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This commit is contained in:
Ilkka Seppälä
2024-06-08 19:54:44 +03:00
committed by GitHub
parent cb946c0cdc
commit 6cd2d0353a
219 changed files with 3308 additions and 2819 deletions
+18 -16
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@@ -1,25 +1,27 @@
---
title: Object Pool
title: "Object Pool Pattern in Java: Enhancing Performance with Reusable Object Management"
shortTitle: Object Pool
description: "Learn how the Object Pool design pattern improves performance by reusing expensive objects efficiently. Explore examples, benefits, and best practices in Java."
category: Creational
language: en
tag:
- Game programming
- Instantiation
- Memory management
- Performance
- Resource management
- Scalability
- Game programming
- Instantiation
- Memory management
- Performance
- Resource management
- Scalability
---
## Also known as
* Resource Pool
## Intent
## Intent of Object Pool Design Pattern
The Object Pool design pattern manages a pool of reusable objects, optimizing resource use by recycling objects rather than creating and destroying them repeatedly.
The Object Pool design pattern in Java manages a pool of reusable objects, optimizing memory management and application performance by recycling objects rather than creating and destroying them repeatedly.
## Explanation
## Detailed Explanation of Object Pool Pattern with Real-World Examples
Real-world example
@@ -33,7 +35,7 @@ Wikipedia says
> The object pool pattern is a software creational design pattern that uses a set of initialized objects kept ready to use a "pool" rather than allocating and destroying them on demand.
**Programmatic Example**
## Programmatic Example of Object Pool Pattern in Java
In our war game we need to use oliphaunts, massive and mythic beasts, but the problem is that they are extremely expensive to create. The solution is to create a pool of them, track which ones are in-use, and instead of disposing them re-use the instances.
@@ -149,7 +151,7 @@ Program output:
21:21:58.147 [main] INFO com.iluwatar.object.pool.App -- Pool available=0 inUse=3
```
## Applicability
## When to Use the Object Pool Pattern in Java
Use the Object Pool pattern when
@@ -158,14 +160,14 @@ Use the Object Pool pattern when
* A fixed number of objects need to be controlled, like in connection pooling.
* Object reuse can significantly improve system performance and resource management.
## Known Uses
## Real-World Applications of Object Mother Pattern in Java
* Database connection pooling in Java applications.
* Thread pooling in Java concurrent programming.
* Pooling of socket connections in network applications.
* Object pools in game development for frequently created and destroyed game objects.
## Consequences
## Benefits and Trade-offs of Object Pool Pattern
Benefits:
@@ -179,13 +181,13 @@ Trade-offs:
* Thread Safety: Requires careful handling of concurrent access to the pool, introducing potential synchronization issues.
* Initialization Cost: Initial creation of the pool can be resource-intensive.
## Related Patterns
## Related Java Design Patterns
* [Singleton](https://java-design-patterns.com/patterns/singleton/): Ensures a single instance of the pool is used, providing a global point of access.
* [Flyweight](https://java-design-patterns.com/patterns/flyweight/): Shares fine-grained objects to reduce memory usage, complementing object pooling by managing object state efficiently.
* [Factory Method](https://java-design-patterns.com/patterns/factory-method/): Often used to create objects within the pool, abstracting the instantiation process.
## Credits
## References and Credits
* [Design Patterns: Elements of Reusable Object-Oriented Software](https://amzn.to/3w0pvKI)
* [Effective Java](https://amzn.to/4cGk2Jz)