Microservices Data Patterns

“One size does not fit all.” And this is still specially true for your distributed data! Different types of data require different approaches of how you distribute & manipulate your data.

Update frequency? Staleness? Push or pull? Legacy or new? Cache or direct read? Event Sourcing? Business or low-level events? Check this session to see how different technologies such as Data Virtualization, Change Data Capture, In-memory Data Grids, Reactive Programming and much more can be applied to solve a plethora of different data scenarios with different requirements.

Transcript

1. Microservice Data Patterns: CQRS & Event Sourcing Edson Yanaga Director of Developer Experience @yanaga
2. Join developers.redhat.com 2 Java Champion Microsoft MVP
3. http://developers.redhat.com/promotions/ migrating-to-microservice-databases
4. Code is easy, state is hard
5. How was data managed 10 years ago?
6. Terrified about Entity Beans
7. Hibernate to the rescue!
8. Replacing XML with @Annotations
9. POJOs as an (Anemic) Domain Model
10. Event Sourcing
11. Join developers.redhat.com 11 ID CUSTOMER_ID BALANCE 1001 990 1000 1002 991 0 1003 991 -500 1004 992 300 Account
12. Join developers.redhat.com 12 ID ACCOUNT_ID TIMESTAMP OP AMOUNT 1 1001 1234567890 C 1000 2 1002 1234567891 C 200 3 1001 1234567900 D 300 4 1001 1234567995 D 150 Transactions
13. Enables you to think in the Events that happened in the system
14. CQS (Command-Query Separation) “Asking a question should not change the answer” (Bertrand Meyer)
15. “Asking a question should not change the answer” (Bertrand Meyer)
16. CQRS (Command Query Responsibility Segregation)
17. Join developers.redhat.com 17 CQRS (Command Query Responsibility Segregation)
18. Join developers.redhat.com 18 ID NAME PHONE ADDRESS BIRTH 1 Burr 222-222-2323 901 South St 12/12/1968 2 Edson 222-333-3434 112 North Dr 03/03/1978 3 John 111-456-4545 666 Iron St 06/06/1966 4 Doe 333-789-7890 777 Boeing Dr 07/07/1977 INSERT INTO CUSTOMER(ID,NAME,PHONE,ADDRESS,BIRTH); SELECT * FROM CUSTOMER;
19. Join developers.redhat.com 19 SELECT ID, NAME, PHONE FROM CUSTOMER; SELECT ID, NAME, ADDRESS FROM CUSTOMER;
20. Join developers.redhat.com 20 CQRS with separate data stores
21. Join developers.redhat.com 21 SELECT ID, NAME, AGE, AVG_BILL FROM CUSTOMER_REPORT_VIEW; SELECT ID, PHONE, LAST_PAYMENT_AMOUNT FROM CUSTOMER_BILLING_VIEW;
22. CQRS & Event Sourcing
23. Join developers.redhat.com 23 ID CUSTOMER_ID BALANCE 1001 990 1000 1002 991 0 1003 991 -500 1004 992 300 Account ID ACCOUNT_ID TIMESTAMP OP AMOUNT 1 1001 1234567890 C 1000 2 1002 1234567891 C 200 3 1001 1234567900 D 300 4 1001 1234567995 D 150 Transactions
24. Join developers.redhat.com 24 ID CUSTOMER_ID BALANCE 1001 990 1000 1002 991 0 1003 991 -500 1004 992 300 Account ID ACCOUNT_ID TIMESTAMP OP AMOUNT 1 1001 1234567890 C 1000 2 1002 1234567891 C 200 3 1001 1234567900 D 300 4 1001 1234567995 D 150 Transactions READ MODEL WRITE MODEL
25. Why CQRS?
26. Performance
27. Distribution Availability Integration Analytics
28. Join developers.redhat.com 28 Canonical Source of Information (Write Data Store)
29. Join developers.redhat.com 29 Canonical Source of Information (Write Data Store) Read Data Store Read Data Store
30. Join developers.redhat.com 30 Canonical Source of Information (Write Data Store) Read Data Store Read Data Store Events Events
31. Different choices of technology depending on the requirements
32. Latency Size Staleness Ownership Security Type?
33. Join developers.redhat.com 33 http://infinispan.org/ In-memory Data Grids
34. Join developers.redhat.com 34 http://teiid.jboss.org/ Data Virtualization
35. Join developers.redhat.com 35 http://activemq.apache.org/ Message Brokers https://kafka.apache.org/
36. Join developers.redhat.com 36 http://vertx.io/ Reactive Platform
37. Join developers.redhat.com 37 REMOTE API
38. Join developers.redhat.com 38 REMOTE API REACTIVE
39. Join developers.redhat.com 39 http://debezium.io/ Change Data Capture
40. Join developers.redhat.com Feedback welcome! @yanaga
41. plus.google.com/+RedHat linkedin.com/company/red-hat youtube.com/user/RedHatVideos facebook.com/redhatinc twitter.com/RedHatNews Thank you!