1. MICROSERVICES
Rouan Wilsenach
@rouanw
H o w t o b e g i n u s i n g

2. 2
“I love those little
things!”
Anonymous microservices fan

3. WHAT ?

4. 4
What it’s not: The monolith

5. 5
“Microservices are small,
autonomous services that
work together.”
Sam Newman

6. WHY ?

7. 7
Do one thing well

8. 8
The right tool for the job

9. 9
Easier to replace
“Let's face it, all we are doing is
writing tomorrow's legacy software”
Martin Fowler
http://martinfowler.com/bliki/StranglerApplication.html

10. 10
Less risky to try new technologies

11. 11
Easier to introduce new practices

12. 12
Resilience

13. 13
Independent scaling

14. 14
Less baggage, more trips

15. 15
Composability

16. 16
Four things that get harder with size
Change Learning Architecture Deployment

17. MICROSERVICES
!
AND BANKING

18. 1818
Very transactional business
Composing core capabilities
Mainframe programs
Pace of change

19. HOW TO START?

20. 20
Start with one

21. 21
Know your limits
http://martinfowler.com/bliki/MicroservicePrerequisites.html
Rapid provisioning
Basic Monitoring
Rapid application
deployment

22. 22
Smaller is better than big

23. 23
Start simple

24. 24
Align each service with customer value

25. 25
Lightweight frameworks

26. 26
Write a well-tested, easy to use API

27. 27
Decoupled collaboration
“be conservative in what
you do, be liberal in what
you accept from others”
Postel’s Law
http://martinfowler.com/bliki/TolerantReader.html

28. 28
Working software is the best contract

29. 29
Simple systems
Refactoring between services
Tricky things…
Identifying boundaries
Co-ordinating between teams

30. ENABLING MICROSERVICES

31. 31
“organizations which design systems
are constrained to produce designs
which are copies of the communication
structures of these organisations”
Conway’s Law

32. 32
Cultural and organisational shifts

33. 33
Enable. Don’t prescribe.

34. 34
Make deployment easy

35. 35
Monitoring

36. 36
Versioning

37. Q & A

38. @samnewman

39. SOME PLACES TO START
Video
•http://www.thoughtworks.com/insights/blog/microservices-nutshell (watch James
Lewis’s video near the bottom of the page)
Article
•http://martinfowler.com/articles/microservices.html (keep an eye on Martin’s blog for
more content on Microservices)
Book
•http://samnewman.io/books/building_microservices/ (Sam’s blog is also great to keep
an eye on)
!
39

40. MICROSERVICES
Rouan Wilsenach
@rouanw
H o w t o b e g i n u s i n g