Domain Driven Design & NoSQL @ RedDotRuby Conf

A little talk about Domain Driven Design and NoSQL I gave at the RedDotRuby Conf in Singapore.

Transcript

1. Escaping the Tower of Babel Domain Driven Design & NoSQL
2. Escaping the Tower of Babel Domain Driven Design & NoSQL
3. class SpaceShuttle end ! class Astronaut end v I
4. Domain Driven Design • Find an ubiquitous language • Every person involved understands the language • The language is based on the domain Eric Evans
5. Iterative Development Close relationship between devs & domain experts Domain Driven Design
6. Hi. I’m Lucas.
7. From Köln / Cologne
8. Dom / Cathedral
9. Hohenzollernbrücke
10. I work for ArangoDB GmbH
11. We build ArangoDB
12. ArangoDB is an Open Source NoSQL Database
13. But what is NoSQL?
14. SQL NoSQL
15. SQL Not only SQL
16. What is NoSQL? What is SQL? What is a relational algebra? What is a relation? Not SQL A relational algebra An algebra on relations
17. {(Alice, 1983-07-1, 1) (Bob, 2014-03-19, 2)}
18. name birthday city Alice 1983-07-1 1 Bob 2014-03-19 2
19. Disconnect I v Ownership name: alice… type: spaceshuttle
20. Entity Value Object Service Identified by ID Value What it does State Mutable Immutable Stateless
21. + Factories + Repositories + Aggregates
22. DENORMALIZATION
23. Lift the restriction • Tuples containing other Tuples • Tuples with arbitrary attributes
24. Space Shuttle Parts
25. Space Shuttle Parts Document Store
26. I type: spaceshuttle v name: alice astronaut: 1 spaceshuttle: 3
27. JOINS
28. Alice Ownership SpaceShuttle
29. Alice Ownership SpaceShuttle Graph Database
30. Alice Ownership SpaceShuttle Parts
31. Alice Ownership SpaceShuttle Parts I’m a document!
32. Alice Ownership SpaceShuttle Parts Me too!
33. Alice Ownership SpaceShuttle Parts
34. Alice Ownership SpaceShuttle Parts Multi Model Database
35. Disconnect I v Ownership name: alice… type: spaceshuttle
36. I type: spaceshuttle v name: alice Ownership since: 2003
37. Explain graphs. Learn about the domain. Find the common language. Build one model for everyone involved. Evolve the model alongside the implementation moonglum moonbeamlabs arangodb.org