Shutdown ExecutorService gracefully in webapp?

Question

In my webapp, I created a service that is using an ExecutorService with fixed size ThreadPool. I reuse the same ExecutorService during the whole ap

Answer 1

In addition to what Tomasz suggested you can also use CachedThreadPool

Threads that have not been used for sixty seconds are terminated and removed from the cache. Thus, a pool that remains idle for long enough will not consume any resources

So a very good solution would be use CachedThreadPool and shutdown it in ServletContextListener.contextDestroyed().