Also, if you use the same navigation images throughout your site, they'll be served from the browser cache almost instantaneously. Proxy Caches Web proxy caches work on the same principle, but a much larger scale. Because proxy caches usually have a large number of users behind them, they are very good at reducing latency and traffic. That's because popular objects are requested only once, and served to a large number of clients. Most proxy caches are deployed by large companies or ISPs that want to reduce the amount of Internet bandwidth that they use.
Proxy caches are a type of shared cache .
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