Chapter 2 GatherinG requirements • Content growth rate: You need to estimate percentage increase in content volume per year; that will help you to analyze your load capacity per year. • Average session time: It is the average amount of session time for a user, and helps you to analyze and estimate in-memory support required in the near future. • Geographic (Geo)-specific load: Globally available applications should distribute load across geographical locations. Performance, availability, and scalability should be specified for each geographical location. • Peak volume or traffic time: The maximum amount of users that should be supported by the application at peak business hours. • Data volume: As data volume keeps changing and it depends upon load and usage of the application, you should estimate the average amount of data that should be handled by the DXP application, which will let you estimate the disk space requirement in the near future. Performance–Response Time, Throughput, Utilization, Static Volumetric It is essential to check your industry standards for measuring application performance. Results should be collected from real browsers, which will assist you in checking the page load time on different browsers and operating systems. Gain insight into the performance requirements and testing approaches. Before beginning with load testing, you need to determine page response time applicable to the business process and whether response time is justifiable and achievable. Performance Requirements You need to consider and build workload profiles for the user stories as mentioned in Table 2-9, and associated workload profile related to use case mentioned in Table 2-10. 46