Open Source Bridge

Excerpt

Description

Cassandra is an open source, highly scalable distributed database that’s rapidly gaining momentum in the NoSQL community. It brings together Dynamo’s fully distributed design and Bigtable’s ColumnFamily-based data model to provide a unique data storage solution that is suitable to a wide variety of use cases.

Professor Eric Brewer’s CAP theorem states that a distributed system design can offer at most two out of three desirable properties: Consistency, Availability, and Partition Tolerance. So, how do you provide consistency when your distributed system’s primary requirements are availability and partition tolerance?

In this talk we’ll introduce eventual consistency and the four strategies that Cassandra uses to provide it, while still maintaining high availability:

• Gossip
• Read Repair
• Hinted Hand-off
• Anti-Entropy

Tags

database, cassandra, nosql

Speaker

• Kelvin Kakugawa

  Digg, Inc.
  • Website: http://digg.com/
  • Blog: http://about.digg.com/blog/technology

  Biography

  Kelvin Kakugawa is an infrastructure engineer at Digg where he works on Cassandra, an open source distributed database. The scope of his responsibilities include: vector clocks, distributed counters and performance optimization. His work affects the millions of users who visit digg.com on a daily basis.

  Sessions

  • * Cassandra: Strategies for Distributed Data Storage
    • Title: Cassandra: Strategies for Distributed Data Storage
    • Track: Chemistry
    • Room: Morrison
    • Time: 3:45 – 4:30pm
    • Excerpt:

      Cassandra is an open source, highly scalable distributed database that brings together Dynamo’s fully distributed design and Bigtable’s ColumnFamily-based data model. In this talk we’ll discuss the strategies Cassandra employs to provide an eventually consistent data model.

    • Speakers: Kelvin Kakugawa