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Optimizing WordPress for Performance - WordCamp Houston
The document provides strategies to optimize the performance of WordPress blogs, focusing on front-end performance, caching techniques, and server optimization. Key recommendations include reducing file requests, leveraging browser caching, and using appropriate caching mechanisms like static page caching and opcode caching with various technologies. It also discusses server configurations, such as using NGINX for enhanced speed, and the importance of minimizing file sizes and requests to improve user experience and search engine rankings.
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Optimizing WordPress for Performance - WordCamp Houston
- 1. Optimizing For Performance Make Your WordPress Blog Faster Chris Olbekson http://C3mdigital.com http://Twitter.com/chris_olbekson http://wordpress.org/support/profile/c3mdigital
- 2. Why Performance Matters? •User Experience • Search Engine Rankings • Server Resources / Costs • Digg Slashdot Effect • Clients / Users Will Love You
- 3. 1 Front End Performance 2 Caching WordPress 3 Server Optimization
- 4. Front End Performance BasicConcepts 1. Make Fewer File Requests 2. Progressive Rendering 3. Concurrent Downloads 4. Expires Headers / Browser Caching 5. Reduce File Size With gzip Encoding
- 5. Performance Grading YSlow from Yahoo Use a CDN Make fewer HTTP requests Add Expires headers Compress components with gzip Put CSS at top Put Javascript at bottom Avoid CSS expressions Make JavaScript and CSS external Reduce DNS lookups Minify JavaScript and CSS Avoid URL redirects Configure Etags Make Ajax cacheable Reduce cookie size Use cookie-free domains Do not scale images
- 6. Performance Grading Google Page Speed Parallelize Downloads Across Hostnames Specify image dimensions Leverage browser caching Minify HTML Minify JavaScript Optimize Images Serve Static Content from a cookieless domain Specify a Vary Accecpt- Encoding header Specify a cache validator Remove unused CSS Use efficient CSS selectors
- 7. Front End Performance Lets Start Optimizing 1. Make Fewer File Requests CSS Sprites http://wordcamp-houston.pastebin.com/Lcu93yjj
- 8. Front End Performance Lets Start Optimizing 1. Make Fewer File Requests CSS Sprites http://wordcamp-houston.pastebin.com/VLAYsFGv
- 9. Front End Performance Lets Start Optimizing 1. Make Fewer File Requests CSS Sprites http://spriteme.org/ SpriteMe does all the work for you And renders the changes live in the Browser to verify it worked
- 10. Front End Performance Lets Start Optimizing 1. Make Fewer File Requests CSS Sprites Combine and Minify External JavaScript and CSS W3 Total Cache Does This For You
- 11. Front End Performance Lets Start Optimizing 1. Make Fewer File Requests CSS Sprites Combine and Minify External JavaScript and CSS Death by Share This Social Media buttons
- 12. Front End Performance Lets Start Optimizing CSS Sprites Combine and Minify External JavaScript and CSS Death by Share This Social Media Buttons Improving Social Media Button Performance Embed social media buttons in <iframe>’s to promote progressive rendering http://wordcamp-houston.pastebin.com/YsEfB4hZ
- 13. Front End Performance Lets Start Optimizing Concurrent Downloads CSS at the Top and Js at the Bottom = “The Waterfall Effect” JavaScript in <head> causes the white Page effect Tip: Use Google CDN for jQuery http://wordcamp-houston.pastebin.com/hWegNNeV
- 14. Front End Performance Lets Start Optimizing Leverage Browser Caching with Expires Headers and Public/Proxy Cache Control Headers Enable gzip Compression for Reduced File Sizes = http://wordcamp-houston.pastebin.com/9C8nQNTT
- 15. Caching WordPress Lets Optimize Some More Caching increases performance 10x to 1000x Types of Caching: Static Page Caching Opcode(PHP) & Object Caching with: A.P.C., eAccelerator, X-Cache Memcached Server with PECL Memcache Extension WordPress Transient API
- 16. Caching WordPress Lets Optimize Some More Static Page Caching >> Fast Stores a WordPress page as static HTML Cache can be rebuilt via page loads ->> Good Cache can be rebuilt via WordPress cron job >> Much Better Always server non logged in users a static version of the page
- 17. Caching WordPress Lets Optimize Some More Static Page Caching + Opcode Caching >> Much Faster Best Performance when running PHP as DSO(mod_php) Does not work as well when running mod_fcgid (cPanel) Better with mod_fastcgi Does not work with suPHP
- 18. Caching WordPress Lets Optimize Some More Static Page Caching + Opcode Caching >> Much Faster A.P.C. Caches PHP in-memory key/value store Stable Relatively Easy to Install Easy to Configure Supports WordPress built in Object Caching API Use with Plugins W3-Total Cache >> Fastest Mark Jaquith’s APC Object-Cache Backend Plugin Does not work with Zend Optimizer
- 19. Caching WordPress Lets Optimize Some More Static Page Caching + Opcode Caching >> Much Faster A.P.C. – Compile from Source http://wordcamp-houston.pastebin.com/XTE9Dti5
- 20. Caching WordPress Lets Optimize Some More Static Page Caching + Opcode Caching >> Much Faster eAccelerator Caches PHP in-memory key/value store Stable >>Most Stable Easy to Install Easy to Configure Supports WordPress built in Object Caching API Stopped Supporting Object Cache after version.9.5.3 current version=0.9.6.1 Can be used as a Zend extesion
- 21. Caching WordPress Lets Optimize Some More Static Page Caching + Opcode Caching >> Much Faster X-Cache Caches PHP in-memory key/value store Not as Stable Easy to Install Easy to Configure Supports WordPress built in Object Caching API Harder to Configure
- 22. Caching WordPress Lets Optimize Some More Static Page Caching + Opcode Caching >> Much Faster Memcached + Memcached Server Persist across multiple servers Cache stored in memory Harder to configure Supports WordPress built in Transient API Used across WordPress.com server infrastructure Isn’t effected by web server restarts Works together with Batcache and WordPress Object Cache
- 23. Caching WordPress Lets Optimize Some More Static Page Caching + Opcode Caching >> Much Faster Memcached + WordPress Transient API Transients are small fragments of data that you expect to expire that WordPress stores as cache in MySQL If Memcached is installed WordPress will store the cache in memory
- 24. Caching WordPress Lets Optimize Some More Static Page Caching + Opcode Caching >> Much Faster Memcached + WordPress Transient API Get Twitter status updates and store them as a Transient. You choose when they expire. If Transient is expired automatically returns false. http://wordcamp-houston.pastebin.com/ndWRB0WB
- 25. Server Optimization LAMPStack LEMP Stack Traditional Server environment Alternate Server environment Linux –Apache-MySQL-PHP Linux-NGINX-MySQL-PHP Choose Your Flavor of Linux Arch Linux 2010.05 (i386 and x86_64) CentOS 5.5 (i386 and x86_64) Debian 5.0 (i386 and x86_64) Fedora 13 (i386 and x86_64) Slackware 13.1 (i386 and x86_64) Ubuntu 10.04 LTS (i386 and x86_64) OpenSUSE 11.0 Gentoo 2008.0 (i386 and x86_64)
- 26. Server Optimization LAMP Stack Linux–Apache-MySQL-PHP Apache Web Server •Why are there so many directives? •Why are dynamic vhosts so darned hard? •Hackers Love it!
- 27. Server Optimization LEMP LEAP Stack Insanely Fast WordPress Linux-NGINX (Reverse Proxy)-Apache-PHP Nginx is a lightweight, high-performance Web server/reverse proxy that does one thing really well and that is to serve content at insanely fast speeds. Nginx listens for http connections on port:80 and serves static content directly while passing off the PHP to the Apache backend. Apache vhost must be changed to listen on alternate port.
- 28. Server Optimization LEAP Stack Benchmark Results # ab –n 1000 –c 100 http://mywpsite.com/ 1000 Requests carried out 100 at a time Result: 1712.33 Requests completed per second The Server: XEN VPS w/ Debian Lenny 1000M Ram WordPress Environment: W3-Total Cache using Memcached Object Cache and enhanced disk page cache