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Backbone.js Essentials by Jeremy Walker

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Bandwidth-related performance issues

While it's true that the typical user's bandwidth has grown significantly in the recent years, the bandwidth nevertheless remains a constant issue for web developers. However, many developers don't realize that there are actually two main sources of bandwidth problems. The first of these is fairly obvious: forcing your users to download files that are too large. But, there is also a second, less obvious source: forcing your users to download too many files at once.

Downloading excessively large files

Let's start with the obvious source first. If the files that your users need to download are too large, it doesn't matter whether they are images, videos, or JavaScript code files: Your site is going to load slowly. ...

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