Editing Thread pool (section)

{{Short description|Software design pattern}}
[[File:Thread pool.svg|thumb|400px|A sample thread pool (green boxes) with waiting tasks (blue) and completed tasks (yellow)]]

In [[computer programming]], a '''thread pool''' is a [[software design pattern]] for achieving [[Concurrency (computer science)|concurrency]] of execution in a computer program. Often also called a '''replicated workers''' or '''worker-crew model''',<ref>Garg, Rajat P. & Sharapov, Ilya ''Techniques for Optimizing Applications - High Performance Computing'' Prentice-Hall 2002, p. 394</ref> a thread pool maintains multiple [[thread (computer science)|threads]] waiting for [[task (computers)|tasks]] to be allocated for [[concurrent computing|concurrent]] execution by the supervising program. By maintaining a pool of threads, the model increases performance and avoids latency in execution due to frequent creation and destruction of threads for short-lived tasks.<ref>{{Cite book |first=Allen |last=Holub |authorlink=Allen Holub |title=Taming Java Threads |publisher=Apress |year=2000 |page=209}}</ref> Another good property - the ability to limit system load, when we use fewer threads than available. The number of available threads is tuned to the computing resources available to the program, such as a parallel  task queue after completion of execution.