How can you check the current number of connections in Tomcat?

You can check the current number of connections in Tomcat through the management console or by using JMX.

The steps to view the current number of connections through the management console are as follows:

1. Enter http://:/manager in the browser to access the Tomcat management console.
2. Enter the correct username and password to log into the management console.
3. Navigate to the Server Status link located on the left sidebar of the management console page and click on it.
4. On the server status page, you can view the current number of connections, including active connections, idle connections, and maximum connections.

The steps to check the current number of connections using JMX are as follows:

1. Open the command line terminal and navigate to the bin directory of Tomcat.
2. Execute the following command to connect to Tomcat’s JMX interface.
3. Start the JMXdebugging by running the catalina.bat/jpda command.
4. Run the following command to launch the jconsole tool, which is used to monitor JMX.
5. Java console
6. In jconsole, select the Remote Process option and enter the following parameters:
7. Select the Tomcat server process for Remote Process.
8. Host: Tomcat server address.
9. Port: The JMX RMI connection port for Tomcat (default is 1099).
10. Protocol: Select “Attach to an agent.”
11. Click the Connect button to connect to the JMX interface of Tomcat.
12. In the MBeans tab of jconsole, expand Catalina -> ThreadPool -> http-nio- (may vary based on your configuration).
13. Under this MBean, you can find properties related to connection count, such as currentThreadCount and currentThreadsBusy.

By using the above method, you can view the current number of connections in Tomcat as well as other information related to connections.