What is connection pooling in JDBC?
A JDBC connection pool is a group of reusable connections for a particular database. Because creating each new physical connection is time consuming, the server maintains a pool of available connections to increase performance. When an application requests a connection, it obtains one from the pool.
What is JDBC connection pool size?
The connection pool configuration settings are: Initial and Minimum Pool Size: Minimum and initial number of connections maintained in the pool (default is 8) Maximum Pool Size: Maximum number of connections that can be created to satisfy client requests (default is 32)
How do you use connection pool?
Connection pooling means that connections are reused rather than created each time a connection is requested. To facilitate connection reuse, a memory cache of database connections, called a connection pool, is maintained by a connection pooling module as a layer on top of any standard JDBC driver product.
How do you create a connection pool in Java?
Let’s have a look at below steps to initialize connection pool.
- Create an instance of BasicDataSource.
- Specify JDBC Url, database username and password.
- Specify the minimum number of idle connection ( Minimum number of connections that needs to remain in the pool at any time)
What is connection pool in spring boot?
The default connection pool in Spring Boot 2 is HikariCP. It provides enterprise-ready features and better performance. HikariCP is a JDBC DataSource implementation that provides a connection pooling mechanism. If the HikariCP is present on the classpath, the Spring Boot automatically configures it.
Do we need to close JDBC connection?
At the end of your JDBC program, it is required explicitly to close all the connections to the database to end each database session. However, if you forget, Java’s garbage collector will close the connection when it cleans up stale objects.
What is the advantage of using JDBC connection pool?
Which of the following is advantage of using JDBC connection pool? Explanation: Since the JDBC connection takes time to establish. Creating connection at the application start-up and reusing at the time of requirement, helps performance of the application.
What is Java connection pool?
Connection pooling is a technique of creating and managing a pool of connections that are ready for use by any thread that needs them. Connection pooling can greatly increase the performance of your Java application, while reducing overall resource usage.
Which connection pool is best for spring boot?
Spring Boot uses HikariCP as the default connection pool, due to its remarkable performance and enterprise-ready features. Here’s how Spring Boot automatically configures a connection pool datasource: Spring Boot will look for HikariCP on the classpath and use it by default when present.