What are the methods for optimizing Druid connection pool configuration?

Druid is a high-performance database connection pool that can assist in managing database connections and improving system performance. Here are some methods for optimizing the configuration of the Druid connection pool:

1. Adjust the size of the connection pool: Modify the size of the connection pool according to actual needs to ensure that the number of connections in the pool is neither too many nor too few. You can adjust the size of the connection pool by configuring parameters such as initialSize, minIdle, and maxActive.
2. Set the connection pool initialization parameters by using the initialSize parameter to set the number of connections in the pool and prevent frequent creation of database connections during system startup.
3. Set the connection timeout: Use the maxWait parameter to control the maximum waiting time for connections, preventing connection timeouts from causing system performance degradation.
4. Enable monitoring function: The Druid connection pool offers a variety of monitoring functions, which can be enabled by configuring the ‘stat’ parameter to monitor the status of the connection pool in real time.
5. Configure connection pool parameters: Set appropriate parameters such as validationQuery and testWhileIdle according to the database type and system requirements to ensure the stability and performance of the connection pool.
6. Use connection pool filters: Druid connection pool supports custom filters, which can be added by configuring the filters parameter to enhance and expand the functionality of the connection pool.

By utilizing the above methods, the configuration of the Druid connection pool can be optimized to enhance system performance and stability.