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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.

1588 questions
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How can I set up Linux URL Caching?

I'd like to set up Linux to cache some commonly requested URLs so that it doesn't have to go out to the net to get them every time. This would be a system-wide URL cache, not just in a particular browser. For example, a program might request…
Travis J Webb
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Cannot acces a page on my system,which is acessible everywhere in world

I need to open a website "http://www.book-pal.com/" , which is opening everywhere in world, but not with me. it shows a 404 page not found error and this is the content of the Cache, when i debugeed the http response: Data Size 1206 Device …
Farhan
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How often should I clear the OpenX cache directory?

OpenX creates many small php files in /openx/var/cache. After some time, the amount of files is so big that it has an impact on server performance (the amount of files was so big that listing the files was not possible.) My question is: How often…
B14D3
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NFS Caching Causing Intermittent Lag

We're running nfs over a cluster of isilons and are intermittently experiencing quite a lag when creating a dir on one machine and reading on another (of about 30s). This only seems to happen when the network is quite busy, but it has been suggested…
user11836
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news portal caching system

We have news portal. We have 5 identical dedicated boxes. 2xE5620, 16GB ram, 4x146gb 15k sas raid10. at this time bottleneck is mysql. One box is load balancer (nginx), two boxes (C,D) is nginx & phpfpm, one is mysql backup and one box is mysql. At…
Guntis
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Caching DNS. How does it choose what DNS server to query?

I have a local caching dns server (named). Say I want to resolve a blizzard.com domain. How does my local DNS manage to find the correct server to query for this domain? Does it have a list of other DNS servers somewhere? Could I change them (say to…
Vasisualiy
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Windows 2003 DNS server CACHE issue

Our internal DNS server with windows 2003 has problems with querying specifically .co domains. I've done a Package capture and found that the DNS server does not do anything when querying .co domains(the others like .com .net etc are fine). So I…
Dongdong
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nginx - how to get server inheritance / adding caching headers to various reverse proxied sites

I have about 5 sites running on different ports via reverse proxy and accessible under different sub domains. Some of these sites are setting the expires (/ cache-control max age header) by themselves and don't require this to be managed, however…
Alistair
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Django/MySQL/Memcached for 10K user visitors

I'm currently using CentOS (512 RAM, Dual-core CPU) for my website. Here are the specs: Django 1.3.1 Python 2.7.2 Apache 2 with mod_wsgi 3.3 MySQL 5 (about 5,000 records) Memcached (120 MB for running) Nginx for serving the static content When my…
anhtran
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squid cache_peer_access made error?

Sorry, i'm learning Squid. This is my squid key config cache_peer 192.168.157.201 parent 3128 0 carp no-netdb-exchange login=PASS http11 cache_peer 192.168.157.202 parent 3128 0 carp no-netdb-exchange login=PASS http11 cache_peer 192.168.157.203…
altman
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Purge content in Varnish when CTRL+F5 or CTRL+R is pressed

I would like to setup Varnish to purge content in cache and get it directly from backend when CTRL+R or CTLR+F5 is pressed. I use these rules but this only gets content from backend when CTRL+F5 is pressed. When I press F5 only I get data from…
Spacedust
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HTTP resource caching / fetching

I'm trying to optimise a page, and I'm seeing some strange behaviour. Each time I click on a link to the page, all resources are fetched from the server, responding with 200s. However, when I refresh the page (specifically, F5 in Firefox), all…
Bobby Jack
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nginx does not write to cache behind Varnish

I have nginx as a reverse proxy to a remote web server. Cache is written to file. However, when I place Varnish in front of it, nginx stops writing to cache file, which causes a performance hit and it doubles the traffic. How it is possible that a…
jcisio
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For IIS7 what is the default behavior when output caching has no rules added for .aspx files

If there are no rules for output caching under IIS7, would global.aspx or default.aspx pages be cached, by default, or not cached? I am trying to see if we need to explicitly turn off caching for two sites, one with windows integrated authentication…
James Black
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Memcache Master and slaves

I'm using memcached-1.4.5-1.el5 & memcache-2.2.6 as php extension and memcached-1.2.8-repcached-2.2.1 for replication. The above packages are installed on 4 servers. How can I do the following? Server1 : Memcache Master Server2,3,4 : Memcache…
Linuxstartway
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