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Questions tagged [cache]

A location or process for storing of transitory or temporary data in order to improve application or system performance.

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IIS Caching by Expire or Cache Control headers

Is it possible to get IIS 7 (Server 2008) to cache content by looking at the Expires and/or Cache Control headers of the content being returned ? (I have an ASP.NET app that is serving image tiles. Their expiry varies depending on different…
BjartN
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Simple example of transparent proxy with Cisco IOS and Squid

Does anyone have a simple example with Cisco IOS and Squid whereby a Cisco router intercepts traffic and redirects it to an adjacent Squid 3 cache? Is there a way to do this for only certain requests (e.g. .zip, .rar, etc ...)
ensnare
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Stopping CSC with a GPO

I have network drives mapped to my users. If they lose network connection for any reason, it pulls up the client side cached version of it and lets the user work in that. Now some duplicate files are popping up and people are seeing inconsistent…
blsub6
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Website with optimal cache control

My goal I would like to let browsers cache my whole website, but only download the new information when I have changed one or more files. My situation After some research I have found a way to do this. That is to add a Far Future Expires Header to…
Z0q
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Varnish multi proxy via DNS config and regular expression

I would like to set up a proxy "Varnish" as a bridge between public and private addresses. I thought I could use varnish and DNS servers to map private to public. For example: http://service.domain - (Varnish) -> service-int.domain ... …
thc2cat
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Nginx 0.67 ignores Cache-Control: no-cache from upstream proxy

I want to specify no caching for some responses from my (Pylons) upstream server in order to avoid users being able to access cached content after logoff. To do that I'm returning a no-cache header as per the nginx docs. Specifically, this…
Rick Morrison
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How to set no-cache headers to a specific url using htaccess and mod_rewrite?

I have a wordpress website that is using the wp default .htaccess: RewriteEngine On RewriteBase / RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule . /index.php?nocache…
Strae
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is there any point running APC **and** memcached concurrently

Do APC and Memcached cache the same data? I understand that APC caches both files and objects/variables whereas memcached is object-only, but does memcached offer anything that APC doesn't? I've seen setups where both are used, but that seems to…
Jonathan Day
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how to test a url resource exists in squid cache or not?

I use squid to cache some big files. And I want to make sure if these big files are in squid's cache. But I just don't want to download the file, then go to squid log to find this. That will take too much time and squid resource. Is there are cheap…
Leon
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varnish+nginx+php-fpm good combo?

does having varnish as a reverse proxy/cacher with nginx backend for dynamic content a good idea? im looking for a way to really speed content up when dealing with a ddos or get flood.
John Thompson
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How does the DFS 'cache duration' setting work?

We have a large and complex multi-site DFS structure. I'm using DFS for an application that would be disrupted if any part of the structure was redirected out of site (although I'd rather it be disrupted than fail entirely). The path is something…
Alex
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Varnish with multiple hosts/subdomains

I'm new to Varnish, and I'm hoping it already does this "out of the box", but I'd like to clarify before I consider using it in production: Here's my setup: I have multiple sites running off of the same machine that vary by subdomain (i.e.…
jerhinesmith
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url rewrite to make generated thumnails cache like static, a syntax question

this is a pain in the ass-problem!! Given: most proxies, do not cache resources with a "?" in their URL even if a Cache-control: public header is present in the response. To enable proxy caching for these resources, i have removed query strings from…
Sam
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postfix concurrency limit with round robin dns

Take the following internal round robin dns setup mymta.com. IN A 172.31.1.1 mymta.com. IN A 172.31.1.2 mymta.com. IN A 172.31.1.3 mymta.com. IN A 172.31.1.4 mymta.com. IN A 172.31.1.5 mymta.com. IN A 172.31.1.6 mymta.com. IN A 172.31.1.7 mymta.com.…
goose
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Database cache or file cache?

Imagine a websystem that's going to cache webpages; it's going to store about 10 million of 'm. The only thing I need to do is to return a webpage now and then from the cache, and update/delete webpages in the cache. The approximate size of the…
user59810
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