How to optimize MySQL database performance?

To optimize the performance of a MySQL database, you can try the following methods:

1. Optimize the database indexes: adding indexes to frequently queried columns can speed up the queries.
2. Optimize database query statements by avoiding using SELECT * and only selecting the necessary columns, avoiding the use of SELECT DISTINCT and subqueries.
3. Avoid using large queries: Try to reduce situations where a large amount of data is queried at once, and consider paging the query results instead.
4. Optimize the database table structure by minimizing the use of excessive join tables, designing table structure sensibly, and avoiding storing data in large character fields.
5. Cache query results: Utilizing a caching mechanism can help reduce the burden on the database by storing query results.
6. Regularly clean the database by removing unnecessary data to optimize storage space.
7. Choose the appropriate storage engine based on your needs, such as InnoDB or MyISAM.
8. Using a database connection pool can reduce the overhead of connecting to a database and improve database performance.
9. Regularly optimize the database: Perform regular optimization operations on the database, such as optimizing table structures and query statements.

By utilizing the various methods mentioned above, it is possible to effectively optimize the performance of MySQL databases, increasing their response speed and stability.