MyCATApache/Mycat-Server

偶发缓冲队列过大如何优化

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#2,861 opened on Oct 9, 2021

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Description

应用层显示调用mycat耗时20s,但是mysql监控无慢sql，sql本身走索引了，直接在数据库查询都是毫秒级别返回。 通过mycat-eye监控显示，mycat请求耗时过长的时间点与“Mycat缓冲队列分析”出现峰值的时间点比较吻合。达到100k, 平时都是0 怀疑是队列导致查询总耗时时间过长。这种情况应该如何优化呢。版本是1.67

Contributor guide

Research direction
Investigate the configuration and monitoring of Mycat's buffer queue; check for bottlenecks in the queue processing logic and consider tuning queue size or optimizing the consumer thread pool.
Tech stack
java
Domain
database
Issue type
Performance
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Needs maintainer response
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Needs investigation
Prerequisites
JavaMycat architecture
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30