How does database connection pool work?

Each JDBC resource specifies a connection pool. The JDBC driver translates the application’s JDBC calls into the protocol of the database server. When it is finished accessing the database, the application closes the connection. The application server returns the connection to the connection pool.

What is the purpose of connection pooling?

Using connection pools helps to both alleviate connection management overhead and decrease development tasks for data access. Each time an application attempts to access a backend store (such as a database), it requires resources to create, maintain, and release a connection to that datastore.

What is connection pooling explain its working with the help of an example?

Connection pooling means a pool of Connection Objects. Whenever our application requires such objects, it acquires them from the pool rather than creating a new one. An application that uses a connection pooling strategy has already DB connection objects which can be reused.

How is connection pool implemented?

Create a List or HashMap. Create predefined number of connections. Add them to the collection. Now when the ConnectionImpl getConnection() method of ConnectionPoolingImpl class is invoked return a connection reference.

How do I know if my connection pool is working in spring boot?

In Spring Boot, @Autowired a javax. sql. DataSource , and you will know which database connection pool is using in the current running application.

How do I monitor active connection pool in SQL Server?

To use the SQL Server Profiler to monitor connection pooling:

1. Start the Profiler using one of the following methods.
2. When the SQL Server Profiler appears, select File → New → Trace.
3. Supply connection details and click OK.
4. Select the Events tab of the Trace Properties dialog box.

What is connection pool in SQL Server?

A connection pool is created for each unique connection string. When a pool is created, multiple connection objects are created and added to the pool so that the minimum pool size requirement is satisfied. Connections are added to the pool as needed, up to the maximum pool size specified (100 is the default).

How do you use connection pool in spring boot?

Here’s how Spring Boot automatically configures a connection pool datasource:

1. Spring Boot will look for HikariCP on the classpath and use it by default when present.
2. If HikariCP is not found on the classpath, then Spring Boot will pick up the Tomcat JDBC Connection Pool, if it’s available.

What is the best way to handle database connection?

4 Answers

1. remove the public getConnection method, if it used outside the Database class you really have a design problem.
2. remove the commit method.
3. remove the instance variable connection , instead obtain a connection per call.
4. and properly close this connection in the finally block of each call.