How to handle more concurrent connections in IIS ?

When dealing with embedding applications hosted in Internet Information Services (IIS), it is crucial to manage concurrent connections effectively to ensure optimal performance. Please follow the below steps for the application that is facing issues due to exceeding the maximum allowed connections.

Steps to Configure Application Pool Settings

1. Open IIS Manager:
    

   • Launch IIS Manager on your server. In the left pane, navigate to your application where the dashboard is embedded.
   

2. Locate Your Application:
    

   • Click on the application and select Basic Settings to find the associated application pool.
   

3. Access Application Pool:
    

   • Click on the application pool linked to your application.
   • Select Advanced Settings from the right-hand menu.
   

4. Adjust Idle Timeout:
    

   • In the Advanced Settings window, locate the Idle Timeout setting.
   • Set the Idle Timeout to 20 minutes (default).
   

5. Set Request Limit:
    

   • Find the Request Limit setting and set it to 0. This configuration allows the application pool to process an unlimited number of requests.
   

6. Configure Regular Time Interval:
    

   • Look for the Regular Time Interval setting and set it to 1740 (29 minutes).
   

7. Modify Maximum Worker Processes:
    

   • Search for the Maximum Worker Processes setting. You can set this to a value greater than 1 or set it to 0 for unlimited concurrent connections.
   

Monitoring Current and Maximum Connections

To monitor the current and maximum connections your application is utilizing, you can use the Performance Monitor tool in Windows.

Steps to Use Performance Monitor

1. Open Performance Monitor:
    

   • Search for Performance Monitor in Windows and open the tool.

2. Add Counters:
    

   • Right-click on the Performance Monitor window and select Add Counters.
   

3. Select Web Service Counters:
    

   • In the Add Counters dialog, search for Web Service.
   • Select your embedding application, then choose Current Connections and Maximum Connections.
   • Click Add and then OK.
   
   

4. Monitor Connections:
    

   • You will now see a graph where the blue line indicates current connections and the yellow line indicates maximum connections.
   
   • Please make the changes in your application pool based on the current connections and maximum connections that you are monitoring in the above tool.

Conclusion

By following these steps, you can effectively manage concurrent connections in your IIS application, ensuring that it can handle the required load without issues. Regular monitoring using Performance Monitor will help you maintain optimal performance