Most Powerful High Availability / Load Balancing #yapcasia 2012

Transcript

1. Most Powerful High Availability Load Balancing Sep, 29, 2012 YAPC::Asia 2012 @riywo
2. @riywo
3. http://www.publicdomainpictures.net/view-image.php?image=4314&picture=t-shirt-image
6. Talk about.... * Why is this good? * Why is this bad?
7. HALB
8. What?
9. LB Server Server Server Server
10. HA Server Server Server Server ✗ Health Check
11. Same!
12. Where?
13. HA LB Web Web Web Web User
14. HA LB DB DB DB DB Web
15. HA LB API API API API Web
16. Anywhere!
17. How?
18. BIG-IP ServerIron
19. LVS
20. HAProxy
21. mod_proxy
22. nginx
23. ELB
24. MyDNS
25. Pros/Cons
26. Pros Cons H/W Inline (DSR) Powerful Difficult Expensive Proxy Inline (DSR) Easy to use Performance DNS No proxy Performance Difficult
27. Pros Cons H/W Inline (DSR) Powerful Difficult Expensive Proxy Inline (DSR) Easy to use Performance DNS No proxy Performance Difficult
28. DNS
29. No Proxy
30. DNS DB DB DB DB Web 1 2 Weighted-DNS RoundRobin HA LB
31. Cache
32. DNS DB DB DB DB Web 2 Cache 1 3
33. Cache is Difficult
34. DNS DB DB DB DB Web Cache ✗ Health Check
35. DNS DB DB DB DB Web Cache ✗ Health Check Inconsistent
36. Solution
37. Client DNS
38. DNS DB DB DB DB Web ✗ Health Check
39. Too many Health Check
40. DB DB DB DB DNS Web ✗ Health Check DNS Web DNS Web Health CheckHealth Check
41. Solution
42. Eventual Consistent
43. DB DB DB DB DNS Web ✗ DNS Web DNS Web Health Check DNS 2 Async 1
44. How?
45. DB DB DB DB ✗ MyDNS Web Health Check MyDNS 1 2 Replication MyDNS Web MyDNS Web
46. Good Points
47. * Clients know all info * Eventual Consistent * Any Application:)
48. Bad Points
49. * Too much... * Async difficult
50. Join us! * Perl Mongers * Operation Engineers
51. Join us! * Perl Mongers * Operation Engineers * Baseball Players :)
52. Thanks!
53. @riywo blog.riywo.com weblog.riywo.com