Cache replacement policy evicts the cached objects of low popularity to maintain the proxy cache
space when it becomes full.
Even if you think shared proxy caches
are evil, consider allowing single-user-browser caches to store your pages.
The device builds on top of Blue Coat's old proxy caches
, adding policy-based content filtering, anti-virus, and IM controls.
Server-facing" technologies like web switches and load balancers, proxy caches
, SSL accelerators, and similar devices are designed to improve the reliability and scalability of a web site.