Scaling WordPress

WordPress is powering some of the biggest publishing sites on the web (CNN.com, techcrunch.com, wired.com). It's no accident that one of best CMSes on the web is chosen to be the publishing platform of choice by these content providers. That said, each of these companies have had to work hard to push the limits of the software to scale to meet the needs of their enormous audiences. In my talk, I will discuss the essential ingredients needed for scaling WordPress to millions of users. This talk will include discussion of integrating external services and technologies along with performant PHP practices to provide a stable publishing experience for the masses.

Transcript

1. SCALING WORDPRESS with Zack Tollman
3. Slashdot effect Digg effect Reddit effect Farked Drudged
4. Dinner
5. Celebration
6. Phone rings
7. Not at dinner
8. https://flic.kr/p/pLarbf
9. Triage approach to scaling
10. Stabilize
11. Diagnose
12. Treat
13. Prevent
14. PAGE CACHING Stabilize with
15. WordPress as a Static Site https://flic.kr/p/6bun5f
16. https://medium.com/message/how-paper-magazines-web-engineers-scaled-kim-kardashians-back-end-sfw-6367f8d37688 #breaktheinternet
17. Reduce Site Load
18. Batcache
19. Varnish
20. Edge Caching
21. Tips Low TTL to avoid invalidation pains
22. EXPERIENCE & TOOLS Diagnose with
23. Database Queries
24. Remote Requests
25. Slow Methods
26. Query Monitor
27. Query Monitor
28. XHProf/XDebug
29. New Relic
30. OBJECT CACHING Treat with
31. https://flic.kr/p/bxuzPB
32. WP_Object_Cache tollmanz.com/grokking-the- wp-object-cache/
33. Memcached github.com/tollmanz/ wordpress-pecl-memcached- object-cache
34. APC wordpress.org/plugins/apc/
35. WordPress core uses object caching
36. wp_cache_set
37. wp_cache_get
38. $args = array(
 'number' => 5,
 'username' => 'tollmanz',
 'include_rts' => false,
 );
 
 $key = md5( $args );
 $group = 'tweets';
 
 $tweets = wp_cache_get( $key, $group );
 
 if ( false === $tweets ) {
 $tweets = get_tweets( $args );
 wp_cache_set( $key, $tweets, $group, 600 );
 }
39. On Demand
44. Proactive
45. Proactive On save
46. Proactive On scheduled event
47. Stale While Revalidate github.com/markjaquith/ WP-TLC-Transients
48. Stale While Revalidate Liveblog
49. A SOLID STACK Prevent with
50. Edge Network
51. Edge Network Load Balancer
52. Edge Network Load Balancer Varnish Varnish
53. Edge Network Load Balancer Varnish Varnish WEB WEB WEB WEB
54. Edge Network Load Balancer Varnish Varnish WEB WEB WEB ADMIN
55. Edge Network Load Balancer Varnish Varnish WEB WEB WEB ADMIN DB MEM DB MEM
56. Object cache + Page cache ——————— Happy life
57. Zack Tollman @tollmanz tollmanz.com/mwphp15