A location or process for storing of transitory or temporary data in order to improve application or system performance.
0
votes
0answers
29 views
“Could not display DNS Resolver Cache.” => Ping to hostname not possible, ping to IP directly works
Problem:
DNS Cache doesn't work:
"Could not display DNS Resolver Cache."
Additionally (as a result?) I cannot ping directly to target server name, although the resolve step to the actual IP ...
6
votes
0answers
91 views
How does Varnish deal with running out of storage?
I am using Varnish 3.0.3 (the latest as of this writing) with more or less the default install, using the following for storage:
# # Cache file location
...
-2
votes
0answers
17 views
What is the server URL thru which Apple updates occur? [closed]
I would like to know what is the URL thru which Apple updates occur.
I need this to setup caching for my Squid Proxy server.
-2
votes
0answers
20 views
Is it possible to configure Squid Proxy Server for Apple Updates? [closed]
Is it possible to configure Squid Proxy for Apple updates?
Ideally I would like to cache Apple updates rather than download it everytime.
Please let me know.
1
vote
0answers
12 views
Apache forces Cache-Control: private automatically for HTTPS requests
I'm trying to get browsers to cache assets over HTTPS. I am using MD5 fingerprinting method to allow long-term caching and I have this part working OK.
What doesn't work is setting the Cache-Control ...
0
votes
0answers
24 views
Cache layer for Heroku-hosted mobile-server app
I am developing a mobile app, backed by a server hosted on Heroku.
There will be a continual polling of the server by the client, to check for changes in state. To avoid hammering my Heroku servers I ...
3
votes
2answers
62 views
sssd and ldap authentication cache
On our box running OpenSUSE 12.2 we have installed OpenLDAP and sssd daemon. We are using these two services for user authentication. Recently we created a script which creates new web-users for our ...
0
votes
0answers
11 views
How to purge proxy.pac cache on Internet Explorer and how to control how long it can be cached
We recently modified proxy.pac & wpad.dat file on our servers.
How do we force IE to fetch the new .pac or .dat files?
Going ahead, is there any way to specify Expiry or cache control headers?
1
vote
0answers
22 views
Stunnel + Varnish + Apache questions
I am currently running Varnish in front of apache for all http traffic. I added stunnel so as to take advantage of the cache for https connections as well. So, for https, stunnel talks to varnish ...
-1
votes
1answer
33 views
limit filesystem cache size for specific files under linux
I have a directory with many files with high access rate. And I need to reduce the cache pressure of this specific directory to prevent other files (like my home directory files) from the pushing out ...
0
votes
0answers
22 views
Apache/mod_expires adding caching headers to POST responses
I have Apache 2.2.3 serving up (mostly) php content, and am adding headers to manage caching using mod_expires. This works well overall, but I've noticed that the value of ExpiresDefault is being used ...
1
vote
1answer
30 views
caching images with apache reverse proxy
I'm trying to set up an apache2 reverse proxy to cache images. (Apache, not nginx required)
There appear to be headers being cached, but not images,css etc.
My config:
CacheEnable disk /
...
0
votes
0answers
12 views
How are the line and page sizes justified from the graph? [closed]
I Googled upon this paper that uses a cool way to interpret the latencies, line sizes, and page sizes of a cache from a graph like this.
Apparently, the line size is where the the cache begins to ...
0
votes
0answers
29 views
Output caching in IIS doesn't work for Wordpress php files
I enabled output caching for php files
<configuration>
<system.webServer>
<serverRuntime frequentHitThreshold="1" frequentHitTimePeriod="00:00:30" />
<caching>
...
2
votes
2answers
41 views
Event 34 on Windows 2008 R2 write cache and sysvol on system drive
I have Windows Server 2008 R2 running as Active Directory Primary Domain Controller.
Since our domain is not large, I put the SYSVOL and NTDS folders in the default location on the system drive (SSD ...
0
votes
1answer
78 views
Squid proxy refusing to revalidate cache when Vary header present
squid.conf
cache_effective_user squid
http_access allow all
# Squid normally listens to port 3128
http_port 3128 accel defaultsite=localhost no-vhost ignore-cc
cache_peer localhost parent 80 0 ...
4
votes
1answer
129 views
Squid proxy not caching anything
squid.conf:
http_access allow all
# Squid normally listens to port 3128
http_port 3128 accel defaultsite=localhost no-vhost
cache_peer localhost parent 80 0 no-query originserver name=myAccel
...
0
votes
1answer
45 views
Ignore certain URLs on Varnish Cache
I'd like that Varnish completely ignored certain URLs on my websites.
I.e., www.site1.com/fileuploader and www.site2.com/fileuploader
I have 4 websites on the same VCL, and all those websites are ...
0
votes
0answers
22 views
Auto optimization MySQL databases — reduce fragmented cache build up
I'm looking for ways to auto optimize MySQL for a shared hosting server to keep the cache from getting fragmented and built up. this is a 74GB server so I have a lot of ram.
So far I have found the ...
0
votes
0answers
33 views
apache is caching my server root improperly … how can I stop it [closed]
First the problem ...
I have a php application which has dynamic data. Apache is behaving strangely when accessing the root of the app.
If I access the root by specifying the default file explicitly ...
0
votes
0answers
19 views
varnish caching [closed]
I am willing to use varnish as caching and my goal is to put varnish on the top and point DNS to varnish and if it has cached images and js or static pages so it should not even reach webboxes but ...
0
votes
0answers
43 views
LSI and CacheCade Optimisation
I'm just testing a testing a OpenVZ server with following HDD setup:
LSI9260-8i+BBU
6 x 2TB WD RE4
2x 120GB Intel 520 SSD - CacheCade
CacheCade VD:
RAID Level : Primary-1, Secondary-0
State ...
0
votes
0answers
34 views
KVM and RAM Cache [duplicate]
I have 4 kvm instances with 1 Gb each on a host with 16 Gb RAM.
Now the host is swapping and cache is almost 11 GB.
free -m
total used free shared buffers cached
...
3
votes
3answers
186 views
Slow Memcached: Average 10ms memcached `get`
We're using Newrelic to measure our Python/Django application performance. Newrelic is reporting that across our system "Memcached" is taking an average of 12ms to respond to commands.
Drilling down ...
0
votes
1answer
47 views
Nginx: Cache uWSGI as accessible files
I'm still pretty new to Nginx, but I know that it serves static files very well. For this reason I want to use Nginx together with TileStache as a map server.
TileStache has got a WSGI application ...
0
votes
1answer
168 views
My pages are not getting served from cache.But nginx is actually caching the files
i have set up an nginx server in ubuntu as a reverse proxy cache server.My application code resides in /var/www/myapp folder.
following are the configuration i have given in
server {
listen ...
0
votes
1answer
78 views
how to delete single nginx cache file?
when access http://mydomain.com/ its blank but working good with http://mydomain.com/index.php
i need to delete nginx cache file for http://mydomain.com/ how to do it?
Here my nginx cache conf.
...
0
votes
2answers
46 views
Wordpress feed does not update after APC and Cloudflare
I am running a Wordpress site on a Ubuntu server. I installed APC and setup Cloudflare. After that I started having a strange problem with the feed.
When I check the feed on the browser, I can see ...
0
votes
1answer
12 views
cache external responses
Is it possible to set up an caching proxy server to cache responses back to our system(s) from an external service that we use. My first thought is some sort of caching reverse proxy mechanism where ...
0
votes
0answers
55 views
Varnish: Exclude section of page
Is there any way to exclude some webpage parts from cache? For example, I have Recent Additions block on my homepage which gets refreshed after every 15mins.
I know there is something like ESI ...
0
votes
1answer
30 views
nginx didn't cache page
I have FreeBSD server with nginx as reverse proxy.
When I test it with ab util, I see some strange things, such as:
Internal pages aren't cached.
Main page is cached, but sometimes the non-cached ...
0
votes
1answer
52 views
autoscale static content on ec2 using local cache
Hello Serverfault members.
I want to achieve the following setup on EC2:
A load balancer starts and stops instances which only serve static content. (a javascript based application)
I do not want to ...
0
votes
1answer
115 views
Nginx ssi with proxy_cache hanging after first request
I am using Nginx's proxy cache for our dynamic pages and have recently integrated ssi. The first page load works fine but once the page is cached and another request comes through the page just hangs.
...
0
votes
1answer
58 views
squid:how to keep cached contents up-to-date
Is there a way to let squid check if cached contents are outdated?If cached contents ARE outdated,how to let squid fetch the newest contents from original server?
0
votes
1answer
56 views
X-Cache: MISS from log2cache.spacecom.in
curl --head http://mashable.com
HTTP/1.0 200 OK
Status: 200 OK
Content-Type: text/html; charset=utf-8
X-UA-Compatible: IE=Edge,chrome=1
Cache-Control: public,max-age=641,must-revalidate
...
0
votes
0answers
62 views
w3wp.exe is restarting but all GET requests are eventually queued and serviced?
I have a w3wp.exe that is restarting on my IIS server (see specs below). Memory gradually climbs to ~3G then it randomly restarts itself about every 1-2min.
Memory Usage:
The odd thing is that ...
1
vote
2answers
21 views
debugging cache control
How can I check if a website is being cached correctly?
I would like the webpages to be cached by browsers, but I also would like that page updates be visible immediatly when a user visits teh ...
0
votes
0answers
41 views
Restrict uploading for groups in squid
How can i restrict size of uploading files in squid for groups?
I've been used
request_body_max_size
But it working for all squid's clients.
I've read this, but this config doesn't work.
0
votes
1answer
159 views
How does Nginx reverse proxy cache work?
I don't understand how a reverse proxy with caching works.
Let's assume that the cache is empty.
User1 loads index.php (dynamic content). There's no cache, so Nginx queries the php file. The server ...
0
votes
2answers
62 views
Has L2 cache stopped getting faster? [closed]
I was reading this question which references L2 cache hits as taking about 10ns: Are networks now faster than disks?
However I distinctly remember there being 10ns cache ICs for the 486 generation. A ...
1
vote
1answer
73 views
Reliably test ColdFusion server health
The Background
We're running a Varnish cache server in front of a CF/Apache2 backend server. The varnish box runs a healthcheck probe every two seconds as follows:
probe healthcheck {
.url = ...
0
votes
0answers
28 views
Configuring cache control
I'm trying to get cache control "under control" but am lost. I'm running Supercache for Wordpress which put a bunch of stuff in my .htaccess, but I can't post it because my server is currently down.
...
1
vote
3answers
118 views
nginx + php-fpm + varnish + ssl
I have a social networking site and because of that we want to run ssl all the time. does this defeat the purpose of using any type of cache system for even static content since everything will be ...
0
votes
1answer
90 views
PHP APC not working
I just installed APC with PHP Handler FastCGI. But it seems the Cache never working.
if(($t=apc_fetch('key_4321'))===FALSE){
$t=time();
apc_add('key_4321', $t, 24*60*60);
}
echo $t;
Almost ...
0
votes
0answers
42 views
Apache BufferedLog
I came across Apache bufferedLog which writes to a buffer and then makes a bulk write to a file.
http://httpd.apache.org/docs/2.2/mod/mod_log_config.html
If I have enabled write back cache, wont my ...
0
votes
1answer
230 views
Nginx proxy cache (proxy_pass $request_uri;)
I need to create proxy web using nginx.
If I access http://myweb.com/http://www.target.com/
the proxy_pass should be http://www.target.com/
Here is my configuration:
location / {
proxy_pass ...
-2
votes
1answer
81 views
Can I use Varnish to front 2 different services from different servers on 1 domain? [closed]
I've been futzing around with getting this set up however I don't know if Varnish supports what I am trying to do:
I have a server (ec2) thats running Nginx/Magento for ecommerce (www.domain/)
On ...
0
votes
1answer
58 views
Set “expires” in nginx for multiple vhosts
I use the "apache style" nginx config (include /sites-enabled folder files and a single .conf for every website I host). How can I set this:
location ~* \.(?:ico|css|js|gif|jpe?g|png)$ {
expires 30d;
...
0
votes
1answer
159 views
Nginx fastcgi_cache_path
I'm new to Nginx.
My nginx cache setting in the nginx.conf
fastcgi_cache_path /dev/shm levels=1:2 keys_zone=my-cache:100m inactive=7d;
What is it means? the level, 100m and inactive=7d ?
Thank's ...
2
votes
1answer
99 views
Squid takes 2 minutes to cache a small pdf
We are having a problem that certain pdf from a specific url take a long time to display. Squid seems to use a long time to cache it (over 2 minutes) for 110kb. If I browse this pdf without going ...
