Look Mom nosql

Look Mom - NoSQL Charles NurseSenior Architect, DotNetNuke Corp.

Look Mom - NoSQLWho Am I• ASP.NET MVP (since Jan 2007)• ASPInsider (since Jan 2008)• Senior Architect, DotNetNuke Corporation• Web: www.dotnetnuke.com• Blog: www.charlesnurse.com• Email: charles.nurse@dnncorp.com• Twitter: @cnurse

Look Mom - NoSQLAgenda• Intro to NoSQL Databases  CAP Theorem  Map Reduce• NoSQL Database Types• RavenDB• Demo

Look Mom - NoSQLIntro to NoSQL Databases• Driven by the demands of “Big Data”  Google  Facebook  Amazon• Huge amounts of data  Distributed Environment  Availability• CAP Theorem

Look Mom - NoSQLCAP Theorem• CAP Theorem states  “It is impossible for a distributed computer system to simultaneously provide all three of the guarantees”• Consistency• Availability• Partition Tolerance

Look Mom - NoSQLCAP Theorem• Consistency  All nodes in a distributed system see the same data at the same time  eCommerce  Weapons Systems• Availability  All requests receive a response about whether it was successful or failed• Partition Tolerance  The system continues to operate despite arbitrary message loss or failures of part of the system

Look Mom - NoSQLCAP Theorem• Relational Databases emphasise Consistency, so either Availability or Partition Tolerance will suffer• NoSQL Databases emphasise Availability and Partition Tolerance  Eventual Consistency  Google Searches do not need to show documents created in the last few seconds  Facebook News Feed – do not need to show updates from the last few seconds

Look Mom - NoSQLMap Reduce• NoSQL databases support distributed systems• Map Reduce helps aggregate data using a pair of functions  Map function  Maps input data into its final form  Can be executed in parallel on each system  Reduce function  Operates on results of the Map functions  Executed repeatedly until results are obtained

Look Mom - NoSQLMap Reduce (Example)• Blog Documents • Map{ from post in docs.posts "type": "post", select new { "name": "Ravens Map/Reduce post.blog_id,functionality", comments_length = comments.length "blog_id": 1342, }; "post_id": 29293921, "tags": ["raven", "nosql"], • Reduce "post_content": "<p>...</p>", from agg in results "comments": [ { group agg by agg.key into g "source_ip": 124.2.21.2, select new { "author": "martin", agg.blog_id, "text": "..." comments_length = g.Sum(x=>x.comments_length) }] };}

Look Mom - NoSQLMap Reduce (Example)• Apply Map

Look Mom - NoSQLMap Reduce (Example)• Reduce  Step 1

Look Mom - NoSQLMap Reduce (Example)• Apply Map

Look Mom - NoSQLNoSQL Database Types• Sorted Ordered Column-Oriented Stores• Key/Value Stores• Document Databases

Look Mom - NoSQLNoSQL Database Types• Sorted Ordered Column-Oriented Stores• Pioneered by Google  BigTable• Hbase  Apache Foundation  Used by Facebook, Stumble Upon, Hulu• HyperTable  Baidu

Look Mom - NoSQLNoSQL Database Types• Sorted Ordered Column-Oriented Stores• Compare with Relational Databases.

Look Mom - NoSQLNoSQL Database Types• Sorted Ordered Column-Oriented Stores

Look Mom - NoSQLNoSQL Database Types• Key/Value Stores• Membase – built on MemCacheD  Zynga• Redis  Craigslist• Cassandra  Facebook, Digg, Reddit, Twitter

Look Mom - NoSQLNoSQL Database Types• Document Databases• MongoDB  Foursquare  Github• CouchDB  Apple, BBC, CERN• RavenDB  Built in .NET, with LINQ

Look Mom - NoSQLRavenDB• Document Database  Using JSON• Built in .NET• LINQ Support• Full-text Search  Built on Lucene• Two versions  Server  Embedded

Look Mom - NoSQLDemo

Look Mom - NoSQLNext Steps• Get RavenDB  http://ravendb.net/• Get MongoDB  www.mongodb.org/  .NET driver  https://github.com/mongodb/mongo-csharp-driver/downloads  FluentMongo – LINQ for MongoDB  https://github.com/craiggwilson/fluent-mongo  NoRM  http://normproject.org/

Look Mom - NoSQLThank You• Email: charles.nurse@dnncorp.com• Blog: www.charlesnurse.com• Twitter: @cnurse

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Look Mom nosql

by Charles Nurse

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Look Mom nosql

by Charles Nurse

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Look Mom nosql Presentation Transcript

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