[poc]poc config flow concurrent safety#269
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chuailiwu wants to merge 2 commits intopolarismesh:mainfrom
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[poc]poc config flow concurrent safety#269chuailiwu wants to merge 2 commits intopolarismesh:mainfrom
chuailiwu wants to merge 2 commits intopolarismesh:mainfrom
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配置中心并发安全优化方案详细说明了以下关键特性：
多级锁策略
分段锁机制：16个分段锁，基于cacheKey哈希分片，支持不同文件的并行操作
全局锁保护：保护需要全局遍历的操作（如长轮询配置组装）
sync.Map缓存：内置并发安全的缓存结构，避免传统map的锁管理复杂性
性能优化技术
双重检查锁：减少锁竞争，提升读取性能
读写锁分离：支持多读单写，提高并发吞吐量
长轮询管理
单次启动机制：确保长轮询任务只初始化一次
版本号控制：保证配置变更的实时性和数据一致性