optimizing wordpress (wordcamp philly 2011)
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WP ENGINE.com
WordPress Optimization
WordPress Optmization
ben metcalfe | WP Engine@dotBen | ben@wpengine.com
WordCampPhilly 20011
WP ENGINE.com
WordPress Optimization
Why?• Um, why not?• Keep readers/customers happy!• Stay up under heavy load• Save $$$
WP ENGINE.com
WordPress Optimization
Level 1Let’s get the basics out the way :)
WP ENGINE.com
WordPress Optimization
Keep WP up to dateWhy wouldn’t you?
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WordPress Optimization
Caching plugins FTW!!
W3-Total-Cache
also: WPSuperCache, BatCache
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WordPress Optimization
Deactivate unused plugins
+ delete plugins you don’t use at all
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WordPress Optimization
Avoid bad pluginsInclude (but not limited to)• backupwordpress• backwpup• broken-link-checker• dynamic-related-posts• file-commander• google-sitemap-generator• LinkMan (MyReviewPlugin Link Man)• MyRP (MyReviewPlugin)• wp-symposium-alerts
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WordPress Optimization
Review your themeHTML• does it validate?• CSS at the top, JS at the bottom (not inline)
PHP• Any weird code (if it looks bad, it probably is)• file_get_contents() / fgets()
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WordPress Optimization
Is your host slow?
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WordPress Optimization
Level 2
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WordPress Optimization
Offloading (poor-mans CDN)
Serve images via Flickr/etc
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WordPress Optimization
Feedburn your RSS feed
How many requests to your blog are /feed?
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WordPress Optimization
Repair your MySQL DB
Sometimes you need to tidy your room :)
PHPMyAdmin, OptimizeDB, manually
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WordPress Optimization
Load from multiple sub-domains
good:foo1.yourdomain.com, foo2.yourdomain.com
better:foo1.otherdomain.com, foo2.otheromain2.com
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WordPress Optimization
Browser CachingHTTP Cache-Control
Expires headersEntity Tags
(W3-Total-Cache, WPSuperCache)
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WordPress Optimization
Level 3Mostly assumes SSH access
WP ENGINE.com
WordPress Optimization
Log slow MySQL queriesGood HOWTO:
http://hackmysql.com/nontech
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WordPress Optimization
Check site with Profile ToolsWP-Tuner
WPDB Profilinghttp://speed.wpengine.com
YSlow
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WP ENGINE.com
WordPress Optimization
CDNMaxCDN (used @ WP Engine),
Amazon CloudFrontCloudFlare
Use all the time or just ‘emergencies’
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WP ENGINE.com
WordPress Optimization
‘Smush’ your imagesWPSmush.it plugin
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WordPress Optimization
APC/ opcode cachephp-apc + W3-Total-Cache
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WordPress Optimization
Apache optimizationsDisable .htaccess, use httpd.conf
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WordPress Optimization
Dedicated MySQLDB Box
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WordPress Optimization
Level 4Hitting the big time
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WordPress Optimization
Reverse-proxy with nginx
Run Apache on port 8080Cache statics
(good HOWTO on wp-performance.com)
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WordPress Optimization
Varnish cacheIdeally don’t run Varnish on port 80,
Avoid cookie issues
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WordPress Optimization
MemcacheIdeally run Memcache on separate box
Use same datacenter, ideally same subnet
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WordPress Optimization
HyperDBMultiple database servers
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WordPress Optimization
Boss Level
WP ENGINE.com
WordPress OptimizationStatic site on Amazon
S3“Movable Type” Model
100% Static site
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WordPress Optimization
#Fails
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WordPress Optimization
DON’T edit core files!No matter what “performance” benefit
you think it will make!
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WordPress Optimization
Amazon EC2… isn’t a silver bullet
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WordPress Optimization
Q&A
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