This plugin, however, seems to be running garbage collection all the time (many times per minute when under traffic). This would usually not be a problem, because it would be sufficient to do this job once in a while as a background task. From the query analysis we can read that the query spends 2.455565 seconds. In this example a logging plugin for WordPress does garbage collection (which is good) by deleting old activity log records. Example 1: Speeding up a delete query with a range condition This should help you learn how to identify and fix the missing database indexes issue. Examplesīecause this sort of issue comes in many flavors, we’ll be adding examples to this page as we discover them. The slow log can usually be found in /var/log/ on UNIX systems, or if you’re using shared or managed hosting services, you can ask support for a copy. Slow database queries are logged to the, along with an analysis of the database query that can provide valuable additional information. So how can you figure out if missing database indexes is a problem on your website? If the database can make use of database indexes while querying the data, the database size is almost irrelevant.Įither way, lacking use of indexes is the most common cause for degraded database performance. It is a common misconception that an increasing database size also will make it slower. Relational databases, like MariaDB and MySQL, are used to store data in a structured way, which allows use to use SQL (Structured Query Language) to work with the data.
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