A new Nginx module allows caching of dynamic content through a new ESI implementation, without hitting PHP every time.

1. Making dynamic sites scale like static sites Wim Godden Cu.be Solutions

3. Owner of Cu.be Solutions (http://cu.be)

4. PHP developer since 1997

5. Developer of OpenX

6. Zend Certified Engineer

7. Zend Framework Certified Engineer

8. MySQL Certified Developer

10. System/network engineers ?

11. Managers ?

12. Varnish ?

13. Nginx ?

14. Making dynamic sites scale like static sites (aka "Nginx-PHP on steroids") Wim Godden Cu.be Solutions

16. Reverse proxy cache / http accelerator / …

17. Caches (parts of) pages in memory

19. Nginx usually scales better (but doesn't have VCL)

22. Images, js, css

24. Very large files (it's not a file server !)

25. Requests with Set-Cookie

26. User-specific content

27. ESI -> no caching on user-specific content ? Logged in as : Wim Godden 5 messages TTL = 5min TTL=1h TTL = 0s ?

28. Dynamic content Request Varnish Ideally user X : /top /top request to Apache same user Y : /top /top request to Apache same user X : /top /top request to Apache if unchanged : served from cache user Y : /top /top request to Apache if unchanged : served from cache

29. Coming to Nginx soon... Logged in as : Wim Godden 5 messages NEWS Menu

30. Coming to Nginx soon... <esim:include src=&quot;/news&quot; ttl=&quot;5m&quot; /> <esim:include src=&quot;/menu&quot; ttl=&quot;1h&quot; /> <esim:include src=&quot;/top&quot; usesession=&quot;1&quot; ttl=&quot;1h&quot; />

31. Requesting /page (1 st time) Nginx /page /page

32. Requesting /page ESI subrequests (1 st time) Nginx /menu.php /news.php /top.php ($sessionid$)

33. Requesting /page (next time) Nginx /page /menu.php /news.php /top.php ($sessionid$) /page

36. No hits for user-specific content

37. Not even for non-specific content

39. Do we need TTLs ? Logged in as : Wim Godden 5 messages <esim:include src=&quot;/news&quot; ttl=&quot;5m&quot; /> <esim:include src=&quot;/menu&quot; ttl=&quot;1h&quot; /> <esim:include src=&quot;/top&quot; usesession=&quot;1&quot; ttl=&quot;1h&quot; />

41. Not for user-specific content

43. TTL for user-specific content is required (defaults to 5min)

45. How many Memcache requests ? Logged in as : Wim Godden 5 messages <esim:include src=&quot;/news&quot; ttl=&quot;5m&quot; /> <esim:include src=&quot;/menu&quot; ttl=&quot;1h&quot; /> <esim:include src=&quot;/top&quot; usesession=&quot;1&quot; ttl=&quot;1h&quot; />

48. Local = faster

49. Easier to debug performance issues (esp. with slow script feature)

53. Stable : Feb 2012

57. Web http://techblog.wimgodden.be

58. Slides http://www.slideshare.net/wimg

59. E-mail [email_address]