Intro to RavenDB

Hi, My Name Is…

 Alonso Robles
 @alonsorobles
 http://alonsorobles.com

 Principal Consultant at Headspring
 @headspring
 http://headspring.com

Before we begin…

 Central Texas GiveCamp
 Developers
 Sponsors
 http://ctxgivecamp.org

 RavenDB Boot Camp
 September 5th-6th
 2-day hands-on workshop
 Headspring, Austin, TX
 http://headspring.com

Agenda

 NoSQL Crash Course

 Overview of RavenDB

 Development with RavenDB

Crash Course
NoSQuirreLs? But why?

History of the Datum

 We (the programmers) gave
birth to data

 We put it (the data) in memory

 We discovered a way to persist it

 So we put it in files

 And we had more problems to
solve…

From Data To Management

 Common problems
 Data retrieval
 Concurrent writes
 Optimize for space
 Data aggregation

 Lead to the introduction of
 RDBMS
 SQL

RDBMS + SQL

Strengths Limitations

 ACID  Scaling horizontally is hard
 Atomic
 Consistent  Scaling vertically is expensive
 Isolated  Object to relation mapping can
 Durable be difficult

 Relational
 Table / Row
 Rich query support

 Data Integrity
 Foreign Keys
 Enforced Schema

Polyglot Persistence

 Relational
 MS SQL Server
 MySQL
 Key-Value
 Redis
 Dynamo
 Column-Oriented
 BigTable
 Cassandra
 Document-Oriented
 MongoDB
 RavenDB

Key-Value

 Simplest of all data stores

 IDictionary<string, object>

 Key is a string

 Value is a blob
 Schema free

 Query by key
 Or key range sometimes

 Good candidate for
 User session storage
 Shopping carts

Document-Oriented

 Like a key-value store

 Document in known format
 JSON
 BSON
 XML

 Supports server side operations

 Good for
 Complex objects
 DDD Aggregates

Column-Oriented

 Not relational at all

 Schema free

 Concepts to understand
 Column families
 Row Keys
 Columns
 A Key Value Pair

 Good for
 Large amounts of sparse data

Is SQL Dead?

 Nope

 It’s still the strongest option for
 Reports
 Dynamic Aggregations
 Data integrity enforcement

 Remember
 NoSQL = Not Only SQL
 Or… NoSQuirreLs

RavenDB
The Very Brief Overview

What is it?

 It’s a document database

 Built on .NET for .NET

 JSON data storage

 Built on top of Lucene

 Open source

 Gets out of your way

 It just works

 Just code – studio not required

Features I Really Like

 Scalable via shards and/or replication

 Schema free

 Easy to learn and develop against

 Full power of Lucene
 Full-text search
 Faceted search
 Auto suggest
 More like this

 Multiple deployment options

Development
Oh yeah! It’s fun!

.NET Client API

 IDocumentStore
 Session factory
 Thread safe heavy weight object
 Thread safe
 Use single instance per application

 IDocumentSession
 Interacts with the database
 Not thread safe light weight object
 Implements Unit of Work pattern
 Use one per thread or web request

CRUD Operations

 Create
 IDocumentSession.Store(object)
 Retrieve
 IDocumentSession.Load<T>(string)
 Update
 Retrieve and modify
 Delete
 IDocumentSession.Delete(object)
 Don’t Forget
 IDocumentSession.SaveChanges()

Query Operations

 Rich LINQ support

 Basic Query
 IDocumentSession.Query<T>()
 Returns a IRavenQueryable<T>
 Implements IQueryable<T>

 Filtering
 Use a Where(…) clause

 Paging
 Use Skip(int) and Take(int)

Dynamic Indexes

 Automagically created on demand

 Raven learns about your application

 Dynamic indexes marked as temporary
 Removed if not used
 Promoted to permanent if used a lot

Static Indexes

 Do it your self

 It’s just a class
 That defines
 Implicit or explicit index name
 One or more map functions
 Optional reduce function
 Optional transform function
 May define many other options like
 Field options
 Storage
 Analysis

More to Learn

 Querying
 Using the query statistics
 Indexes
 More options
 Hierarchical indexes
 Polymorphic indexes
 Projections

 Document relationships

 Attachments

 Shards and Replication

Even More to Learn

 Advanced topics
 Transaction support
 Document metadata
 Spatial search
 Dynamic fields
 Database commands
 Server administration

 Deployment options

 Multi-tenancy

 Using bundles

Where to Learn More

 Official website
 http://ravendb.net
 Google group
 http://groups.google.com/group/ravendb
 GitHub
 http://github.com/ravendb/ravendb
 Headspring
 Exclusive North American Training Partner
 RavenDB Boot Camp on Sept 5th-6th
 More info @ http://headspring.com
 Follow me on Twitter
 @alonsorobles

The End
Alonso Robles
@alonsorobles
http://alonsorobles.com

Intro to RavenDB

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