MySQL connection is reset. How to improve connection pool utilization through connection reuse?

The MySQL connection is reset. How to improve the utilization of the connection pool through connection reuse?

Establishing a connection between an application and a MySQL database is a very common operation. However, establishing and closing connections each time requires a certain amount of resources, and frequent connection establishment and closing will have a negative impact on database performance. In order to improve connection utilization, many applications use connection pooling technology. Connection pooling can avoid frequent connection establishment and closing operations, thereby improving application and database performance.

However, in the process of using the connection pool, we often encounter the problem of MySQL connection being reset. When a connection is reset, the application needs to re-establish a new connection, which adds additional overhead and latency. In order to solve this problem, you can improve the utilization of the connection pool through connection reuse.

Connection reuse means that in the connection pool, when a connection is released, it is not closed directly, but put back into the pool for reuse next time. The advantage of this is that it avoids frequent connection establishment and closing operations and improves connection utilization.

To achieve connection reuse, you can take the following steps:

1. Maintain a collection of reusable connections in the connection pool. When the connection is released, it is put into the collection.
2. When a connection needs to be established, first check whether there is an available connection from the collection of reusable connections. If so, use the connection directly without re-establishing the connection.
3. If there is no available connection, determine whether a new connection needs to be established based on the configuration of the connection pool. If necessary, establish a new connection. If not needed, other strategies can be used, such as waiting for a period of time and then trying to obtain a connection again.
4. When the connection is no longer used, put it back into the connection pool for reuse next time.

Through connection reuse, frequent connection establishment and closing operations can be reduced and the utilization of the connection pool can be improved. But at the same time, there are some issues that need to be considered:

1. Connection validity detection: Before putting the connection into the connection pool, the connection needs to be checked for validity to ensure that the connection is still available. The validity of the connection can be tested by sending a simple SQL query.
2. Connection timeout processing: If a connection has not been used for a period of time, it should be removed from the connection pool to avoid occupying too many resources. You can control connection timeout processing by setting the maximum idle time for the connection.
3. Maximum number of connections: The connection pool should set a maximum number of connections to avoid too many connections taking up too many resources. The maximum number of connections can be dynamically adjusted based on the needs of the application and the load on the database.

Improving the utilization of the connection pool through connection reuse can effectively reduce the cost of establishing and closing connections, and improve the performance and efficiency of applications and databases. Properly configuring the connection pool parameters and paying attention to connection validity detection and timeout processing can make better use of the advantages of the connection pool and improve the stability and reliability of the system.

The above is the detailed content of MySQL connection is reset. How to improve connection pool utilization through connection reuse?. For more information, please follow other related articles on the PHP Chinese website!