice)

 我的程序流程是这样的： 
 我需要按用户的请求进行顺序处理 
 在C ++中，我将使用boost asio和每个用户一个链，但我必须在java中编码 
 所以我打算为每个用户创建一个SingleThreadExecutor并将用户的任务发布到它的执行者中 
 但是如果用户数量增加，我认为这种方法会因为大量的线程而变慢 
 所以我在寻找替代解决方案，我脑子里的另一种方法是每个用户一个队列，以及一些如何排队到固定线程池，需要在这里提出建议，谢谢。 

My program flow is like this:
 I need to sequential processing per user's request
 In C++ I will use boost asio and one strand per user but I had to code in java
 So I intend to create one SingleThreadExecutor per user and post user's task into it's executor 
 But if user num get big I think this approach will slow because of the big number of thread
 So I looking for alternative solution, the other approach in my head is one queue per user and some how tosh that queue to a fixed thread pool, need advise here, thanks.

原文：https://stackoverflow.com/questions/11178962