Detailed explanation of the technical principles of HikaricP Java6 framework

HikaricP is a high -performance Java database connection pool framework, which has performed well in optimizing the management of connection pools.This article will explain the technical principles of the HikaricP framework and provide some related Java code examples. 1. Introduction to HikaricP framework HikaricP is an open source project developed by Japanese programmer light (Hikari). It is one of the fastest and lightest database connection pools.HikaricP is committed to providing high -performance, high availability, and low -delay connection pool management solutions. It can effectively manage database connections and provide fast connection acquisition and release. Second, the basic principle of connecting pool The connection pool is a certain number of database connection pools in advance. It is obtained from the connection pool when you need to use these connections, and then put back into the connection pool after use.This can avoid frequent creation and destruction of connections and improve the performance and efficiency of database access. HikaricP framework through the following core principles to achieve high -performance connection pool management: 1. The initialization of the connection pool Hikaricp will create a certain number of idle connections when starting and put them in the connection pool.In this way, when the connection is obtained, there is no need to dynamically create a connection. You can obtain available connections directly from the connection pool. Example code: HikariConfig config = new HikariConfig(); config.setJdbcUrl("jdbc:mysql://localhost/test"); config.setUsername("root"); config.setPassword("password"); config.setMinimumIdle(3); config.setMaximumPoolSize(10); HikariDataSource dataSource = new HikariDataSource(config); 2. Dynamic adjustment of the connection pool The HikaricP framework dynamically adjusts the size of the connection pool by monitoring the usage situation and demand of the connection.When the connection demand is increased, the system will automatically create a new connection and add it to the connection pool; when the connection demand is reduced, the excess idle connection will be released to avoid waste of resources. Example code: HikaridataSource DataSource = ... // omit the initialization of the connection pool // Dynamically adjust the size of the connection pool dataSource.setMaximumPoolSize(20); 3. Quickly connect to obtain and release The HikaricP framework achieves rapid connection acquisition and release by using efficient algorithms and data structures.The acquisition of connection is to synchronize the use of locks and condition variables to ensure thread security.The release of the connection is to be obtained again by putting the connection to the available state. Example code: HikaridataSource DataSource = ... // omit the initialization of the connection pool Connection connection = dataSource.getConnection(); // Use the connection to perform the database operation connection.close (); // Release the connection 4. Health checks connected The HikaricP framework will regularly check the health state of the connection, including checking the effectiveness of the connection, the free time, and the maximum use time.If you find that the connection is not available or exceeds the maximum use time, it will automatically remove it out of the connection pool and re -create a new available connection. Example code: HikaridataSource DataSource = ... // omit the initialization of the connection pool // Set the maximum free time of connection dataSource.setIdleTimeout(60000); Summarize: HikaricP framework achieves high -performance connection pool management through technologies such as the initialization, dynamic adjustment, rapid acquisition and release, and health inspection of the connection pool.It is very widely used in the Java6 framework and is very helpful for optimizing database connection access performance. I hope the introduction of this article will help you understand the technical principles of the HikaricP framework.If necessary, you can refer to the above sample code to use and configure the HikaricP framework.