Shulou(Shulou.com)05/31 Report--

Editor to share with you what is the use of slowlog in Redis, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Slowlog is a logging system used by Redis to record the execution time of queries. Note that the query execution time refers to the time it takes to execute a query command, excluding IO operations such as client response (talking) and sending a reply.

Slowlog is stored in memory and is very fast to read and write, so we can safely use it without worrying about harming the speed of Redis by turning on slowlog.

There are two important configurations for slowlog. Let's first look at the existing configuration through the CONFIG GET slowlog-* command.

Slowlog-log-slower-than represents the threshold of slow query in microseconds. When the time taken to execute a query command is greater than the configured threshold, the command is logged to the slow query log. When slowlog-log-slower-than=0, record all commands. Slowlog-log-slower-than

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