Making dynamic sites scale like static sites

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Wim Godden

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

Technology

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

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

Reverse proxy cache / http accelerator / …

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

$Varnish - ESI ,[object Object],In your article page output : <esi:include src="/news.php"/> In your Varnish config : sub vcl_fetch { if (req.url == "/news.php") { esi; /* Do ESI processing */ set obj.ttl = 2m; } elseif (req.url == "/nav.php") { esi; set obj.ttl = 1m; } elseif …. … . }$

Varnish - what can/can't be cached ? ,[object Object]

Static parts of pages that don't change often (ESI) ,[object Object],[object Object]

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

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

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Making dynamic sites scale like static sites

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

15.

16. Reverse proxy cache / http accelerator / …

17. Caches (parts of) pages in memory

18.

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

20.

21.

22. Images, js, css

23.

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="/news" ttl="5m" /> <esim:include src="/menu" ttl="1h" /> <esim:include src="/top" usesession="1" ttl="1h" />

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

34.

35.

36. No hits for user-specific content

37. Not even for non-specific content

38.

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

40.

41. Not for user-specific content

42.

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

44.

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

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48. Local = faster

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

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53. Stable : Feb 2012

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

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

59. E-mail [email_address]

60.

61.

Making dynamic sites scale like static sites

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