Domain driven design @FrOSCon

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Lucas' Talk about domain driven design at the FrOSCon from 23th and 24th of August

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Domain driven design @FrOSCon

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

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