[MySQL] database optimization method

In database tuning , Our goal is to respond faster , More throughput . Using macro monitoring tools and micro log analysis can help us quickly find tuning ideas and methods .

Database server optimization steps

When we encounter database tuning problems , How to think ？ Here, the thinking process is organized into the following figure .
The whole process is divided into Observe （Show status） and action （Action） Two parts . Letter S Part of represents observation （ Can make Use corresponding analysis tools ）, Letter A The representative part is action （ Actions that can be taken by correspondence analysis ）.

Statistics SQL The cost of searching

stay MySQL in , have access to SHOW STATUS Statement query some MySQL Database server's performance parameter 、 Frequency of execution .
SHOW STATUS The sentence syntax is as follows ：

Location execution is slow SQL： Slow opening SQL Query log

see SQL Execution cost

Analysis query tool -explain