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layout pattern
title Object Pool
folder object-pool
permalink /patterns/object-pool/
categories Creational
tags
Java
Difficulty-Beginner
Performance

Intent: When objects are expensive to create and they are needed only for short periods of time it is advantageous to utilize the Object Pool pattern. The Object Pool provides a cache for instantiated objects tracking which ones are in use and which are available.

alt text

Applicability: Use the Object Pool pattern when

  • the objects are expensive to create (allocation cost)
  • you need a large number of short-lived objects (memory fragmentation)