alibaba/Sentinel

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

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#2,871 建立於 2022年9月8日

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 (4 留言) (0 反應) (0 負責人)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?

貢獻者指南

技術棧
java
領域
backend
議題類型
refactor
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-3 hours
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
mostly clear
前置要求
Java 8Maven buildBasic knowledge of caching
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
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.