How does a druid maintain their connection to nature?

There are several ways to maintain connection activity in Druid.

1. Configure some parameters in the Druid connection pool to control its behavior, such as setting the maximum number of active connections, minimum number of idle connections, and maximum wait time, to ensure that there are always enough active connections available.
2. Using a heartbeat mechanism to maintain connection activity involves regularly sending some simple SQL queries to the database to ensure the connection is still valid. The validateQuery attribute in Druid can be configured to specify the heartbeat query statement.
3. Avoid connection timeouts caused by prolonged inactivity by releasing connection resources promptly in the code, or utilizing a connection pool’s mechanism to reclaim unused connections that have been idle for a long time.
4. Set the maximum connection idle time and maximum active time for the connection pool to ensure that connections are recreated or destroyed within a certain time frame, avoiding disconnection by the database server due to inactivity for too long.

By following the above method, it is possible to effectively maintain the connection activity of the Druid connection pool, thus enhancing system stability and performance.