alibaba/Sentinel

Replace deprecated concurrentlinkedhashmap-lru with Caffeine in param-flow-extension

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#2,871 创建于 2022年9月8日

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 (4 评论) (0 反应) (0 负责人)Java (23,109 star) (8,150 fork)batch import
good first issuekind/enhancement

描述

Issue Description

Type: bug report or feature request

Describe what happened (or what feature you want)

concurrentlinkedhashmap-lru 已经很老了，没有维护。

Describe what you expected to happen

是不是可以考虑下使用Caffeine 替换。

Caffeine is the Java 8 successor to ConcurrentLinkedHashMap and Guava's cache. Projects should prefer Caffeine and migrate when requiring JDK8 or higher. The previous caching projects are supported in maintenance mode.

How to reproduce it (as minimally and precisely as possible)

Tell us your environment

Anything else we need to know?

贡献者指南

技术栈
java
领域
backend
议题类型
refactor
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
mostly clear
前置要求
Java 8Maven buildBasic knowledge of caching
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
70
研究方向
Locate the param flow extension module in the Sentinel repository. Replace all usages of `ConcurrentLinkedHashMap` and related classes from the concurrentlinkedhashmap lru library with Caffeine's `Caffeine` and `Cache` classes. Ensure that the caching behavior (e.g., eviction policies) remains equivalent. Review existing tests to verify functionality. No linked PRs or specific files are mentioned; you may need to explore the module's structure.