Share some optimization tips for MySQL database

This article will share with you some tips on MySQL database optimization. I hope it will be helpful to friends who are learning MySQL!

Share some MySQL database optimization tips

1. Turn on the query cache and optimize the query.

2. Explain your select query, which can help you analyze the performance bottleneck of your query statement or table structure. EXPLAIN query results will also tell you how your index primary keys are used and how your data tables are searched and sorted.

3. Use limit 1 when there is only one row of data. The MySQL database engine will stop searching after finding a piece of data, instead of continuing to search for the next data that matches the record.

4. Create an index for the search field. (Free learning video tutorial recommendation: mysql video tutorial)

5. Use ENUM instead of VARCHAR. If you have a field, such as "gender", "status" or "department", and you know that the values ​​of these fields are limited and fixed, then you should use ENUM instead of VARCHAR.

6. Prepared Statements, prepared statements are much like stored procedures. They are a collection of SQL statements running in the background. We can get many benefits from using prepared statements, whether it is performance issues or security issues. Prepared Statements can check some variables that you have bound, which can protect your program from "SQL injection" attacks.

7. Vertical table partitioning;

8. Select an appropriate storage engine based on business needs.

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