This is my presentation from NDC 2011 on Raven DB by example

1. Raven DB by Example

4. SELECT DISTINCT ... LEFT JOIN ... LEFT JOIN ... LEFT JOIN ... WHERE ... AND… OR…

5. What’s in this talk? WorkingsofRaven DB WorkingwithRaven DB Someexamples

6. Whythis talk? Documentdatabases is not onlyabout web scalability.

7. Whoam I? Emil Cardell Web developer Valtech Sweden @emilcardell www.unwillingcoder.com

8. Howdoes it work?

9. Howdoes it work?

10. Howdoes it work? Value

11. Howdoes it work? Metadata Content

12. Howdoes it work? Metadata Content Blobstorage

13. Whatdoesthis gives us? Fast reads Fast writes Full consistency

14. Whataboutqueries?

15. Whataboutqueries? Document store

16. Whataboutqueries? Lucene Index Document store

17. Whataboutqueries? Lucene Index Document store Background workers

18. Whataboutqueries? Lucene Index Document store Background workers

19. Whataboutqueries? Lucene Index Document store Background workers

20. Whataboutqueries? Lucene Index Document store Background workers

21. Whatdoesthis gives us? Fast queries Full free text search Eventualconsistency

22. How do youworkwith it? HTTP/REST JSON Lucene Queries Linq

23. Whatsuniqe? Dynamicqueries Transactions (DTC) Batching Live projections

24. How do youmodel?

25. The opposite! No referentialintegritry Denomalize Duplicate Isolate by change

26. Show me the code! Event publishing

27. Content Management public interfaceIContent { stringId { get; set; } stringParentId { get; set; } string[] AncestorsId { get; set; } stringSlug { get; set; } stringUrl { get; set; } }

28. Content Management varstore = newDocumentStore { Url= "http://localhost:8080", Conventions = { FindTypeTagName =type=> typeof(IContent).IsAssignableFrom(type) ?typeof(IContent).Name : null } };

29. Content Management public classHierarchyTrigger: AbstractPutTrigger { public overrideVetoResultAllowPut(...) { //Check for hierachical loops } public overridevoidOnPut(...) { //Calculateancestors //Calculateurl } }

30. Content Management varresults=documentSession.Query<IContent>() .Where(x =>x.Ancestors.Any(pageid=> pageid== ”pages/myUniqeId"));

31. If I wantcomments? varcontent= Session.Load<IContent>(_pageId); varcomments = Session.Load<PostComments>(_pageId); varcomment= newComment { Id = Guid.NewGuid(), Author= _commentInput.Name, //... }; content.CommentsCount++; comments.Comments.Add(comment);

32. Document databases is not only about web scalability.

33. Emil Cardell emil.cardell@valtech.se @emilcardell RavenDB: www.ravendb.net Images: Photo © 2011 Britta Heise