title: How to code concurrency (creating threads) on Application server?
body: <p>I know there are some sources in the web for this topic, but it is confusing me that every application server seems to have its own measurement of how to handle concurrency and offering there own thread pools.</p>
  
  <p>Is it a No-Go to create Threads on it's own on an application server? (e.g. new Thread()...) 
  If yes, does there a common approach exist independently of the used application server?</p>