Memcached is an in-memory key-value store for small chunks of arbitrary data (strings, objects). It is commonly used as a cache to speed access to frequently used data.

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Memcached Debuging/Server Logs Monitor the Memcached Servers?

I have chat engine which is based on the Memcached variables, putting them into arrays and reading them in other end via jquery, which works fine 95% of the times, however when the server load is ...
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611 views

Is there something like phpMyAdmin for Memcached?

Is there any tool to see the keys/values stored in my memcached instance? I've found simple scripts like this http://snipt.org/xtP, but I get only the keys. Thanks in advance
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295 views

Why should I use a custom built memcached instead of Apple's Xcode version? [closed]

Memcached seems to be preinstalled with Xcode on OS X, according to Apple's documentation. To make sure I'm not hallucinating, I checked Apple's developer tools documentation. Yes, memcached is ...
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1answer
469 views

Response headers in Memcached+Nginx

Is there any way to cache response headers along with the response body in Memcached for use with Nginx?
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3answers
340 views

Does mysql query cache have to be off to use memcached? [closed]

How do you know if memcached is being used? Server has mysql query cache on and I believe it also has memcahced installed, but how do I know if memcached is being used? Thanks!
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1answer
671 views

memcached session handler in php.ini

I have installed memcached and the below code in php.ini works: session.save_handler = memcache session.save_path = "tcp://localhost:11211" but when i try to use the memcached handler.. this is ...
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1answer
275 views

nginx return corrupted data from memcached

On my web site i've made data caching with memcached. It stores fully generated html pages. Next step was to get this data from memcached by nginx and send back to user w\o starting apache process. ...
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1answer
115 views

Memcached - Single parent config, multiple child configs

I am setting up a memcached server in production, and would like the ability to switch between various memory sizes simply by changing out a symlink from one config to another, however I do not want ...
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1answer
375 views

Memcached clustered alternative

I'm looking to replace memcached. We have a LOT of traffic to our central memcached node which I'd like to split. There's only so much trunking networks I can do. My general idea is to install a ...
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1answer
968 views

ifconfig shows Interrupt:21 Memory:f7fe0000-f8000000

Can some one tell me what does this mean: Interrupt:21 Memory:f7fe0000-f8000000 This is showing in output of ifconfig. The issue is i have a service (memcache) which is not responding on the ...
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1answer
412 views

Connect to memcached using PHP on Windows

I have a memcached server (on AWS ElastiCache) and need to connect to it using PHP on Windows (IIS not WAMP). Is this possible? I have found php_memcache.dll but this doesn't appear to work with ...
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2answers
722 views

Apache Server with memcache, varnish and php slow request times

My issue is that these servers are taking rather long for request about 2 seconds on average just to serve files. When we had just one server doing everything it was noticeably faster even with the ...
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1answer
685 views

Forward localhost memcached server on port 12111 to domain.com memcached server

My customers are running many scripts that uses memcached, but all of them are using localhost as a address. My localhost server is now out of RAM, because it's doing many other things like WWW and ...
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1answer
112 views

Should we increase local port range limit on busy memcached servers

nixcraft has a tutorial on configuring memcached server(link) at the end says: For busy memcached server you need to increase system file descriptor and IP port limits here is the code to do ...
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5answers
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Netcat (nc) traditional package for RHEL 6.x?

I'm trying to use the Percona Apache Monitoring [Cacti] Template for Memcached. They do indeed warn that you can't use the openbsd version of the package and provide a solution for Ubuntu/Debian ...
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1answer
398 views

is anyway to use memcached with nginx on a post request?

2.1, i am also using the amazon elastic cache service (its a memcached server) Nginx has a clever feature that uses memcached for common get request, but if is a post request dont use memcached, is ...
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2answers
3k views

PHP on several servers with session-sharing

there's certanly other threads about this, but I have one more question. We are about to scale the website at work to have more than one server. And we need to share the sessions between the servers. ...
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1answer
518 views

Nginx , Apache , Mysql , Memcache with server 4G ram. How optimize to enought memory?

i have 1 dedicated server with Nginx proxy for Apache. Memcache, mysql, 4G Ram. These day, my visitor on my site wasn't increased, but my server get overload always in some specified time. (9AM - ...
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3answers
3k views

Unexpected(?) high 'wasted' memory in memcached

Updated, see bottom of the longish (sorry) question. Looking at our memcached stats I think I have found an issue I was not aware of before. It seems that we have a strangely high amount of wasted ...
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1answer
137 views

Memcached memory consumption?

Server info: cPanel / 4GB The conf file as below: #Memory a user -m 128 # default port -p 11211 # user to run daemon nobody/apache/www-data -u nobody # only listen locally -l 127.0.0.1 Does it ...
3
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1answer
124 views

Nginx with Memcached module

I'm running Wordpress website with "W3 Total cache plugin" for Memcached on Nginx. I know that there is a Nginx module available for Memcached and I'm wondering what's the preferred/recommended method ...
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1answer
531 views

Nginx, PHP-FPM and Memcached

I have Wordpress installation running on two web servers powered by Nginx. I configured Memcached on both servers and I'm using W3 total cache plugin for Memcached: What's the recommended solution ...
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1answer
250 views

Does a RewriteCond that checks for the existence of a file cause high IO latency?

I am setting up an apache configuration to check for the existence of a file. If the file exists, then the server will redirect to a maintenance page. If not, the application will get served up ...
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3answers
283 views

Memcached Lagging

Let me preface this by saying that this is a followup question to this topic. That was "solved" by switching from Solaris (SmartOS) to Ubuntu for the memcached server. Now we've multiplied load by ...
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2answers
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Troubles with memcache.so

I've been asked to launch a site that someone else built. It is a Wordpress shop site that needs Memcached to run, and I've been having troubles getting Memcached and the memcache php plugin working ...
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1answer
4k views

error while installing the libmemcached

I get this while installing libmemcached root@server [/libmemcached]# make make all-am make[1]: Entering directory `/libmemcached' if /bin/sh ./libtool --tag=CXX --mode=compile g++ -DHAVE_CONFIG_H ...
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1answer
140 views

difference between slab, page and chunk in memcached

what is the difference between slab, page and chunk in memcached? If we set -m 128, then how many slab, page, chunk we have? What is the benefit of slab?
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1answer
101 views

MediaWiki Multi Site + Memcached

I have multiple mediawiki installations, and I'm wondering if it's safe to allow them to all use the same memcached server. Are there any "gotchas" involved?
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3answers
1k views

What would cause Memcached to Hang for 2+ seconds?

I'm going nuts trying to scale memcached. From their site: Memcached operations are almost all O(1). Connecting to it and issuing a get or stat command should never lag. If connecting lags, you ...
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0answers
235 views

Enyim Memcached Client Caching same item on multiple servers

We have a memecached cluster of 5 servers. When we reviewed the cache keys it shows that the same item is showing up across 4-5 servers in the cluster. As I understand it, Enyim's default key hash ...
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1answer
269 views

Memcached logrotate file not being installed. Bug with memcached 1.4.2?

My memcached logs are getting huge (in excess of 5GB). This isn't a huge problem in itself. I can easily remove them. I've sourced the problem to the memcached 1.4.2 package not installing a ...
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1answer
98 views

Server performance worsened after a hardware upgrade: how should I reconfigure the server? [closed]

I'm running a site on an Ubuntu/Apache/Django/PostgreSQL stack. We upgraded our server recently from 1 processor with 2 Gb total RAM (with 0.5 Gb of that RAM assigned to memcached) to a new server ...
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1answer
174 views

Can a slow database cause a web app to hold up a memcache connection?

I have a php application that uses memcache and a back-end database At times we see high "current connections" in memcache and can't determine why. Why php "misses" from memcache and needs to go ...
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1answer
233 views

how can I effect DNS Caching on PHP/Memcache application

In a very high loaded Ubuntu/PHP web server I found that the PHP line: $memcache->connect("int-aws_ec2.memcached.myapp.net",11211); sometimes takes ~5 secs. Replacing the url with the ip address ...
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1answer
383 views

How does php know what memcached node to look for its data in?

I am new to the world of Memcached clusters If I have a php web application that is using memcache - how does it does its hash and decide what node to check for a particular value to avoid having to ...
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1answer
162 views

Memcached on same servers as websites

I have a website that runs on 4 loadbalanced servers. These are Windows servers, each with 16 GB of memory. I need to move to a shared cache, so I was thinking of Memcached. However, budgetary reasons ...
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1answer
157 views

How to use Memcached

I read a bit about memcached but struggling to understand how exactly we use it. Is it a kind of server/application that we have to install on our machine? Is it a script that we have to include in ...
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1answer
285 views

Memcached and Django - When Ajax action is performed, ALL css and js is missing

I've got Django running and caching into Memcached. I have some ajax actions on a page and when those actions are performed, and the browser refreshd, the CSS and JS files are no where to be found. ...
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Memcached and repcached not replicating 2 master servers

I have memcached-1.2.8-repcached-2.2 installed on memcached on centos. They install went great and when i start memcached i get: replication: connect (peer=192.168.1.2:11212) replication: marugoto ...
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1answer
8k views

nginx with Memcache Vs Varnish

I was wondering if anyone has any comments / benchmarks / suggestions on Varnish Vs Memcache when used to serve content (usually 2-5kb JS file depending on the parameters in request; thousands of diff ...
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2answers
2k views

Memcached and php error

I have install memcached and when I try a script test like this one : $memcache = new Memcache; $memcache->connect('127.0.0.1', 11211); echo $memcache->getVersion(); I recive the nest error : ...
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2answers
821 views

Timeouts somewhere on our stack (haproxy, nginx, rails, memcached)

We have some timeouts that are driving me crazy, under virtually no load (probably a couple people hitting the servers per minute). We use nginx to redirect non-SSL to SSL, terminate the SSL, and ...
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1answer
1k views

Optimizing Web Server(apache2+nginx+memcached+eaccelerator) for high-loaded heavy application

I have a server with (Apache2 + nginx as reverse proxy, memcached cache and eaccelerator). The application is Magento - it is very heavy, due to high modularity and a lot of php files(5000-10000+). ...
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6answers
2k views

Dividing memcached between sites?

If I end up having 4 or 5 medium sites on one server, I want to be sure that each one that requires memcached has at least an allotted space. Is there a simple way to do this? The only ways that come ...
3
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3answers
2k views

memcached not restarting properly start-stop-daemon: warning: failed to kill 8175: No such process

im having some really weird and annoying issue with memcached. im running ubuntu server 10.04lts on a linode instance. i am using fabric with a django project and part of the fabric script allows the ...
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1answer
75 views

Should memcached be installed before or after cpanel?

I want to install memcached. I want to know if I should install cpanel first, or after the memcached installation
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repcached broken sync - memcached high avalaibility

I have been using repcached (memcached-1.2.8-repcached-2.2)to store php sessions in order to have a highly available memcached. Everything runs perfect, I can restart a daemon without losing sessions. ...
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1answer
160 views

Tips setting up nginx as proxy for php and node frameworks

We have a current, soon-to-be legacy PHP app installed in production, served with apache. Working fine. Currently trying to add in new Node.js alpha stack, which we're planning to install alongside ...
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1answer
1k 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? ...
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1answer
529 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 ...