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Raven DB by Example
SELECT DISTINCT ... LEFT JOIN ... LEFT JOIN ... LEFT JOIN ... WHERE ... AND… OR…
What’s in this talk? WorkingsofRaven DB WorkingwithRaven DB Someexamples
Whythis talk? Documentdatabases is not onlyabout web scalability.
Whoam I? Emil Cardell Web developer Valtech Sweden @emilcardell www.unwillingcoder.com
Howdoes it work?
Howdoes it work?
Howdoes it work? Value
Howdoes it work? Metadata Content
Howdoes it work? Metadata Content Blobstorage
Whatdoesthis gives us? Fast reads Fast writes Full consistency
Whataboutqueries?
Whataboutqueries? Document store
Whataboutqueries? Lucene Index Document store
Whataboutqueries? Lucene Index Document store Background workers
Whataboutqueries? Lucene Index Document store Background workers
Whataboutqueries? Lucene Index Document store Background workers
Whataboutqueries? Lucene Index Document store Background workers
Whatdoesthis gives us? Fast queries Full free text search Eventualconsistency
How do youworkwith it? HTTP/REST JSON Lucene Queries Linq
Whatsuniqe? Dynamicqueries Transactions (DTC) Batching Live projections
How do youmodel?
The opposite! No referentialintegritry Denomalize Duplicate Isolate by change
Show me the code! Event publishing
Content Management public interfaceIContent { stringId { get; set; } stringParentId { get; set; } string[] AncestorsId { get; set; } stringSlug { get; set; } stringUrl { get; set; } }
Content Management varstore = newDocumentStore { Url= "http://localhost:8080", Conventions =  { FindTypeTagName =type=> typeof(IContent).IsAssignableFrom(type) 	?typeof(IContent).Name : null      }  };
Content Management public classHierarchyTrigger: AbstractPutTrigger {     public overrideVetoResultAllowPut(...)     { //Check for hierachical loops     }     public overridevoidOnPut(...)     { //Calculateancestors  //Calculateurl     } }
Content Management varresults=documentSession.Query<IContent>() .Where(x =>x.Ancestors.Any(pageid=> pageid== ”pages/myUniqeId"));
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);
Document databases is not only about web scalability.
Emil Cardell emil.cardell@valtech.se @emilcardell RavenDB: www.ravendb.net Images: Photo © 2011 Britta Heise

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Raven db byexample