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Web Scalability for Startup Engineers by Artur Ejsmont

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CHAPTER3

Building the Front-End Layer

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The front-end layer spans multiple components. It includes the client (usually a web browser), network components between the client and your data center, and parts of your data center that respond directly to clients’ connections. The front end is your first line of defense, and its components are the ones receiving the most traffic. Every user interaction, every connection, and every response has to go through the front-end layer in one form or another. This in turn causes the front-end layer to have the highest throughput and concurrency rate demands, making its scalability critical. Luckily, a well-designed ...

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