Talk about: Software evolution Continuous delivery Design Architecture SOA Fault Tolerance Docker

1. DevOps e nova cultura
Christophe Marchal | Software Architect

2. What is software development?

3. 2 Different profiles

4. Deploy!
Simple App

5. Open a
ticket
Simple App

6. Simple App

7. Success Application

8. Application Grow
Deploy!

9. Application Grow
Too
unstable!

10. Start Some XP Practices
Only commit in trunk
Use of SCM tool
Continuous
Integration
● unit tests #compilation
● integration tests #runtime
● acceptance tests #runtime

11. Continuous Integration
Compilation
Unit Tests
Deploy em
Staging
Integration
Tests
Automatic
Acceptance
Tests
User
Acceptance
Tests

12. Quality Improvement

13. Team and Application Grow
● Time spent merging
● Time spent compiling
● Time spent testing
● Time to put a feature in production
● Application Response time
● Hardware consumption

14. Modularization

15. Move dependency from Compilation
to Runtime

16. New Deploy
Service
Service

17. Success Application

18. Application Grow
I cannot
deploy
separately!
This is safe!
Only 1 line of
code changed
Service Service
Service Service

19. Service
Service
Service
Service
Service
Service dependencies

20. SOA

21. Service Service
Contract
Service
SOA
● Dependency only depends on service
contract
● Service contract has versions
● No branch
Service
Contract
Contract
Service
Contract
Contract
● unit tests #compilation
● contract tests #compilation
● integration tests #runtime
● acceptance tests #runtime
● performance tests #runtime

22. Update Services
I only deploy
1 service
This is safe!
Only 1 line of
code changed
Service
Contract

23. Business Agility

24. Sell Services

25. Release when you want

26. Build team around services
Client
Business
Service
Contract
Service
Contract
Service
Contract

27. Build team around services

28. Every Team as a Lean Startup

29. Number of ticket
Need to
automatize
● unit tests #compilation
● contract tests #compilation
● integration tests #runtime
● acceptance tests #runtime
● performance tests #runtime
● deploy automation tests #infra

30. Continuous Deployment
● Availability
● Rollback
● Data synchronization
● Scalability
● Cost/Benefit

31. Continuous Delivery
Compilation
Unit Tests
Deploy
Staging
Integration
Tests
Automatic
Acceptance
Tests
User
Acceptance
Tests
Stress Test
Deploy
Production

32. Monitor everything

33. Feature Toggle

34. Build once, Deploy everywhere

35. Configuration Management
REST Service
Key Value database
Filesystem
Environment Variable

36. Green/Blue Deploy

37. Canary Deploy

38. Deploy the same way everywhere

39. Virtualization

40. Provisioning
Operation System
Virtual box images

41. Local Machine
Operational System
Operational System Application
Application
Operational System
Application

42. Still not there ...
Production Local Machine

43. Container
Kernel Linux
Docker Repository

44. Scripting

45. Example of Application
OS

46. Connecting to docker containers

47. Play! Packaged as a docker container

48. Running everything

49. Many, many, many services
● discoverability
● job scheduling
● bind containers to physical servers

50. New Ops Operational System

51. Failure everywhere ...

52. Network Failure

53. Is the server dead?

54. Domino Effect

55. Prevention!
Circuit Breaker
Pattern

56. Test On production

57. Thanks for your time!
Christophe Marchal | Software Architect