Microservices

A brief introduction to Microservices.

Transcript

1. Microservices A brief introduction to
2. Microservices Building scalable cloud-based software applications
3. The Outline • What is a Monolith • What are Microservices • The benefit • The drawback • A demo • What Archiver can do • What’s Next
4. Monolith
5. A single application bundle Web Service Mail DB Push
6. What’s wrong?
7. Slow compile/startup time 15s
8. Bundled scalability Web Service Mail DB Push Web Service Mail DB Push Web Service Mail DB Push
9. Failure diffusion 1 2 3 1 2 3
10. Chaos on cooperation 1 2 3 4 A B C Application Teams
11. Delay shipping 1 2 3 4
12. Long-term commitment to a technology stack
13. What are microservices
14. An architectural style
15. Self-contained Billing System Auth System Recommendation System
16. Communication Billing System Auth System Recommendation System
17. Replaceable Smart Recommendation System Billing System Auth System Stupid Recommendation System
18. Is it good?
19. Benefits • Independent development • Independent deployment • Independent scalability • Reusability
20. Independent development
21. Team-Service Billing Recommend ation A B Support C
22. Faster iteration Version 1 Version 2 Version 3 Version 1 Version 2
23. Polyglot Application Java Rust Javascript Ruby
24. Independent deployment
25. Rapidly shipment Order Support Social
26. Fault isolation Order Support Social Uptime 99.999%
27. Independent scalability
28. Scale independently Order Support Social Order Order Social Order
29. Reusability
30. Reusability Transcoding Streaming Upload Transcoding Download Social Application A Application B
31. Is it that good?
32. Additional complexity Service A Service B Service C
33. Inter-service communication RESTful AMPQ grpc Authentication Discovery MessagePack Protocol Buffers Connection pools Timeouts
34. Costs on the remote calls Service Service Service UI 10ms 20ms 30 ms
35. Shared library Order Social Support Shared logic
36. Hard to see the big picture
37. Dev dependency hell 2 1 3 New feature 4
38. Not a silver bullet
39. Demo
40. Exporter Fetcher Google Drive Dropbox The System
41. Fetcher The System Platform API Grab recordings
42. Exporter The System Export Google Drive Dropbox
43. Fetcher Google Drive Dropbox UI Components
44. Demo https://git.io/archiver-demo
45. • Self-Contained service • Inter-application communication protocol (http/json) • Shared library (Archiver.Shared) • Storage (service maintain it’s own state) • Supervising What’s implemented
47. Archiver
48. Find the boundary
49. 12-Factor App https://12factor.net
50. Monitoring
51. Progressive migration
52. Recap
53. Recap • What is a Monolith • What are Microservices • The benefit • The drawback • A demo • What Archiver can do
54. What’s Next
55. • ServiceMesh • Serverless (AWS Lambda) • Spring Cloud or Akka or .. • https://segment.com/blog/introducing-centrifuge/
56. One more thing
57. Actor Model
58. The Actor Model Actor Mailbox State
59. https://commons.wikimedia.org/wiki/File:Erlang_logo.svg http://www.erlang.org
60. Object Orientation OO is only about message passing and isolation and protection of state. - Alan Kay http://userpage.fu-berlin.de/~ram/pub/pub_jf47ht81Ht/doc_kay_oop_en