NoSQL - the Shift to a Non-Relational World

NoSQL: The Shift to a Non-relational Dwight Merriman 10gen / MongoDB

The database world is changing no longer one-size-ﬁts-all RDBMS (Oracle, MySQL) Non-relational New gen. OLAP (vertica, aster, greenplum) operational stores (“NoSQL”)

The Web Domain Distributed & Unpredictable Big data Photos, videos, huge numbers of users Not all data created equal high-value (credit cards, transactions) low-value (analytics, logs, tweets?) Nimbleness Critical agile development new programming models

NoSQL really means: non-relational next generation operational datastores and databases

Scaling out no joins + light transactional semantics = horizontally scalable architectures

Scaling out - CAP pick any two A C P

Scaling out - CAP A Amazon Dynamo Inspired (Voldemort, Cassandra, ...) C P Google BigTable / Paxos Inspired (MongoDB, Hypertable, HBase, ...)

Scaling out distribution & query models consistent hashing range chunking order preserving scatter / gather

Data models no joins + light transactional semantics = horizontally scalable architectures important side effect : new data models = improved ways to develop applications

Data Models Key/Value Column-oriented / tabular Document-based

Data Models Key/Value memcached, dynamo, voldemort, memcached Column-oriented / tabular bigtable, cassandra, hbase, hypertable Document-oriented mongodb, couchdb. JSON stores

Case Study MongoDB at BusinessInsider.com

MongoDB at Business Insider 600k pageviews / day 3 apache servers 1 database server at 5% MongoDB data includes posts, comments site settings real-time analytics images Ian - “We’re using LAMP - Linux, Apache, MongoDB, PHP” http://www.businessinsider.com/how-we-use-mongodb-2009-11

Business Insider Data Model { title: ‘Too Big to Fail’, author: ‘John S’, ts: Date(“05-Nov-09 10:33”), [ comments: [ { author: 'Ian White', comment: 'Great article!' }, { author: 'Joe Smith', comment: 'But how fast is it?', replies: [ {author: 'Jane Smith', comment: 'scalable?' } ] } ] ], tags: [‘finance’, ‘economy’] }

MongoDB Query Example cursor = db.posts.find({tags : ‘economy’}).sort({ts:-1}).limit(10); { title: ‘Too Big to Fail’, author: ‘John S’, ts: Date(“05-Nov-09 10:33”), [ comments: [ { author: 'Ian White', comment: 'Great article!' }, { author: 'Joe Smith', comment: 'But how fast is it?', replies: [ {author: 'Jane Smith', comment: 'scalable?' } ] } ] ], tags: [‘finance’, ‘economy’] }

Advantages vs. MySQL “Schemaless” Fast writes analytics: 3-8 upserts per pageview Fast reads little caching necessary Binary storage storing images in the db itself Easy development, scalability

Prediction within 12 months, majority of new web infrastructure projects will use a non-relational db as their primary data store

Questions? 10gen is hiring, email dwight@10gen.com download MongoDB: www.mongodb.org

NoSQL - the Shift to a Non-Relational World

by Dwight Merriman on Nov 17, 2009

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NoSQL - the Shift to a Non-Relational World — Presentation Transcript

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