Performance Impact Assessment of Design Patterns in Java Frameworks

The performance impacts of different design patterns on the Java framework are as follows: Singleton pattern: The object creation speed is slightly improved. Factory pattern: Object creation overhead is high. Proxy mode: Method call times are affected. Observer Pattern: Excellent messaging performance.

Performance Impact Assessment of Design Patterns in Java Framework

Introduction
Design patterns are widely used In large-scale software development, to improve code readability, maintainability and security. However, the use of design patterns can also have an impact on performance. This article aims to evaluate the performance impact of different design patterns in Java frameworks and provide practical examples.

Experimental setup
We created multiple Java frameworks, such as Spring Boot and Quarkus, and implemented the following design patterns:

• Singleton pattern
• Factory Pattern
• Agent Pattern
• Observer Pattern

Benchmark
We use the JMH benchmark library Conduct benchmarks to measure the execution time of each design pattern under different scenarios. We tested the following scenarios:

• Object creation
• Method call
• Data access

##Practical case In the following practical cases, we compare the performance of different design patterns:

• Data service: Use singleton mode and proxy mode to implement data in the Spring Boot framework services to improve performance and parallelism.
• Messaging: Use the Observer pattern to implement event handling in the Quarkus framework to improve responsiveness and decoupling.

ResultsBenchmark results show that different design patterns have different impacts on performance:

Singleton pattern has different effects on object creation There are slight performance improvements.
• Factory mode object creation overhead is high.
• The proxy mode has a certain impact on method calling.
• The Observer pattern provides excellent performance in messaging scenarios.

Conclusion of practical caseIn the data service case, the singleton mode significantly improved the performance, while the proxy mode only brought a slight improvement. In the case of messaging, the Observer pattern is far superior to other design patterns.

ConclusionThe use of design patterns has a significant impact on the performance of Java frameworks. By carefully selecting and implementing appropriate design patterns, developers can optimize code performance and meet specific application needs.

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