Introduction to RavenDB

An introductory view into the world of NoSQL and RavenDB.

Transcript

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
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
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
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!