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

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-3
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0answers
10 views

linux centos cache memory increasing drastically [on hold]

We are using centos on server side. But unfortunately we are getting issue like cache memory increasing drastically. Please let me know how to overcome it. Thanks in advance.
0
votes
0answers
15 views

How to disable cache of Apache Front of my Tomcat?

I put it at the end of httpd.conf and nothing changed: #Initialize mod_rewrite RewriteEngine On <FilesMatch "\.(html|htm|js|css)$"> FileETag None <ifModule mod_headers.c> Header unset ...
-1
votes
1answer
19 views

Optimizing a small VPS for best Joomla performance

I'm trying to optimize for the best possible speed. My set-up is: -VPS with SSD, 1GB RAM and dual core -LAMP with apache 2.2, php 5.6 and mysql 5.5 on centos 6.7 -Opcache and memcached installed ...
1
vote
0answers
17 views
+50

controlling access while caching video content on-site on client's network

we have many hours of video training courses that we want to deliver on-site to clients with encryption or something to control access Currently , we offer via website (eg like udacity), but some ...
1
vote
2answers
42 views

nginx not caching wordpress site

I have a website set up to use nginx caching. Here are the details: fastcgi_cache_path /etc/nginx/cache levels=1:2 keys_zone=MYAPP:100m inactive=60m; fastcgi_cache_key ...
0
votes
0answers
33 views

Hardware raid, LVM and KVM cache policy

I have a question about right cache policy for KVM using LVM and hardware raid-controller. So from the bottom: 1. We have LSI RAID controller 9260, 512Mb cache and BBU. Later we also will have ...
0
votes
0answers
10 views

Varnish configuration advise

I am having a few issues with my VPS. Something happened on it which my hosts are unsure of and so I am having to go through an ordeal to try and reconfigure a few things. One of those things are ...
1
vote
2answers
42 views

Nginx cache invalidation only works if invoked from the same domain

I am using FRiCKLE's ngx_cache_purge module to invalidate proxy caches. I ran into a problem of not being able to purge caches when accessing the invalidation url with a different HOST part of url ...
1
vote
1answer
42 views

Is there a way to limit the “buffer” memory use in Linux?

I'd like to limit a Linux server's assignment of RAM into the disk cache buffer and instead leave it idle. (CentOS 5 if it matters). I know it's ideal to be using every drop of physical RAM available ...
5
votes
2answers
160 views

nginx use proxy cache if backend is down

I need to nginx proxy use cache if backend server down: this is my configuration. but seems be nginx use cache without check backend server. http { # ... proxy_set_header Host $host; ...
0
votes
0answers
10 views

nginx proxy_cache store callback - store cache keys in mysql

I have multiple servers with nginx installed on them. We would like to cache large static content (> 1gb) on our nginx servers which is fetched from a remote storage server. We are trying to set up a ...
0
votes
0answers
3 views

Windows caches 403 machine-wide? [migrated]

In all honesty, I have no idea how to formulate this question, it's the weirdest thing I've ever encountered. When developing a website on an external VPS and I encounter on my desktop a 403 or 404 ...
0
votes
1answer
20 views

404 header error instead of the correct 200

I have just updated a (dynamic) website by sftp/ssh and all the new pages have been considered as 404 error not found. Actually, all the pages, including the old pages which was overwritten. Also, ...
3
votes
1answer
191 views

Reduce writes from a specific application?

I'm logging the output of a command with command | tee file This causes tee to actually write to the disk every second or so. I'd like to reduce the frequency of the writes, by caching the output ...
0
votes
0answers
11 views

CloudFlare not caching vBulletin php page serving image content

I have signed up with CloudFlare and while it seems to work for some pages I cannot get a rule to work correctly with php pages serving images. The page in question is: ...
0
votes
0answers
7 views

IIS Image Cache Directives Cause 500.19 Error

I wanted to add cache header to browser on IIS. I found this: http://stackoverflow.com/questions/10653549/iis-7-5-and-images-not-being-cached <staticContent> <clientCache ...
-1
votes
1answer
19 views

Why is my nginx reverse-proxy not caching anything?

I'm following this sample configuration from the Nginx docx. Reverse-proxying works fine except that it isn't caching results. Here is my nginx.conf: user http http; worker_processes 1; events { ...
1
vote
0answers
19 views

Squid reverse proxy not able to cache

Not able to cache anything with squid reverse proxy, running in centOS6.5 squid.conf http_port 81 accel defaultsite=example.com:8080 no-vhost cache_peer example.com.ip.address parent 8080 0 ...
-1
votes
1answer
25 views

Disable caching in IIS 7.5? [closed]

I'm using IIS 7.5 (full version) on Windows 7 to run PHP \ ASP websites as a development machine and I can't find any way to stop it from caching the static pages of my sites (particularly, the CSS ...
1
vote
0answers
19 views

ESX 6 arp fails in back 2 back link

we are having a strange problem with back 2 back connection between an ESX 6 and CentOS 7 machine. Hoping to find a solution on stackoverflow The story is below: - we are using a CentOS 7 directly ...
0
votes
0answers
25 views

Disable nginx fastcgi_cache when disk is full

When there is no disk space, nginx is still able to work correctly. It can serve static files, and it can pass the request to a fastcgi server (such as PHP), and it can serve the dynamic response to ...
0
votes
1answer
20 views

IOmeter: Avoid caching and Raw Devices

When testing IOmeter I know always need to be avoid hitting the cache if the logical drive with the OS is testing, some I have some question about it: Do I need to avoid the memory on the controller ...
0
votes
0answers
13 views

NFS vs AFS cache validation

NFS clients revalidate cache blocks on access by evaluating T-Tc < t. If this fails it sends a getattr call to the NFS server asking for the last Tmodified stamp of the relevant file. AFS ...
1
vote
2answers
41 views

DNS caching policy on too many records

We all know that when I ask for some hostname I connect to my DNS server, which checks if it has its corresponding record in cache, and if not it recurs, if necessary, up to the authoritative DNS for ...
1
vote
0answers
19 views

nginx proxy cache configuration for user authentication web application

I have a web application in node + express + passport + mongo database + ejs and single application is configured to handle all the sub-domains. I'm using nginx as proxy server, I need to and must use ...
0
votes
0answers
26 views

Cache domain GET requests using Squid

I'm trying to cache requests to remote package repository, so I can access it without internet connection. All calls are via http GET to remote repo. iptables entry to redirect requests to proxy ...
3
votes
1answer
39 views

ubuntu 14.04 Apache 2.4.7 mpm_event Files and FilesMatch not working

We recently switched our Apache 2.4.7 mode from mpm_pre-fork to mpm_event. Since then we haven't been able to get our Files directive to work. <Files "*.php"> Header set Cache-Control ...
0
votes
0answers
13 views

Nginx: Reasonable values for server_names_hash_max_size and server_names_hash_bucket_size [duplicate]

After adding a number of vhosts with a big number of server names I'm getting /etc/init.d/nginx reload * Checking nginx' configuration ... nginx: [warn] could not build optimal server_names_hash, ...
1
vote
0answers
25 views

NGINX not caching content

I hope anyone can throw a bit of light in here since I'm stuck in the dark :-P Basically, I'm trying to make a Reverse Proxy NGINX cache content. Reverse proxying works OK, but the caching part... ...
0
votes
0answers
46 views

NGINX Stale cache not working for FF or IE (works on Chrome)

Any ideas why stale content is not displaying on FF or IE? The browsers simply produce 504 errors when the origin server is down. Chrome works fine and displays stale cache. Config is below: ...
0
votes
1answer
11 views

Log access to cached content by 3rd party

The question is pretty much the same as this one: How to log a request to apache access log if it's cached by Varnish but instead of varnish let's say I am using CloudFlare. Is there any way to ...
0
votes
0answers
6 views

nginx cache files request on specific url

I have php web app with nginx as reverse proxy and apache 2.4 on the backend. My web app serves the request for images from a particular url like ...
0
votes
1answer
42 views

Squid never caching files using dnf

I'm attempting to set up a local repository cache for dnf. The idea is for one machine on the network to download a package, then any other machine on the network attempting to acquire the package ...
0
votes
0answers
8 views

Is it possbile to cache pdf documents on the netscaler?

I have a file server which gets pretty overloaded quickly because it is serving huge pdf documents. I have a netscaler in my enviroment as well, and I was thinking of caching them in some way on the ...
-1
votes
1answer
45 views

DIG returns different result from different servers [closed]

Yesterday, one of my domain names expired, so one of my websites was down. I'm well aware of dns caching, but I think there is something I miss. My website was not down everywhere (thanks to dns ...
0
votes
0answers
37 views

NGINX Reverse Proxy Cache

I'm trying to create a website failover solution utilizing NGINX as a caching reverse proxy. The reverse proxy is the main A record. I'd like it to constantly serve cache, and display stale cache in ...
-2
votes
1answer
23 views

How can I reduce the Cache usage of MySQL and raise the free memory?

I currently have a virtual server with 12 GB of RAM and 8 CPU running many websites with Apache and MySQL. When looking in PhpMyAdmin monitor, I see the following resource usage graph: image -> ...
3
votes
2answers
83 views

LVM Raid 1 + SSD Caching

I have three disks: /dev/sda slow hdd /dev/sdb slow hdd /dev/sdc fast ssd /dev/vg0 volume group consisting /dev/sd{a,b,c} Each logical volume (lv) should be raid1 mirrored and ssd cached. With ...
0
votes
1answer
19 views

Clearing cached memory of uploaded file

On my system, I have a log file that is being rotated and uploaded every hour. This file is heavy on writes and only needs to be read when rotated and uploaded. The cached memory on my system is ...
0
votes
0answers
24 views

c3p0 commit is always called even if queries are not executed(data is coming from Ehcache)

I have a web service which makes readonly call(bunch of select queries) to get data from DB. But it makes call to the database for the first time only, after that, all entities involved are cached in ...
0
votes
0answers
45 views

Nginx Cache alterntive where two requests can populate large cache files simultaneously?

I am using Nginx as a caching reverse proxy for large files. It is important to me that the origin server does not have to output more bandwidth than necessary. So if the download of the file gets ...
0
votes
0answers
35 views

Hyper-V cluster don't want to use CSV cache

I'm trying to use CSV cache on a Windows 2012 R2 hyper-v cluster, seems easy theoretically. I've got 5 hyper-v hosts, a volume shared on a storage array. I setted up the value with ...
1
vote
0answers
45 views

How to increase the amount of memory used for caching on 32 bit Linux?

I have a server with 64 GiB RAM running 32 bit Debian GNU/Linux v7.9: # uname -a Linux srv1 3.2.0-4-686-pae #1 SMP Debian 3.2.68-1+deb7u5 i686 GNU/Linux # free -m total used ...
-1
votes
1answer
48 views

What's the best way to cache a website on ngix server with SSL?

I have a wordpress blog which runs using nginx (SSL) + PHP-FPM + MySQL. I wondered what was the best way to cache this kind of site. I heard that Pound and Varnish do that well, but I haven't found ...
0
votes
0answers
53 views

When to use or not to use sendfile on/off in nginx?

We have this setting in our nginx.conf for quite a while. sendfile on; When we have updated a file e.g. /js/main.js and access from browser https://test.com/js/main.js?newrandomtimestamp, it will ...
1
vote
1answer
29 views

Authenticate domain user to a domain computer when the computer is not connected to the network?

Our organization sends people to remote locations for periods of 45-90 days. The users at these locations need to use client software on a domain computer in order to do there job. Recently we had an ...
4
votes
2answers
94 views

OpenLDAP proxy cache not retrieving entries

I need to set up a local LDAP proxy cache which connects to our central Active Directory server. OpenLDAP Proxy Cache looks just like the thing. But following the manpages as closely as possible, I am ...
1
vote
1answer
41 views

Caching large files transparently over HTTP

I have a rather peculiar server set up to work with: I have files stored on an HTTP accessible server (Windows Azure Storage - about 800gb of content) but must serve them to people from a different ...
0
votes
1answer
67 views

Where Does /var/lib/nginx/proxy Come From?

I have a server configured to proxy by setting: proxy_cache_path /var/lib/nginx/cache levels=1:2 keys_zone=backcache:8m max_size=20g inactive=7d; proxy_cache_key ...
3
votes
2answers
52 views

Nginx as a caching proxy: Trying a second upstream if first returns 404

For using nginx as a caching proxy, is there a way to configure 2 upstream servers in a way that it always tries the first one unless that one returns a 404, and only in that case it will try the ...