How to check the number of concurrent connections in tomcat

How to check the number of concurrent Tomcat connections: Visit the Tomcat Manager page (http://localhost:8080/manager/html) and enter the user name and password. Click Status->Sessions in the left navigation bar to see the number of concurrent connections at the top of the page.

How to check the number of concurrent connections in Tomcat

The method to check the number of concurrent connections in Tomcat is very simple, you can do the following Steps:

Step 1: Visit the Tomcat Manager page

Open the browser and enter the following URL in the address bar:

<code>http://localhost:8080/manager/html</code>

Where:

• localhost is the host address where the Tomcat server is located.
• 8080 is the default management port of Tomcat.

Step 2: Enter the username and password

In the login page that opens, enter the username and password for the Tomcat management interface. By default, the username is tomcat and the password is tomcat.

Step 3: Check the number of concurrent connections

After successful login, the page will display the Tomcat management interface. In the left navigation bar, find the Status option and click the Sessions sub-option.

Step 4: View the number of connections

In the Sessions page, you can see the details of the currently active connections, including the number of concurrent connections . Normally, the number of concurrent connections is displayed at the top of the page.

Other viewing methods:

In addition to viewing the number of concurrent connections through the Tomcat Manager page, you can also view it through the following methods:

• Use the command line tool jstat

Enter the following command in the command line:

<code>jstat -gccapacity `cat /proc/`pid`/stat | grep Threads` | grep -Eo '[0-9]+'</code>

Among them:

• pid is the PID of the Tomcat process.
• Use JVM monitoring tools

such as JVisualVM or VisualVM, these tools can connect to the Tomcat process and provide information about the number of concurrent connections and other JVM metrics.

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