connection pooling is a method specifically designed to manage and reuse database connections, enhancing the performance of applications that interact with databases.
A database connection acts as a bridge between a Java application and a database server. Establishing and terminating these connections should be making efficient management crucial for optimal application performance.
Connection pooling involves creating a pre-established database connections that can be reused. This is contributes reduces the overhead of establishing new connections for each database operation, thereby enhancing application efficiency & concurrency controlling.

Without connection pooling, database interaction would require establishing a new connection and terminating it afterward. This repetitive task & occur the overhead, leading to additionally effort to potential resource drain. Connection pooling resolve these issues by reusing existing connections & it will be in improved efficiency, concurrency, and overall system stability.

The Spring boot introduce the HikariCP for connection pool implementation.

HikariCP can configure in your application.properties file

# HikariCP settings
spring.datasource.hikari.maximum-pool-size=10
spring.datasource.hikari.minimum-idle=5
spring.datasource.hikari.idle-timeout=600000
spring.datasource.hikari.connection-timeout=30000
spring.datasource.hikari.max-lifetime=1800000
spring.datasource.hikari.leak-detection-threshold=2000
spring.datasource.hikari.pool-name=MyHikariCP

Summery

Connection pooling is a vital mechanism for enhancing the performance and scalability of applications that interact with databases. By maintaining a pool of reusable database connections, connection pooling minimizes the overhead associated with establishing and tearing down connections for each database operation. This approach not only optimizes resource utilization but also improves application responsiveness and stability.