Introduction
If you've ever worked with databases, you have probably encountered some queries that seem to take longer to execute than they should. Queries can become slow for various reasons ranging from improper index usage to bugs in the storage engine itself. However, in most cases, queries become slow because developers or MySQL database administrators neglect to monitor them and keep an eye on their performance. In this article, we will figure out how to avoid that.
What Is a Query?
To understand what makes queries slow and improve their performance, we have to start from the very bottom. First, we have to understand what a query fundamentally is–a simple question, huh? However, many developers and even very experienced database administrators could fail to answer.