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from "hu_mongo_us"

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Who is behind MongoDB company formerly 10gen company http://www.mongodb.org/

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Who to follow MongoDB @MongoDB Eliot @eliothorowitz Jeremy Mikola @jmikola @MongoHQ @MongoLab @ObjectRocket

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DATABASE LANDSCAPE

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JSON/BSON

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JS console ➜ bin ./mongo MongoDB shell version: 2.6.3 connecting to: test > var a = 10 > var b = 20 > a + b 30 >

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Entities Relational DB MongoDB database database table collection row document index index primary key _id Sharding partition shard partition key shard key

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Special _id type 5033ea5c e84df1 110f 000001 Timestamp Hostname PID Sequence 12-byte, binary string Easily generated in cluster environments Timestamp prefix useful for sorting

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Document Example { "_id": 1, "title": "Praesent ante dui", "body": "Lorem ipsum…", "author": { "name": "Bob", "email": "[email protected]" }, "comments": [ { "body": "Morbi libero erat…", "author": { "name": "John", "email": "[email protected]" } }, { "body": "Dapibus quis…", "author": { "name": "Tom", "email": "[email protected]" } } ], "tags": [ "luctus", "rhoncus" ] }

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Document model Flexible schemas Scalability and performance Features (aggregation, geo, GridFS) MONGODB: THE GOOD PARTS

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Limited atomicity Consistency is a trade-off Query language limitations Concurrency (improving) MONGODB: THE BAD PARTS

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mongod mongo Binaries mongos mongodump mongorestore mongoexport mongoimport

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DEMO TIME

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Replication

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Sharding

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Aggregation Framework

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Questions?