Question

I need an executor service to invoke a 3rd party service, to save from rtt and latency, planning to fire all the 3rd party request concurrently.

I would like to know if I should create an ExecutorService per request ? or store at thread local? or one per application?

What happens if i never call shutdown explicitly?

Thanks.

Answer 1

Most likely you want to have a single ExecutorService per whole application. It’s actually a thread pool in disguise, so you probably don’t need a thread pool per one request or per thread.

Calling shutdown() is not necessary, but if this runs within a web application that you plan to redeploy, it will lead to memory leak.