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Introduction to RavenDB

1dfad8107453e0f493ff1a6a8e48d503?s=47 Jaime
February 28, 2014

Introduction to RavenDB

An introductory view into the world of NoSQL and RavenDB.



February 28, 2014

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  1. Edgar Allan Poe presents The Raven

  2. Once upon a midnight dreary, while I pondered, weak and

    weary, Over many a quaint and curious volume of forgotten lore-- While I nodded, nearly napping, suddenly there came a tapping, As of some one gently rapping, rapping at my chamber door. "'Tis some visiter," I muttered, "tapping at my chamber door-- Only this and nothing more."
  3. …just kidding…

  4. Jaime González García Enthusiastic Software developer! Works at Medius R&D

    building a SPA... ... but also started jaimegonzalezgarcia.com Blogs at barbarianmeetscoding.com likes... fantasy sci-fi drawing Malin ???
  5. Contents • NoSQL? • What is RavenDB? • RavenDB .NET

    API • RavenDB REST API • Installing RavenDB • Replication and Sharding
  6. Nosql

  7. In the beginning… the year 1970 of our Lord …

    20 years of kicking ass… Edgar Frank Codd
  8. In the beginning…

  9. 2000 BigTable Dynamo 2009 Nosql

  10. What is NoSql today? • Big term used to refer

    to all non relational DBs (RDMBS’s) • Big hype • In general: • No relational • No schema • High availability and scalability (Web Scale) • Eventual consistency • No SQL (generally) …just like html5… Villaine hipsters!
  11. Why Nosql ? Why Document Stores? • Simplicity • Developer

    friendly • No impedance mismatch (SQL != OOD) • No schema, less friction • Scalability: replication and sharding • Great APIs • Right tool for the job Databases for developers??
  12. Why Sql ? :-) • ACID • Consistency • More

    mature • More Common Competence • Better tooling • Can handle all kinds of queries • SQL
  13. Types of nosql databases? Graph Databases http://nosql-database.org/ Wide Column Stores

    Document Stores Key value Stores
  14. Ravendb basics

  15. Ravendb • Document Database • No schema • Store objects

    as JSON documents • Query using LINQ • Built-in REST API Wonderfultastic!
  16. Ravendb • ACID document transactions • BASE index querying •

    Self-optimizes based on usage • High scalability • Replication and sharding out of the box • Safe by default
  17. Ravendb Management Studio (RDBMS) • Silverlight application • Access via

    browser where RavenDB server is hosted
  18. Ravendb documents • An object stored in RavenDB is called

    a document • Documents need not be flat unlike rows in RDBMS • Persisted as JSON
  19. Ravendb documents • Documents can be [logically] grouped in collections

    • Collections are defined as metadata • Indexes filter by collections
  20. Ravendb documents • Each document has its own unique document

    ID • If we try to store two entities with the same id -> overwrite • By convention ID = collectionName/entityId (users/1) • By default entity id’s are generated (auto-incremented)
  21. Ravendb documents • Every document has metadata attached

  22. Modeling in Ravendb • Documents are not flat, you can

    store complex structures • RavenDB is not relational • A document is an independent entity • Include all details you need within the document • This is good for sharding • References are not enforced by the DB • If following DDD, an Aggregrate is a document • This pretty much enforces DDD uses of aggregates from the dB • Use aggregate to enforce invariants to store information safely
  23. None
  24. demo Ravendb management studio

  25. Ravendb .net api

  26. Ravendb .net api • Unit of Work • Change tracking,

    transactions, batching, etc • Feels like Entity Framework or NHibernate • IDocumentSession (unit of work) • IDocumentStore (session factory, singleton) • Query with LINQ • Works with pure POCOs • Available on NuGet
  27. A Poco’s life in Ravendb C# class Public class Raven

    { public string Name {get;set;} } POCO var myCuteRaven= new Raven {Name = “Kiwi”} (Plain Old CLR Object) Document instantiate ravens/1 { “Name”: “Kiwi” }
  28. Ravendb .net api – Querying • Every query uses and

    index • Static indexes persisted in the DB • Dynamic indexes created on the fly • Based on the queries that you do • Self-optimization based on usage • Eventual Consistency • Stale better than offline • BASE (Basically Available, Soft State, Eventual Consistency)
  29. Ravendb .net api – Querying

  30. Ravendb .net api – Other cool stuff • Uses Lucene

    as search engine • Can easily add attachments to documents • Profiling • Fully customizable • cache • Max number of request per session • Key generator • conventions • etc...
  31. demo

  32. Ravendb Rest api

  33. Ravendb Rest api • Documents in RavenDB feel a lot

    like resources... • Built-in REST api for CRUD operations over documents! You could run your whole single page application against Ravendb!
  34. demo Get started with Ravendb Rest api

  35. Ravendb Intalling

  36. Installing Ravendb • Client-Server • Install and start the service

    manually • Install as a windows service • Deploy it on IIS • DaaS (Database as a Service) (IaaS ) • Embedded in your .NET Application
  37. Installing Ravendb

  38. Extend Ravendb via Bundles • Compression • Encryption • Expiration

    • Versioning • Quotas • Periodic Backups • Authorization • etc http://ravendb.net/docs/2.5/server/extending/bundles
  39. demo Installing Ravendb

  40. Ravendb With replication and sharding Scaling out

  41. Scaling Ravendb • Replication and Sharding out of the box

    • Sharding • Native • Partition contents of a ravendb database across several machines • Replication • Replicate contents of a ravendb database • As a bundle • Can replicate to SQL Server http://ravendb.net/docs/2.5/server/scaling-out
  42. References And code samples

  43. Github https://github.com/Vintharas/TheRavenDB https://github.com/Vintharas/BLooDandSTeeL

  44. None
  45. Nosql books

  46. Ravendb books

  47. On NoSql • NoSQL databases Explained • http://www.mongodb.com/learn/nosql • Pluralsight

    - NoSQL the big picture • http://pluralsight.com/training/Courses/TableOfContents/nosql-big-pic • Pluralsight - Understanding NoSQL • http://pluralsight.com/training/Courses/TableOfContents/understanding-nosql
  48. Ravendb documentation • RavenDB Documentation • https://ravendb.net/docs • RavenDB YouTube

    channel • http://www.youtube.com/playlist?list=PL7E1E1A49999CB0F5
  49. None
  50. Ravendb courses • Pluralsight - Introduction to RavenDB • http://pluralsight.com/training/Courses/TableOfContents/ravendb

    • Pluralsight - A Tour of RavenDB (with Ayende!!) • http://pluralsight.com/training/Courses/TableOfContents/tekpub-ravendb
  51. Thank you. y u so sad?!? Thank you!