February 2011
Intermediate to advanced
332 pages
9h 3m
English
Content preview from Squid Proxy Server 3.1: Beginner's GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Peer communication protocols
We have learned about configuring Squid to be a part of a cache hierarchy. When many proxy servers are a part of cache hierarchy, they need to communicate to share information about the objects present in their cache so that neighbors can utilize these cached objects as hits. For communication among peers, Squid implements ICP, HTCP, and Cache Digest protocols. Later on, we'll have a brief look at ICP, HTCP, and Cache Digest protocols.
Internet Cache Protocol
ICP or Internet Cache Protocol is a simple web-caching protocol used to query proxy servers (cache peers) about the existence of a particular object in their cache. Depending on the replies received from the neighbors, Squid will decide the forwarding path for ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.