title: http request and thread pool
body: <p>I have this problem. In order to create a response for a single http request, I have to do several tasks that can be performed concurrently. I can perform those tasks in a Executor (thread pool) but then I have to worry about concurrency (synchronization) in my web app. Is there a better way to solve this problem without using thread pool?</p>
  
  <p>Thanks,</p>