27 lines
803 B
Markdown
27 lines
803 B
Markdown
---
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layout: pattern
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title: Object Pool
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folder: object-pool
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permalink: /patterns/object-pool/
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pumlid: JSV94SCm2030Lk829Fxf1cF6bWU1XYDkFtdcjxiD9Qc3o-LrPQvu0pW-_HnvrLx1JgR9cfrimf1wCD7XnW-sWsESsXPcicl0nFW1RB-PiYqp0KxwVo-VVTMKBm00
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categories: Creational
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tags:
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- Java
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- Difficulty-Beginner
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- Performance
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---
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## Intent
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When objects are expensive to create and they are needed only for
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short periods of time it is advantageous to utilize the Object Pool pattern.
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The Object Pool provides a cache for instantiated objects tracking which ones
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are in use and which are available.
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## Applicability
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Use the Object Pool pattern when
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* the objects are expensive to create (allocation cost)
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* you need a large number of short-lived objects (memory fragmentation)
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