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Edgar Allan Poe presents The Raven

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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."

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…just kidding…

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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 ???

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Contents • NoSQL? • What is RavenDB? • RavenDB .NET API • RavenDB REST API • Installing RavenDB • Replication and Sharding

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Nosql

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In the beginning… the year 1970 of our Lord … 20 years of kicking ass… Edgar Frank Codd

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In the beginning…

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2000 BigTable Dynamo 2009 Nosql

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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!

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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??

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Why Sql ? :-) • ACID • Consistency • More mature • More Common Competence • Better tooling • Can handle all kinds of queries • SQL

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Types of nosql databases? Graph Databases http://nosql-database.org/ Wide Column Stores Document Stores Key value Stores

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Ravendb basics

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Ravendb • Document Database • No schema • Store objects as JSON documents • Query using LINQ • Built-in REST API Wonderfultastic!

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Ravendb • ACID document transactions • BASE index querying • Self-optimizes based on usage • High scalability • Replication and sharding out of the box • Safe by default

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Ravendb Management Studio (RDBMS) • Silverlight application • Access via browser where RavenDB server is hosted

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Ravendb documents • An object stored in RavenDB is called a document • Documents need not be flat unlike rows in RDBMS • Persisted as JSON

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Ravendb documents • Documents can be [logically] grouped in collections • Collections are defined as metadata • Indexes filter by collections

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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)

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Ravendb documents • Every document has metadata attached

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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

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demo Ravendb management studio

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Ravendb .net api

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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

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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” }

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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)

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Ravendb .net api – Querying

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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...

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demo

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Ravendb Rest api

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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!

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demo Get started with Ravendb Rest api

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Ravendb Intalling

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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

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Installing Ravendb

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Extend Ravendb via Bundles • Compression • Encryption • Expiration • Versioning • Quotas • Periodic Backups • Authorization • etc http://ravendb.net/docs/2.5/server/extending/bundles

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demo Installing Ravendb

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Ravendb With replication and sharding Scaling out

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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

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References And code samples

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

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Nosql books

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Ravendb books

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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

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Ravendb documentation • RavenDB Documentation • https://ravendb.net/docs • RavenDB YouTube channel • http://www.youtube.com/playlist?list=PL7E1E1A49999CB0F5

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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

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Thank you. y u so sad?!? Thank you!