The technical principles of the HikaricP framework in the Java class library

Hikaricp is a high -performance database connection pool framework in the Java class library. It uses some advanced technical principles to provide efficient connection management and resource utilization.This article will explore the technical principles of the HikaricP framework and provide examples of Java code. 1. Connect the pool initialization HikaricP uses an inert loading mechanism, that is, it will only load and initialize the connection pool when using the connection pool for the first time.The initialization of the connection pool mainly includes setting the minimum and maximum connection number of the connection pool, the timeout timeout, and the maximum survival time of the free connection.The following is a sample code for the initialization of the connection pool: HikariConfig config = new HikariConfig(); config.setJdbcUrl("jdbc:mysql://localhost:3306/mydatabase"); config.setUsername("username"); config.setPassword("password"); config.setMinimumIdle(5); config.setMaximumPoolSize(20); config.setConnectionTimeout(30000); config.setIdleTimeout(600000); HikariDataSource dataSource = new HikariDataSource(config); 2. Connection acquisition and release HikaricP uses an efficient connection acquisition and release mechanism.When a database connection is required, the connection pool will check whether there is a free connection available. If there is, return a free connection; if not, create a new connection according to the maximum number of connections and timeouts of the configuration.When the connection is no longer used, you can use the `Close ()` method to release the connection to the connection tank instead of directly close the connection.The example code is as follows: try (Connection connection = dataSource.getConnection()) { // Use the connection to perform the database operation } catch (SQLException e) { e.printStackTrace(); } 3. Connection status management HikaricP manages the availability and effectiveness of the connection by maintaining the state of the connection.The state of connection includes free, active, busy, etc.When a connection is obtained, its state will be marked as "busy". When the connection is released to release the connection pool, its state will be marked as "idle".Through status management, HikaricP can quickly and effectively judge the availability of the connection and conduct reasonable management of the connection. 4. Connecting pool maintenance Hikaricp provides some mechanisms to connect to the maintenance pool maintenance to ensure the stability and efficiency of the connection pool.Among them, the creation and destruction of the connection is dynamically adjusted according to the usage situation, avoiding the expenses of the premature creation or destroying the connection.At the same time, the recycling and reuse of the connection have also been optimized to reduce the expenses of invalid connection.The connected health inspection and overtime management also helps discover unavailable connections and processes in time. In summary, HikaricP provides efficient database connection pool functions through inert loading, connection acquisition and release, connection state management, and connection states management, and connecting pool maintenance.Through reasonable configuration and use, better database connection management and resource utilization can be obtained in Java applications. I hope this article will help you understand the technical principles of the HikaricP framework.If you have any questions or you need to understand a deeper understanding, please ask at any time.