January 2004
Intermediate to advanced
464 pages
14h 47m
English
Content preview from Squid: The Definitive Guide
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Name
refresh_pattern
Synopsis
This directive provides a way to customize Squid’s algorithm for validating cached responses. HTTP has a relatively complex procedure for determining whether or not a cached response is fresh or stale. In some cases, origin servers provide an explicit expiration time. However, the majority of responses don’t have this information. For these, Squid applies some heuristics to the response. See Section 7.7 for more information.
Syntax | refresh_pattern |
Default | refresh_pattern . 0 20% 4320 |
Example | refresh_pattern \.jpg$ 0 75 7200 |
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.