My own story with go. On these story I share how to migrate a lot of data between two MongoDb servers using GO. Some learns and details that makes all the difference.

1. GoLang:learning
bydoing
Case: Migrating nearly 2 billion documents
@jonatasdp

2. Goisawesome!

3. 2weeks
experience

4. Howitstarts?

5. thechallenge:
migrate~1.8billion
fromamongoserver
toanother

6. WITHOUTSTOP!

7. downtime
migrationø

8. Billionof
documents1.8

9. 200K /MINUTE

10. 1Million /5MIN

11. 20Millions /hour

12. 400Millions /DAY

13. 5daysMIGRATING

14. weeksexperience2
● syntax
● Basics

15. ● Mgo
● TERMUI
● CLI

16. Migrationalgorithm
● Twomongoconnections:<origin>and<destiny>
● <origin>receiverecords
● <destiny>insertrecords
● Whenrecordison<destiny>
● Removefrom<origin>

17. FIRSTTASTE
● STARTWITHOUTTESTS:(
● LEARNINGABOUTREFERENCESVSVARS
● Structsforeverything
● InterfaceComprehension
● GORoutines
● LocksandMutex
● Channels

18. MGOEXAMPLE
Simpleinsert

19. MGOEXAMPLE
IsNotgeneric

20. structs

21. Structs& Interfaces

22. Interface{}

23. "Typecasting"theInterface

24. GOROUTINES

25. nowaitgroup=1.2Mrpm

26. GOROUTINES+waitgroup
= 200krpm

27. StatelessGOROUTINES
Withchannels

28. GOROUTINES+channels

29. Channels

30. Channels

31. STRUCTMETHODS

32. TERMUI

33. TERMUI

34. TERMUI colors

35. CLI
github.com/codegagsta/cli

36. CLIgithub.com/codegagsta/cli

37. CLI

38. WhatIlearned
● simplicity
● naturallyfast
● easytowriteasynccode
● easytomaintain(mongo-migration#1)

39. OPENSOURCE
https://github.com/ResultadosDigitais/mongo-migration

40. Thankyou!
http://shipit.resultadosdigitais.com.br
@jonatasdp
http://ideia.me