NoSQLConcepts liveAstrid Ritscher

29.1.2014 Buchhandlung Lehmanns

Astrid RitscherPrincipal Consultantastrid.ritscher@acando.de

Acando GmbHBusiness Area NordMillerntorplatz 120359 HamburgGermany

Acando GmbH

Agenda

NoSQL

SQL

Graph oriented

Persistence

Key value

Flexible Schema

Performance

Scalability

Document oriented MongoDB

Couchbase

ArangoDB

Neo4j

Cassandra

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NoSQL

.. is (not only) an answer to Big Data with focus on performance and scalability.

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Document oriented

albums

tracks

Documents

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Document oriented

track

album : Neon Bible

artist : Arcade Fire

track count : 11

_id : 435

name : Keep The Car Running

genre : Rock

track number : 2

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Document oriented General Purpose Open Source Community Driven Commodity Hardware

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MongoDB Customers

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Schema

Collection Document JSON/BSON

{! "_id" : 123,! "Album" : "Neon Bible",! "Album Artist" : "Arcade Fire",! "Disc Count" : 1,! "Track Count" : 11,! "Tracks" : [! ! {! ! ! "_id" : 733,! ! ! "Name" : "Black Mirror",! ! ! "Composer" : "Richard Reed Parry",! ! ! "Genre" : "Rock"! ! },! ! {! ! ! "_id" : 735,! ! ! "Name" : "Keep The Car Running",! ! ! "Composer" : "Arcade Fire",! ! ! "Genre" : "Rock"! ! }, ...! ]}

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Schema vs. Relationalalbum

album

album artist

track count

_id

tracks

name

composer

_id

name

composer

genre

_id

album

id

album

album artist

track count

track

id

name

composer

genre

album_id

track

id

name

composer

genre

album_id

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Live

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start mongod,

show insert, find, update and delete

Aggregation

> db.tracks.aggregate( {$group: { _id : "$Genre", tracks:{$sum:1}}}, {$sort: {tracks:-1}}, {$limit:5} )

SELECT genre, count(genre) FROM tracks GROUP BY genreORDER BY count(genre) DESCLIMIT 5

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Performance

http://idcdocserv.com/1414 (28.1.2014)

Horizontal Scalability: Sharding

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mongod mongod mongod

Sharding

mongod

mongod

mongod

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Shard 2Shard 1 Shard 3Config

Router

mongodmongod mongod mongod

mongos

Sharding

Your Application

Native Driver

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Shard 2

Sharding

Shard Collection: tracksShard Key: Artist

Shard 1

chunk 2

Shard 3

chunk 1

chunk 3

chunk 4

chunk 2chunk 1 chunk 3 chunk 4

A-B C-F G-T U-Z

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Live

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start shard, config server and router

initialize sharding for a collection

show shard distribution and chunks

Shard 2Shard 1 Shard 3Config

Router

mongos mongos

mongod

mongod

mongod

mongod

mongod

mongod

mongod

mongod

mongod

mongod

mongod

mongos

Sharding in Production

mongod

Your Application

Native Driver

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Conclusions

RDBMS Document oriented

Fixed Schema Flexible Schema

Joins No Joins

Transactionsno Transactions over

Collections

Vertically scalable Horizontally scalable by Sharding

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Astrid RitscherPrincipal Consultantastrid.ritscher@acando.de

Acando GmbHBusiness Area NordMillerntorplatz 120359 HamburgGermany

Acando GmbH

Literature

NoSQL Distilledvon Pramodkumar J. Sadalage; Martin Fowler

Auflage:Jahr: 2012ISBN: 9780321826626

Verlag: Addison-Wesley Educational..Produkt-Art: Softcover

MongoDB Applied Design Patternsvon Rick CopelandPractical Use Cases with the Leading NoSQL DatabaseAuflage:Jahr: 2013ISBN: 9781449340049

Verlag: O'Reilly Media, Inc, USAProdukt-Art: Softcover

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Literature

MongoDB: The Definitive Guidevon Kristina ChodorowPowerful and Scalable Data StorageAuflage: 2Jahr: 2013ISBN: 9781449344689

Verlag: O'Reilly Media, Inc, USAProdukt-Art: Softcover

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