Kaifeng Zhang & Yuheng Wang

Agenda

Why NoSQL? NoSQL Overview MongoDB vs. Riak

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NoSQL History

1998, Carlo Strozzi, “NoREL” 2009, Eric Evans, “NoSQL” 2011, UnQL, superset of SQL

No SQL vs. Not Only SQL

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Why NoSQL Happened

Web scale Data changes over time NoSQL becomes commodity

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NoSQL Features

Not require fixed table schema Not use SQL as query language Usually avoid join operation Not give full ACID guarantees Distributed, fault-tolerant architecture

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Scenarios for NoSQL

Performance and real-time nature over consistency

High scalability Store and retrieve huge quantity of data Not require a relational model

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NoSQL Taxonomy

Document StoreCollections (Table)Document (Row)

Key-value Store Graph Column Family

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Some Concepts

CAP Theorem Distribution Model ACID Eventual Consistency

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Setup

All major OS Stable and

experimental

• No official support of Windows

• Robust support of Linux

• Nature cluster

Mongo Riak

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Tooling

• Cmd line tool

• Web interface

• 3rd party solutions

• Poor

Mongo Riak

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Driver Support

• C/C++, Java,

• Erlang

• PHP, Python, Ruby

• Perl, Scala, .NET

• Node.js, JS

• C/C++, Java

• Erlang

• PHP, Python, Ruby

Mongo Riak

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CRUD(.NET)

• Excellent drivers support

• Straightforward

• Corrugated Iron

• RESTful API

Mongo Riak

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Query Complexity

• Secondary index

• MapReduce in JavaScript

• Corrugated Iron query broken

• RESTful API to test

Mongo Riak

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ID Generation

• Incremental document field

• No viable solution

Mongo Riak

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