1. Mark Jaquith
Making
WordPress
“JAKE-with”
@markjaquith Go “Vroom”
mark@jaquith.me
markjaquith.com

2. Survey

3. MATH TIME
50k pages/day = 0.58 pages/second
Uh... that’s it?

4. Traffic isn’t
steady

5. Speed
Ma ers

6. Scaling
a Single Server

7. Apache

8. nginx

9. proxy to Apache
or
PHP-FPM

10. PHP
Opcode
Cache

11. WP
Object
Cache

12. HTML
Output
Cache
Batcache || W3 Total Cache || WP Super Cache

13. Nginx
Microcache

14. Fragment
Caching
if ( $html = get_transient( 'expensive-html-chunk' ) ) {
echo $html;
} else {
$html = dynamically_generate_foo();
set_transient( 'expensive-html-chunk', $html, 3600 );
echo $html;
}

15. TLC
Transients
echo tlc_transient( 'example-feed' )
->updates_with( 'my_callback' )
->expires_in( 300 )
->background_only()
->get();

16. MySQL
Query Cache

17. CDN
— with —
Origin Pull

18. Guideline:
1000ms+ — Really slow
350–999ms — Slow
250–349ms — Okay
100–249ms — Fast
0–99ms — ZOMG FAST

19. The
Optimization
Cycle

20. Dead-simple bo leneck
identification
<!--timer: <?php timer_stop(true) ?>-->

21. Case Study
havebabyneedstuff.com

22. Nginx
caching

23. Proactive
purging

24. Result?

25. $ ab -c 350 -n 5000 http://havebabyneedstuff.com/
Result?
Requests per second: 8114.53 [#/sec] (mean)
95% of requests served within 40ms
99% of requests served within 82ms

26. Multiple
Servers

27. Load
Balancing

28. Sharing
Uploads

29. Memcached

30. Rinse &
Repeat

31. HyperDB

32. Mark Jaquith
“JAKE-with” Thanks!
@markjaquith
mark@jaquith.me
markjaquith.com