The cache tag has no wiki summary.
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4answers
83 views
7.2K Near Line SAS with Large RAID Controller Cache vs 10/15K SAS
I'm working on an application to capture a lot (10 million +) of really small blocks of data (16 bytes) every day. The data is not sequential (i.e lots of seeking about to write) and it's not a ...
3
votes
1answer
145 views
My server doesn't seem to be caching anything well
I have a VPS from tocici (via BuildYourVPS). It's got 4 GB of RAM (2 GB of it "burst" RAM).
This server has some severe performance issues, however. First, a quick explanation of what this server ...
0
votes
1answer
34 views
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 ...
1
vote
1answer
55 views
Persistent web cache?
I'm building nginx cache on a development machine and try to copy the files to a server that has the same nginx cache settings. But nginx is not picking up my copied caches and overwrite my caches.
...
3
votes
1answer
23 views
Deploy a GWT app within IIS 7
I am currently trying to configure an ASP.net Web Application through Web.config, to host a GWT WebApp in a specific folder. I've managed to configure the mimeMap for the .manifest file extension in ...
0
votes
1answer
71 views
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?
...
0
votes
0answers
50 views
MemCache-repcached complie error
I'm trying to install memcached-1.2.8-repcached-2.2.1
http://sourceforge.net/projects/repcached/files/latest/download?source=files
And i have the following error after make command
make ...
4
votes
1answer
108 views
ratelimit POST requests
Im running a large wordpress multiuser site. I have a varnish cache infront of the wordpress application server. As it make no sense to cache POST requests, i am vulnerable to DOS using lots of POST´s ...
3
votes
0answers
116 views
Unexplained cache RAM drops on Linux machine
I run a CentOS 5.7 64 machine with 24gb ram and running kernel 2.6.18-274.12.1.el5.
This machine runs only Nginx, php-fpm and Xcache as extra applications.
Since about 3 weeks my memory behavior on ...
0
votes
1answer
38 views
Cache Appliance for ISP [closed]
We want to invest in a Cache Appliance solution to reduce our bandwidth and improve the user experience.
Which cache appliance do you recommend? So far I have these candidates CacheBOX and CacheMara.
...
1
vote
1answer
40 views
How do I make single page expiration 1 hour CloudFront
I am using CloudFront to distribute content from one of my domains. There is no S3 tie-in here. By default, content expires after 24 hours, which is fine for most of the data on the website, ...
0
votes
1answer
24 views
Connection errors when trying to use Memcache
I'm new to 'Memcache' but I've installed it and I think its' running, so far have I done the following correct?
mkdir memcache
wget http://pecl.php.net/get/memcache-3.0.6.tgz
tar -xvfz ...
0
votes
0answers
19 views
Is it possible to inspect the SSAS data cache in detail?
In light of reading about SSAS internals in Microsoft SQL Server 2008 Analysis Services Unleashed, I'm curious if it's possible to inspect the contents of the SSAS data cache in detail. Theoretically ...
2
votes
2answers
89 views
Supporting js/css/image downgrades with nginx server
I have a requirement where I need to support downgrading of my server code.
I have the following line in my nginx configuration file, indicating that the browser can cache the page but has to ...
-2
votes
4answers
108 views
Does a router cache packets that pass through it?
Just what the title states. A colleague mentioned that it may be possible for a router/gateway to be configured to cache everything that passes it's way (mail, attachments ...)
Say a mail with an ...
0
votes
0answers
32 views
Does libapache-mod-deflate cache compressed result?
I got some json files to be served by apache httpd and their size are pretty big. (~100KiB)
So I put mod_deflate into httpd server and applied to application/javascript mime type.
I think ...
0
votes
2answers
96 views
MySQL consuming nearly all memory in cache?
I am running a server with 24G of RAM. The only thing running here is a MySQL server configured as Master.
When I check the memory via free -m I am getting this:
total used ...
5
votes
1answer
46 views
Backup process flushes disk cache
I've got a backup process which reads quite a lot of data from disk, and therefore uses up all memory for disk cache, swapping off apps and other cached data in the process. There is no benefit to ...
2
votes
2answers
53 views
Nginx cached page returning binary data(.gz file) every now and then. Works when cached folder is deleted
I have an nginx server running as a proxy. A page from it is configured to be cached and served compressed.
But then every now and then it serves the page as .gz file which shows as up a file to be ...
2
votes
1answer
81 views
squid : faster internet but not responsive
I configured my gateway server with squid proxy for my LAN, everything work normally, the browsing maybe faster because of the cache.
but it seems not as responsive as without squid, because when ...
0
votes
1answer
43 views
Can nginx be made to cache upstream responses containing an X-Accel-Redirect header?
I am using nginx as a reverse proxy in front of application server. The application responds with an X-Accel-Redirect header telling nginx which static file to serve. What I'd like to be able to do is ...
1
vote
1answer
62 views
List of hosts in Varnish
I'm running a VPS with multiple different websites, and Varnish in front for caching.
However, some websites should not be cached.
Instead of making individual rules for each website, I would like ...
3
votes
1answer
75 views
Image caching using HTTP_IF_MODIFIED_SINCE
I found that adding
RewriteRule .* - [E=HTTP_IF_MODIFIED_SINCE:%{HTTP:If-Modified-Since}]
RewriteRule .* - [E=HTTP_IF_NONE_MATCH:%{HTTP:If-None-Match}]
To the bottom of my htaccess file (below all ...
1
vote
0answers
155 views
Capistrano deploys break W3 Total Cache minify URL rewriting
I am running WordPress 3.2.1 on Linux on EC2 with Amazon CloudFront. Most of the caching/CDN services are working fine.
However, minify URL rewriting is not working. I get this error in the web ...
1
vote
1answer
85 views
How do I speed up and cache mmap file access over NFS on Linux?
The server and client are both 64-bit Ubuntu 10.04 LTS.
The application in question is a custom app that uses mmap() for fast random file access. Its ideal state is when the entire file is cached in ...
1
vote
1answer
55 views
Chromium audit says it's not caching static content, yet headers are set - who is wrong?
I'm hosting redmine with nginx + thin with static content caching
Question is: is it or is it not cached by the browser?
nginx caching config:
location ~* \.(?:ico|css|js|gif|jpe?g|png)$ {
# ...
0
votes
1answer
31 views
make vfs linux cache more inclined to keep inodes over actual file contents
I am using a centos 5 (2.6.18-194.el5).
I need to be able to list files very quickly, in order for my rsync backup to be efficient.
I don't really need to cache file contents, because file access ...
0
votes
1answer
59 views
What is the maximum file size that will be cached by a browser? [closed]
What is the maximum file size that will be cached by a browser? Note that I don't mean the maximum size of the browser cache. I mean, what is the maximum individual file that will be cached.
If ...
0
votes
1answer
94 views
tuning linux cache settings for inode caching
I am dealing with hundred million files in a filesystem (distributed among a lot of subdirectories), and I need to be able to list them very quickly, particularly in order to rsync them efficiently.
...
1
vote
0answers
109 views
Leverage browser caching on nginx
I am using nginx for my webserver. I am trying to set an expiry date or a maximum age in the HTTP headers for static resources but it doesnt work. This is what i am using;
location ~* ...
2
votes
1answer
42 views
Linux implementation similar to Adaptec Intelligent Hybrid RAID?
I could explain it in my bad english, but looking at this page is the fastest way:
http://www.adaptec.com/en-us/_common/hybrid-raid/
Do you know of any linux implementation for this outstanding ...
0
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0answers
9 views
How to attach/import a cache.dat file into Intersystem cache 2011
I am looking for a way, by which I can attach/import the cache.dat file into intersystem cache 2011 database.
1
vote
2answers
66 views
DNS and correct routing
I registered a domain at GoDaddy and changed the nameservers to my server's. (GoDaddy sets up the domain using their own nameservers initially.) Now, almost 24 hours later, how come when using some ...
0
votes
2answers
146 views
How do I rewrite *.example.com to www.example.com?
In my network, I've some Ubuntu machines which need to download files from nl.archive.ubuntu.com. Since it's quite a waste of time to download everything multiple times, I've setup a squid proxy for ...
0
votes
1answer
330 views
How can I clear the “authentication cache” in Windows 7 to a password protected samba share?
I have a Linux samba server and have explicitly listed users that can access the folder.
I have successfully congfigured Samba to require a username and password when accessing the share from windows ...
3
votes
2answers
115 views
Linux disable disk cache for a single command
Our server is performing decently, but when backups or other scan processes run it will tank the entire server. Something like clamd will run and scan many files. While we expect slow performance, ...
0
votes
1answer
93 views
Good resources for understanding HTTP, Browsing, caching, web server security etc? [closed]
When I ask questions, many of the times, people leave answers like "first learn about this (or that)." The problem is, I don't know if I can find books specifically written on those subjects.
Here ...
3
votes
3answers
129 views
Understanding DNS cache poisoning
I have just read this article on DNS cache poisoning, and while I understand it, am I right in saying that DNS cache poisoning is impossible when the server is behind a router using either an address ...
0
votes
3answers
168 views
Should I increase MySQL cache?
I tried to run tuningprimer.sh to tweak my mysql settings. I already increased mysql query cache few times to current 2GB but it's still not enough according to test results:
> QUERY CACHE Query ...
2
votes
1answer
137 views
Changing server API from CGI to FastCGI
I have a server set up on CentOS and I need to change the API from CGI to FCGI (Someone else set this up initially) for x-cache to work (we need this as we have a TV appearance on monday and are ...
1
vote
1answer
51 views
Varnish debug lurker
I have varnish 3, with apache worker/php-fpm, and drupal 7.
Varnish is using high IO and I suspect this has to do with multiple repeated messages like
0 Debug - "lurker: 0xb7505470 1800 ...
0
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0answers
23 views
In the IE8 / 9 Developer tools, is there any difference between deleting the cache from Dev Tools > Cache > Clear cache and Tools > Internet Options?
I've had a bit of a headache with a user using IE9 who has been seeing a cached version a website I've built for them, rather than the 'actual' version.
On deleting the cache / temp internet files / ...
2
votes
2answers
144 views
Caching huge files with varnish. Is it viable?
I have one server that provides access to some hundreds of files. All of them are really big (some have more than 10GB). These files won't change and are read only, but I'll need to provide access to ...
1
vote
3answers
144 views
APC PHP cache size does not exceed 32MB, even though settings allow for more
I am setting up APC (v 3.1.9) on a high-traffic WordPress installation on CentOS 6.0 64 bit.
I have figured out many of the quirks with APC, but something is still not quite right. No matter what ...
0
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0answers
42 views
CPU L3 cache miss and hit ratio detais
I have a Intel-Xeon X7560 box (Red hat linux OS installed). How can i see the CPU L3 cache miss and hit ratio details ?
0
votes
2answers
58 views
Ubuntu buffer cache freezes on sync
I am not that strong in linux / unix so asking for any help on problem I have. I am running site on amazon ec2. I am running apache tomcat mysql on one large instance 8gb of RAM. Database is quite ...
0
votes
1answer
40 views
MySQL remote cache
We have a website whose database is on a separate machine. Both the application server and the database server are relatively underused, but the network link between them is the bottleneck. The MySQL ...
1
vote
1answer
48 views
Apache2 'caching'/'keeping in memory' a static html page (is there anything to be gained?)
I'm running a site with a popular 99% static html page (1 MB) on Amazon EC2 micro instance which receives around 35,000 pageviews a day. The site is only changing once every 3-4 hours or so and it is ...
1
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0answers
65 views
How to measure dcachesize usage (and reduce it)
I have a VPS running CentOS 5.7 (Final), 32-bit.
Right after boot, when I run # cat /proc/user_beancounters I see that my dcachesize usage is at about 4100000, while my VPS is set up with a limit of ...
2
votes
2answers
105 views
Force block device (NBD) to bypass the buffer cache
I'd like to know if there is a way to force a block device to bypass the linux buffer cache (ie direct IO) and pass the requests directly to the underlying layer. I know one can open a file using ...
