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XCache for vBulletin Caching
Version: 0.9.1, by rossco_2005 rossco_2005 is offline
Developer Last Online: May 2013 Show Printable Version Email this Page

Category: Board Optimization - Version: 4.x.x Rating:
Released: 01-30-2012 Last Update: 05-25-2013 Installs: 35
Code Changes Additional Files Is in Beta Stage  
No support by the author.

This mod will replace the default vB_Cache_Db class (database cache) used in vBulletin with an xCache implementation of it.
vBulletin has promised to implement this option themselves, but I'm sick of waiting, so I created this.

What are the benefits of using XCache for caching over MySQL (Database) ?

In theory, quicker page load times, lower server load. This will offload the duty of caching from mysql and throw it into the RAM.
It will also reduce your query count per page.

The most staggering difference you will notice is with the CMS, or any mods that make good use of the cache.
For instance, in my dev site using the default CMS content and settings, browsing as a guest, I was able to shave off an average of 0.06 seconds from the page generation time (0.23 -> 0.17 seconds) and 43 queries (86 -> 43)!
In a live site, the reduction in queries and overall time spent serving the page will have a large effect on overall performance in a busy site.

Make sure that you also have the datastore cache method set to xcache as well for further query reduction: https://www.vbulletin.com/docs/html/datastore
Also install "Load templates from XCache" for further query reduction: https://vborg.vbsupport.ru/showthread.php?t=255994

Any drawbacks?

Other than a file edit required on every vBulletin upgrade, none that I can think of... If you think of one, post it.

What about other data caches ? (memcached, apc, etc.)

I could write those as well, if there is a demand for it, and they happen to work similar enough to xcache.

This is a beta!

This has been tested in a live forum for a few days, and no incidents/side-effects have been noticed or reported, but I cannot yet guarantee it is 100% perfect.

This mod requires one file edit

See this bug to find out why: http://tracker.vbulletin.com/browse/VBIV-13241

Requirements

This was designed to fail gracefully by falling back on the DB cache if there is an error, so if there is an error you will not even realize it.

Make sure these requirements are met:
  • XCache 1.3.2 installed (only version that I tested) (verify by viewing phpinfo page)
The following are in your XCache ini settings (php.ini usually):
  • xcache.var_size = 32M (32MB; at least)
  • xcache.var_slots = 8k (8000; at least)
  • Set xcache.admin.user and xcache.admin.pass to whatever you want (keep in mind that the pass must be MD5'd)

Restart after making any changes.

Another tip is to set your xcache.count and xcache.var_count to the number of CPU cores that you have.

See the documentation here: http://xcache.lighttpd.net/wiki/XcacheIni

After running this mod for a while, check your xcache admin page to ensure that your var_slots and var_size are large enough.

Install Instructions

1. Upload the contents of the UPLOAD folder in xcache.zip to your forum root

2. Open up your /includes/config.php file and add the following:

PHP Code:
/*
 * XCache Config
 */
$config['xcache']['user'] = 'user';
$config['xcache']['pass'] = 'pass'
Edit it to include your xcache admin username and password

3. This step will need to be repeated whenever you do a forum upgrade.
Open up /vb/cache.php.
Find:
PHP Code:
self::$instance vB_Cache_Db::instance(); 
Replace with:
PHP Code:
self::$instance fst_Cache_Xcache::instance(); 

Download Now

File Type: zip xcache-0.9.1.zip (3.7 KB, 150 views)

Show Your Support

  • This modification may not be copied, reproduced or published elsewhere without author's permission.
4 благодарности(ей) от:
FReeSTER, Max Taxable, steviewonder44, tbworld

Comments
  #12  
Old 01-31-2012, 04:54 AM
thecore762 thecore762 is offline
 
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What's the difference between this mod and vBOptimise?
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  #13  
Old 01-31-2012, 09:38 AM
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abdobasha2004 abdobasha2004 is offline
 
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it seems you put lot of effort in this
but I do not know why but I am only convinced by server Header cache and mod expires instead
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  #14  
Old 01-31-2012, 10:12 AM
Robru Robru is offline
 
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Thanks for sharing this!
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  #15  
Old 01-31-2012, 10:20 AM
TheSupportForum TheSupportForum is offline
 
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you also need to ensure that your webhost supports xcache

mine does so for me this mod is useless, only install if your host supports it
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  #16  
Old 01-31-2012, 10:51 AM
sticky sticky is offline
 
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Who is using this and what are the results?

Any compatibility issues with mods or is this seamless?
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  #17  
Old 01-31-2012, 11:12 AM
FReeSTER FReeSTER is offline
 
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well Im using it with vb4.1.7 and I guess I see some improvements on the site but not much. Maybe because my style is base on 90%images. but a bit of improvements here and there makes a change.

thanks
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  #18  
Old 01-31-2012, 01:35 PM
Osbes Osbes is offline
 
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I would also appreciate an APC version of this.
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  #19  
Old 01-31-2012, 03:30 PM
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dorans dorans is offline
 
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Quote:
Originally Posted by Osbes View Post
I would also appreciate an APC version of this.
+1 APC
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  #20  
Old 01-31-2012, 06:21 PM
tarzan22 tarzan22 is offline
 
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please, 4.1.10 ?
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  #21  
Old 01-31-2012, 09:43 PM
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CoZmicShReddeR CoZmicShReddeR is offline
 
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I am using it with 4.1.10 no issues... I run my own dedicated Server Box 2 Quad Core Xeon with 28GB Ram running it with Windows 2008 64 bit server hosting with XAMPP/Apache Friends just downloaded a windows version of XCache works fine... It did speed the load times up about 5% on the CMS home front and about 3% for the forums... Not sure how to tweak it using default settings or suggested settings...
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