By Ellis Horowitz
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With so many variables, it is not easy to design an optimal solution in advance. However, we can test the performance of individual components and see if the component is a bottle neck. For example, if it takes three seconds to refresh a page provided by a web application you can rule out the database engine as a bottleneck if you can time the database access independently. The knowledge gained creating unit tests can be reused here because we already know how to isolate some functionality, and adding a timer and asserting that the response for a query is fast enough can be made a test itself.
The knowledge gained creating unit tests can be reused here because we already know how to isolate some functionality, and adding a timer and asserting that the response for a query is fast enough can be made a test itself. [ 23 ] Choosing Your Tools It is also quite feasible to separately measure the time it takes to fetch a web component and to render it in the browser with a tool like Firebug and get an idea whether the client or the server is the bottleneck. com/). Access control and authentication In almost every application that we develop in this book, we implement some sort of authentication scheme.