Fundamentals of programming languages - download pdf or read online

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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.

The technologies we choose to implement these components. ‹‹ Which other issues play a role in the design, like security and usability. With this extra knowledge, nothing can hold us back from writing our first web application in Python and that is exactly what we will do in the next chapter. [ 28 ] 2 Creating a Simple Spreadsheet In this chapter, we will develop a simple spreadsheet application. The spreadsheet functionality will be entirely implemented in JavaScript plus jQuery UI, but we will configure CherryPy to deliver the page that contains the spreadsheet application dynamically.

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