memcached

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crea's picture

Do you use Cacherouter Memcached (note the trailing "d") engine ?

Anyone here using Cacherouter Memcached backend (which depends on libmemcached) here ? I don't want to discuss PECL memcached itself, let's just say it's stable enough to be considered on par with memcache.
I'm more interested in Cacherouter Memcached engine code, stability, issues, etc.

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ducdebreme's picture

Performance gain with Memcached on Windows?

I just have tested memcached on Windows/Apache to investigate, if a performance can be expected.
I was very surprised, but it seems that memcached does not perform better than the Drupal built-in DB-Caching mechanism.
I am very curious, if anybody else had different results.

Detailed information follows.

My environment
- Windows XP
- Apache/2.0.61 (Win32)
- PHP Version 5.2.6
- MySQL 5.0.77
- Memcache 1.2.6
All installed on single box.

I have set up two environments with copies of the same DB.

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Jonah Ellison's picture

New module: Authenticated User Page Caching (Authcache)

Authcache offers page caching for logged-in authenticated users. This allows Drupal to load pages in 1-2 milliseconds and take the load off the the database & processor. Please help test this module (the site I was creating this for got axed, but I continued development on this module). Feedback & patches are welcome. This module can be used for anonymous users (it's faster than Drupal core since the database won't be hit), supports the statistics module, and can cache blocks of user-customized content.

Many thanks to Steve Rude for his work on the Cache Router module, which Authcache uses as its caching system.

This is how it works:

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joshk's picture

Towards a Generalized Drupal Object Caching Mechanism

In my never-ending quest for greater Drupal Glory, I've been spending the past year boning up on the various ways to improve site performance and address issues of scalability. Today, doing some noodling with Amazon EC2 instances (and remaining unconvinced about their raw performance as potential master database servers) I had a thought:

What would it take to extend the static node cache in node_load() beyond the individual drupal bootstrap?

Like just about everyone else, I've been loving how much memcached helps speed site performance. It simply rocks, and everyone looking to reduce server load and speed page responses should be looking into it. One of the better things about it is that it can store and return data objects natively, meaning not only are you letting PHP pull something out of a lightning-fast memory cloud, you also don't incur the CPU overhead of having to unserialize() a string into an object or array.

This let me to my thought. If you want a massively scalable interactive drupal site, you need ready access to tons of nodes. Inevitably you will hit the wall with logged-in requests for these from your database. But what if we were able to take the performance boost we get from node_load()'s static cache, and make it work persistently across an entire site, rather than just for one pageload?

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greg.harvey's picture

Memcache options for Drupal 6.x - your opinions please

Hi all,

I initially posted here in the forums, but catch suggested I should post here: http://drupal.org/node/362511

Duplicate content, but here's the post again:

Just throwing this out there. I have been using the Cache Router module to implement Memcache in Drupal 6.x. It says it "refactored" the Memcache API module to include Memcache support, which seems a bit odd. But it works.

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Swampcritter's picture

Split MySQL DB read/write for Drupal 5

I am the back-end engineer/architect working on consolidating a number of production web sites using Drupal 5.11 with the Drupal Memcache API as a base along with the multi-site configuration.

Here's the architecture so far...
- 2-node load balancer front-end (2 Cisco ASA 5510s)
- 4-node web/app servers: RHEL 5 + GFS + Drupal Memcache API + Memcached (Quad Xeon, 8GB Ram each)
- 1-node MySQL 5.x database server with two other MySQL servers in hot stand-by mode (Quad Xeon, 16GB Ram each)
- EMC SAN Storage (1.5TB allocated)

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