Session Build-Up

For all secured transactions, Citrix ADC performs the SSL offloading process for the first transaction and then stores the SSL session based on the Session Reuse configuration.

Based on the traffic rate, there is a chance for session build-up over a period of time, which can lead to a large amount of memory being held up by these sessions in Citrix ADC.

Session build-up events alert the administrators and provides recommended actions to resolve this event.

View anomalies for session build-up

To view anomalies for session build-up:

  1. Navigate to Application > Dashboard

  2. Double-click on the application

  3. In the App Activity Investigator, click the error legend plotted for Session Build-Up on the graph

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  4. From the Session Build-Up page, you can view details such as virtual server name, time, severity, and detection message

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    Under Details, you can view:

    • The time that occurred the session build-up anomaly

    • The name of the virtual server

    • The severity of the anomaly

    • The message indicating that X number of SSL sessions available in the virtual server and currently, there is Y number of SSL handshakes per second within the configured timeout session.

    The Recommended Action to fix this anomaly is to either reduce the session timeout or disable the session reuse.