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Codebits Handivi
- 1. Technology in a startup @ 7syntax Celso Pinto Coder, headbanger, biker and founder
- 3. Then: 2 + 1 idea
- 4. Now: a 5 men army
- 5. Fighting the evil empire!
- 6. with
- 7. A tech startup lives by it's tech
- 8. TECH FAIL
- 9. From the very back end... http://flickr.com/photos/your_teacher/133262843/
- 10. Question time!
- 11. So, about data storage
- 12. Relational is dead... to me! ✔ Fast key based access ✔ Cheetah-fast list fetches ✔ Prefer to search with Lucene
- 13. Cheetah fast reads ✔ Fast key based access ✔ Cheetah-fast list fetches ✔ Prefer to search with Lucene
- 14. Stuff I actually considered ✔ Standard mailboxes, accessible via POP/SMTP
- 15. Stuff I actually considered ✔ Standard mailboxes, accessible via POP/SMTP ✔ Fixed block files
- 16. Stuff I actually considered ✔ Standard mailboxes, accessible via POP/SMTP ✔ Fixed block files ✔ MogileFS (plus Lucene for complete indexing)
- 17. But then...
- 18. Any day now
- 19. What we get from CouchDB ✔ Easy sharding ✔ Incredibly fast reads, faster than cheetahs! ✔ Develop views in a(ny) familiar language ✔ One instance can handle 500.000 databases ✔ Each database can easily store millions of records ✔ Online backups/snapshots and compaction
- 20. CouchDB has warts too :-( ✔ It's a “tad” slow on inserts ✔ 50 inserts per second ✔ We can push it to 500 by dropping fsync's and using tmpfs But it doesn't matter: we <3 CouchDB!
- 21. Any questions so far?
- 25. No!
- 26. No!
- 28. The Snake * you need Acme::Python to understand this Hisssssssssssssssss Hiss hiss Hiss hiss Hissss hiss Hisss hisss Hissss hiss Hiss hiss Hiss hisss Hisss hisssssss Hiss hisss Hiss hissssss Hiss hiss Hisss hissss Hisss hiss Hiss hiss Hisss hiss Hisss hiss Hiss hiss Hiss hisss Hisss hisss Hiss hiss Hissss hissss Hiss hiss Hissss hisssssss Hiss hiss Hiss hiss Hiss hisss Hisssss hissss Hiss hiss Hissss hisssss Hiss hiss Hisss hiss Hisssss hiss Hisss hisss Hissss hiss Hisss hiss Hisss hiss Hissss hissssssss Hiss hisssssss Hissss hisss Hiss hisss Hissss hiss Hiss hisss Hiss hiss Hisss hisss Hissss hiss Hisss hissss Hiss hiss Hissss hisssssss Hiss hissss Hiss hissss Hiss hisss Hisss hissss Hisss hiss Hiss hisssss Hisss hisss Hissss hiss Hisss hisssssss Hiss hisss Hisss hissss Hiss hisss Hiss hissssss Hiss hisss Hissss hiss Hisss hiss Hiss hisss Hiss hiss Hisss hissss Hiss hiss Hissss hiss Hiss hisssss Hisss hisssssss Hiss hissss Hiss hisss Hissss hiss Hiss hiss Hiss hiss Hissss hisss Hissss hiss Hisss hisssssss Hiss hisssss Hisss hisss Hiss hiss Hiss hisss Hiss hiss Hisss hisss Hissss hiss Hisss hiss Hiss hiss Hiss hiss Hissss hisssss Hisssss hiss Hisssssss hissss Hiss hissss Hiss hisss Hisss hiss Hissss hissss Hiss hiss Hiss hisssss
- 29. Only one restriction 4 space indents But you should be doing that already!
- 30. Other advantages Here we have Python Some other language
- 31. After one year Still Python Some other language
- 32. On the mobile
- 33. On the mobile
- 34. On the web front
- 35. On the web front
- 36. Any questions?
- 38. Siza Vieira
- 39. The blue pill
- 40. Why Django? ✔ Modular: we can replace have replaced many parts ✔ Stable/solid: impressive # of tests, great docs! ✔ Easily hackable: it's Python after all
- 41. No, seriously...
- 42. Alright, you win
- 43. What we replaced ✔ Auth: we built our own from the start ✔ Sessions: in-house developed stateless sessions ✔ ORM: now on it's way to meet the dodo! ✔ By extension: we never got the chance to use the admin application
- 44. What we're keeping ✔ Templates: inheritance is great! ✔ Request handling/routing rules engine ✔ Forms: lots of validation there ✔ … other bits I can't really remember
- 45. How we're using Django
- 46. Any questions about Django?
- 47. Messaging
- 48. Why is it important to us? ✔ Throttling, balancing, loose coupling ✔ We can tap into any queues and experiment ✔ Remember CouchDB? MQ is the MDA for each “mailbox”
- 49. Lots of good stuff out there
- 50. Our choice ✔ ActiveMQ: stable, small and fast enough ✔ Many protocols: we chose STOMP, nice to debug ✔ Had to create AsyncIO Python lib
- 51. Final bits on messaging ✔ Does MDB mean anything to you? ✔ Python has no MDB container, had to create one ✔ Python + processing (new in Python 3000): ✔ Configuration similar to Django's ✔ 1 process => 1 destination consumer
- 52. Any questions about messaging?
- 53. Wrapping up
- 54. Current architecture mobile web ? perlbal API static Ct. adapter (django apps) writes reads S3 consumers CouchDB accounts User 1 User 2 User n
- 56. Thank you very much! Celso Pinto // cpinto@7syntax.com