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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 to distribute Varnish cache differently to different kind of requests?

I have a redirect in my store that shows a different store view based on the client's location. It reads the header via Fastly and redirects the customer to a different store view using every time the same URL. When there are many customers…
Rafael Corrêa Gomes
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Why apache2 mod_cache_disk cant store files in ramdisk?

I use Apache2 mod_cache_disk with symlink to my ramdisk: /tmp/ramdisk/mod_cache_disk but I cant get it to work :( It only works when path leads to real directory. How can I fix this problem ?
Macsurf
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only flush the write cache if there's no read activity

Normally the Linux Kernel flushes the write cache if a specified time limit is exeeded or the cache is full. This leads to stalling with HDDs since the writing process makes reading processes much slower. That's why I want to avoid a flush of the…
france1
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Adding location-block to cache files makes those files return 404

I want to cache some static files using Nginx. But I somehow can't get it to work. This is my nginx.conf: user www-data; worker_processes auto; pid /run/nginx.pid; include /etc/nginx/modules-enabled/*.conf; events { worker_connections 768; …
O'Niel
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How can we remove Google cloud builder cache. I am trying to build an image but it gives an error from a previous build attempt

This is the error it gives but the thing is I corrected the "MKDIR" command to mkdir but the error didn't go away, there is no MKDIR command in my Dockerfile anymore but the error stays the same. I deleted the repositories and even the project,…
Sardar Arslan
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Sessions lost on specific network only

NOTE: My apologies - I am not a server admin, but I have a problem that I believe may be server related, or combination of server and network related. I do not have too much technical information about the server or network, so I apologize if facts…
Kobus Myburgh
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"The User Agent is required to access this page" message only goes away when I clear NGINX cache

I'm new to NGINX and can't really tell if there's a problem with it or with our app. My PHP application has a php package Device Detector that is responsible for User Agent info as well as CodeIgniter, which has a file UserAgent.php. I had an event…
Cris Tecelo
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Caching 401 response on bad token in nginx njs

In our application whenever a token (that arrives in a header) is invalid - it is practically guaranteed there won't be an exact valid token. So I'm trying to offload the responsibility of responsding 401 to nginx (with or without njs) Trying to…
Boaz
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Router forces browser to use older, presumably cached, webfiles

We are trouble shooting website where we deploy a new version but our Computer browser still pulls the older pages. When we disconnect from the router (WiFi) and connect to a hotspot (mobile phone/data), the browser correctly pulls the new pages. If…
puk
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HTTP_IF_NONE_MATCH Missing on Server Side with Chrome Requests to NGINX

I'm trying to add etag based cache verification to a web app I've developed that runs on Apache via an NGINX reverse proxy. The web app is written in Perl. In the Perl script, I check for the $ENV{'HTTP_IF_NONE_MATCH'} header and then test the etag…
Timothy R. Butler
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Why I'm Getting "Service web-cache lost on WCCP clinet" error on cisco router?

I'm configuring wccp and squid. Here is wccp configuration or router: ip wccp web-cache redirect-list wccp-access group-list wccp-server ! interface FastEthernet1/0 ip address 10.10.10.1 255.255.255.0 ip wccp web-cache redirect in duplex auto …
Mehran
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MySQL performance issue due to caching

perl mysqltuner.pl --host 127.0.0.1 [--] Skipped version check for MySQLTuner script [--] Performing tests on 127.0.0.1:3306 [!!] Successfully authenticated with no password - SECURITY RISK! [!!] failed to execute: SHOW SLAVE STATUS\G [!!] FAIL…
Sayaman
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Why browsers fetch images again after reloading my page?

I am developing a web app, and I want all the images (a couple hundred MB worth - 20 000 - 50 000 thumbnails) to be downloaded once and never downloaded again, as those don't really change. Also, those images are downloaded from youtube servers, and…
Nikolai Frolov
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Squid : Do not cache these destinations ( I do not want some address to be cached by squid )

I have a virtual proxy client and I have a squid proxy server. I would like to add some addresses to block caching for them. Either their domain or IP address: www.apache.org 188.184.21.108 root@SERVER:/etc/squid # cat…
ArcherPacman
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Setting Nginx expires epoch header selectively

I have a folder containing imagery on my server that is used to service both a mobile app, via a CDN, and to work with a backend webapp used to manage the content delivered to the app. For the latter - the backend webapp - I want to ensure that…
DroidOS
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