Joomla! Extensions Directory - Query Cache

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Cache

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Query Cache - RC 2			component
Rating 6 votes	Developer:	Anthony Ferrara	Version:	1.0 RC2 (Updated 140 days ago)
	E-mail:	This e-mail address is being protected from spam bots, you need JavaScript enabled to view it	Compatibility:
	Views:	11,615	License:	GPLv2.0
	Favoured:	28	Type:	Non-Commercial
			Date Added:	Oct 3, 2007

Query Cache is here! This component caches MySQL queries before the database even sees them! I've witnessed a site go from 175 queries executed to 21 queries after enabling Query Cache! The best part... It works for ALL users, no matter if they are logged in or not!!! There is no worry that cached data will get stale, because the component monitors write queries, and will clear the cache for tables that have been written to!

Because this system uses memory based caching, you must have one of the following installed on your system to use Query Cache

--APC
--XCache
--Memcached
--File
--Eaccelerator

You can also write your own backend storage method and plug it in!

Note! there are 2 different versions of this component. One for Joomla 1.0, and one for Joomla 1.5. Make sure you use the right version!

WARNING! DOES NOT WORK WITH LEGACY MODE ENABLED! THIS WILL BREAK YOUR SITE IF LEGACY IS ENABLED! You have been warned!

See the FAQ for more info http://www.joomlaperformance.com/component/option,com_easyfaq/task,cat/catid,39/Itemid,7/

NOTE! This component works fine with PageCache! BE AWARE! DO NOT ATTEMPT TO USE PAGECACHE WITH DATABASE CACHING (all others work fine) WITH THIS COMPONENT. You have been warned.

Release Candidate 2 is out. Included are fixes for fatal errors on certain systems, as well as many more "minor" issues.

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User Reviews (2)

Works as advertised! by WebJIVE, January 18, 2008

I was a little skeptical about this component but I decided to give it a go. I used http://webwait.com/ to provide some basic benchmarking which closer resembles what a typical user would see.

I ran the benchmark without the product installed. Next I enabled eAccelerator and ran the bench again. What a difference! I then ran the bench again using the FIle method versus eAccelerator... Guess what? It was just as fast so, if you don't have eAccelerator in your hosted environment, don't worry, this component will still have a big impact especially for heavily queried sites like CB sites which I benched against.

Another bench I ran was turning on the Joomla cache.. Ran the bench again and even more improvements were seen on sites with big images...

I would say install at your own risk but so far, it's working perfect.

This is awesome! by pertorstensson, October 4, 2007

2 of 2 people find this review helpful:

I have tried this out with APC, and it truly does wonders on your CPU load by _vastly_ decreasing the queries to the MySQL database. Mind it is still in a beta stage and not ready for production use, but when it is, I think it will do wonders for a lot of Joomla users with the ability to install APC, Xcache or Memserve on their server(s).

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