If no maximum limit is set on the maximum number of session objects that can be held in memory, then it is possible to have many session objects during peak user load time.

Once the non-functional requirements of a system (load capacity, average response time, peak-load response time, and so on) have been met the application can be deployed and the customer is satisfied.

For peak load unit, its process model and structure parameters have obviously fast time-varying characteristic while load changing.