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The previous chapters covered the fundamental concepts and basic operation of the Hypertext Transfer Protocol (HTTP). Modern HTTP, however, goes beyond the simple mechanics by which HTTP requests and responses are exchanged. It includes a number of features and capabilities that extend the basic protocol to improve performance and meet the various needs of organizations using modern TCP/IP internetworks.

In this chapter, I complete my description of HTTP by discussing several important matters that are essential to the operation of the modern World Wide Web. I begin with an overview of HTTP caching, ...

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