Scalability – As the number of server requests or users increases, a web application continues to perform well. Reasons for problems with scalability include:
· Databases that were not properly tuned.· Coding design that hinders performance.
· Server hardware infrastructure that is unable to support increasing user load.
· Network capacity issues.
Performance scalability also depends on the original goals of the system. As each application is different, an application manager may set different business goals for the system. You might set a goal of having a system manage the load of a number of concurrent users, or set the goal of more transactions per second.
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