feat:实现正则表达式编译缓存功能

[ban-xiu]

-使用项目中已有的LRUCache支持正则表达式编译缓存

[ban-xiu]

hi, @hengyunabc PTAL

[Copilot]

Pull request overview

This PR implements a regex compilation cache feature to improve performance by avoiding repeated compilation of the same regular expressions. The implementation leverages the existing LRUCache class to cache compiled Pattern objects with a maximum capacity of 100 entries.

Key changes:

• Added RegexCacheManager singleton class to manage cached Pattern objects using LRUCache
• Modified RegexMatcher to use cached Pattern objects from RegexCacheManager instead of compiling on each use
• Added comprehensive unit tests for the caching functionality including basic operations, LRU eviction, and cache clearing

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 5 comments.

File	Description
core/src/main/java/com/taobao/arthas/core/util/RegexCacheManager.java	New singleton class implementing regex pattern caching with LRU eviction strategy, providing thread-safe pattern compilation and caching
core/src/main/java/com/taobao/arthas/core/util/matcher/RegexMatcher.java	Refactored to use RegexCacheManager for pattern caching, changing from String.matches() to cached Pattern.matcher().matches()
core/src/test/java/com/taobao/arthas/core/util/RegexCacheManagerTest.java	Comprehensive test suite covering cache operations, LRU eviction behavior, and edge cases like null/empty patterns

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[ban-xiu]

已按建议修复

[hengyunabc]

感觉 正则的使用也不多。什么情况下会有性能瓶颈？

[ban-xiu]

某些复杂的正则表达式（如包含大量回溯的模式）匹配过程本身就很慢

[ban-xiu]

在某些场景需要重复多次中断再重新使用正则表达式方法

[ban-xiu]

例如，在我的场景下常用到的trace <复杂正则表达式> -n 1，这样性能有很好提升

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

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[ban-xiu]

已修复

[hengyunabc]

已经合并了。

[ban-xiu]

@hengyunabc 老师请帮忙看看这个吧 bytekit/pull/47