Migrating to microservices (Carlos Queiroz)

Transcript

1. 1 © 2015 Pivotal Software, Inc. All rights reserved. 1 © 2015 Pivotal Software, Inc. All rights reserved. Spring Cloud & Microservices/Cloud Native Apps Carlos Queiroz @cax
2. 2 © 2015 Pivotal Software, Inc. All rights reserved. A Monolith Application
3. 3 © 2015 Pivotal Software, Inc. All rights reserved. Microservices/Cloud Native
4. 4 © 2015 Pivotal Software, Inc. All rights reserved. Why? • SPEED • SAFETY • SCALE • MOBILITY
5. 5 © 2015 Pivotal Software, Inc. All rights reserved. Cloud Native Applications • Twelve Factor Apps • Microservices • Self-Service Agile Infrastructure • API-Based Collaboration • Antifragility
6. 6 © 2015 Pivotal Software, Inc. All rights reserved. Microservice “Loosely coupled service oriented architecture with bounded contexts...” -- Adrian Cockcroft
7. 7 © 2015 Pivotal Software, Inc. All rights reserved. Loosely Coupled If every service has to be updated in concert, it’s not loosely coupled!
8. 8 © 2015 Pivotal Software, Inc. All rights reserved. Bounded Contexts If you have to know about surrounding services you don’t have a bounded context.
9. 9 © 2015 Pivotal Software, Inc. All rights reserved. Microservices…
10. 10 © 2015 Pivotal Software, Inc. All rights reserved. Enabling Continuous Delivery
11. 11 © 2015 Pivotal Software, Inc. All rights reserved. Agile - Iterative Feedback loops
12. 12 © 2015 Pivotal Software, Inc. All rights reserved. Waterscrumfall
13. 13 © 2015 Pivotal Software, Inc. All rights reserved. Continuous Delivery
14. 14 © 2015 Pivotal Software, Inc. All rights reserved. How?
15. 15 © 2015 Pivotal Software, Inc. All rights reserved.
16. 16 © 2015 Pivotal Software, Inc. All rights reserved. Patterns • Cloud-native application architectures • Optimized for speed, safety, & scale • Declarative configuration • Stateless/shared-nothing processes • Loose coupling to application environment
17. 17 © 2015 Pivotal Software, Inc. All rights reserved. 12 Factors (1/2) • One Codebase in Version Control • Explicit Dependencies • Externalized Config • Attached Backing Services • Separate Build, Release, and Run Stages • Stateless, Shared-Nothing Processes
18. 18 © 2015 Pivotal Software, Inc. All rights reserved. 12 Factors (2/2) • Export Services via Port binding • Scale Out Horizontally for Concurrency • Instances Should Be Disposable • Dev/Prod Parity • Logs Are Event Streams • Admin Processes
19. 19 © 2015 Pivotal Software, Inc. All rights reserved. Platforms http://heroku.com http://cloudfoundry.org
20. 20 © 2015 Pivotal Software, Inc. All rights reserved. Frameworks http://www.dropwizard.io http://projects.spring.io/spring-boot
21. 21 © 2015 Pivotal Software, Inc. All rights reserved. Spring Boot • http://projects.spring.io/spring-boot • Opinionated convention over configuration • Production-ready Spring applications • Embed Tomcat, Jetty or Undertow • STARTERS • Actuator: Metrics, health checks , introspection
22. 22 © 2015 Pivotal Software, Inc. All rights reserved. Challenges of Distributed systems • Configuration Management • Service Registration & Discovery • Routing & Load Balancing • Fault Tolerance (Circuit Breakers!) • Monitoring • Concurrent API Aggregation & Transformation
23. 23 © 2015 Pivotal Software, Inc. All rights reserved.
24. CNA Patterns
25. 25 © 2015 Pivotal Software, Inc. All rights reserved. Patterns on-deck • Consistent and Distributed Configuration • Service Registration and Discovery
26. 26 © 2015 Pivotal Software, Inc. All rights reserved. Spring Cloud Distributed Patterns
27. 27 © 2015 Pivotal Software, Inc. All rights reserved. Configuration Management
28. 28 © 2015 Pivotal Software, Inc. All rights reserved. Config Server
29. 29 © 2015 Pivotal Software, Inc. All rights reserved.
30. 30 © 2015 Pivotal Software, Inc. All rights reserved. Config Server (app.groovy)
31. 31 © 2015 Pivotal Software, Inc. All rights reserved. Config server – application.yml
32. 32 © 2015 Pivotal Software, Inc. All rights reserved. https://bitbucket.org/caxqueiroz/configserver-data- public/src/798c0a25b54fbc597ca417211d99a5a5433c4016/demo.y ml Greeting: Guten Tag
33. 33 © 2015 Pivotal Software, Inc. All rights reserved. Config client (app.groovy)
34. 34 © 2015 Pivotal Software, Inc. All rights reserved. Config client (bootstrap.yml)
35. 35 © 2015 Pivotal Software, Inc. All rights reserved. Cloud Bus
36. 36 © 2015 Pivotal Software, Inc. All rights reserved.
37. 37 © 2015 Pivotal Software, Inc. All rights reserved. Service Registration & Discovery
38. 38 © 2015 Pivotal Software, Inc. All rights reserved.
39. 39 © 2015 Pivotal Software, Inc. All rights reserved. Eureka
40. 40 © 2015 Pivotal Software, Inc. All rights reserved. Eureka Service Registry
41. 41 © 2015 Pivotal Software, Inc. All rights reserved. Producer
42. 42 © 2015 Pivotal Software, Inc. All rights reserved. Consumer
43. CNA Patterns
44. 44 © 2015 Pivotal Software, Inc. All rights reserved. Patterns on-deck • Routing/Load Balancing • Fault Tolerance
45. 45 © 2015 Pivotal Software, Inc. All rights reserved. Routing & Load Balancing
46. 46 © 2015 Pivotal Software, Inc. All rights reserved. Ribbon
47. 47 © 2015 Pivotal Software, Inc. All rights reserved. Consumer with Load Balancer
48. 48 © 2015 Pivotal Software, Inc. All rights reserved. Consumer with Ribbon-Enabled RestTemplate
49. 49 © 2015 Pivotal Software, Inc. All rights reserved. Feign Client
50. 50 © 2015 Pivotal Software, Inc. All rights reserved. Consumer with Feign Client
51. 51 © 2015 Pivotal Software, Inc. All rights reserved. Fault Tolerance Hystrix
52. 52 © 2015 Pivotal Software, Inc. All rights reserved. Circuit Breaker
53. 53 © 2015 Pivotal Software, Inc. All rights reserved. Consumer (app.groovy)
54. 54 © 2015 Pivotal Software, Inc. All rights reserved. Producer Client
55. 55 © 2015 Pivotal Software, Inc. All rights reserved. Monitoring Hystrix Dashboard
56. 56 © 2015 Pivotal Software, Inc. All rights reserved. Hystrix Dashboard
57. 57 © 2015 Pivotal Software, Inc. All rights reserved. Hystrix Dashboard