Discover what is the role of slow SQL in RDS background "performance optimization"
https://help.aliyun.com/knowledge_detail/5974897.html?spm=5176.788314905.2.6.XIEPo4
------------------------------------------------------------------------------------------------------------
The performance optimization records the details of the slow log. The slow log is the SQL statement that records the execution time in the database for more than 1 second ( you can modify the long_query_time parameter in the console parameter setting by yourself ) . The poor execution efficiency of these statements will affect the performance of the database, so Users can optimize the code to improve execution efficiency based on these slow SQL records.
------------------------------------------------------------------------------------------------------------