nsqio/nsq

nsqd: refresh the address of nsqlookupd on DNS changes

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#1,233 创建于 2020年1月14日

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 (4 评论) (0 反应) (0 负责人)Go (25,788 star) (2,898 fork)batch import
featurehelp wanted

描述

right now an nsqd client doesn't refresh it's ip connections to lookupd on lookupd DNS changes. this causes a problem on long running instances when a lookupd instance gets rebuilt.

贡献者指南

技术栈
go
领域
backendinfrastructure
议题类型
bug
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
Go programmingDNS resolution conceptsNSQ architecture
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。
40
研究方向
Investigate how nsqd currently resolves and caches nsqlookupd addresses. Look at the connection initialization and periodic refresh mechanisms in the nsqd source code, likely in files like nsqd.go or lookups.go. Check if there is any DNS resolution caching or TTL handling. The fix may involve implementing a periodic DNS lookup or subscribing to OS level DNS change notifications.
nsqd: refresh the address of nsqlookupd on DNS changes · nsqio/nsq#1233 | Good First Issue