DistOS 2015W Session 11

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Revision as of 18:41, 28 March 2015 by Shivjot (talk | contribs)

BigTable

  • Google System used for storing data of various Google Products, for instance Google Analytics, Google Finance, Orkut, Personalized Search, Writely, Google Earth and many more
  • Big table is
    • Sparse
    • Persistant
    • Muti dimensional Sorted Map
  • It is indexed by
    • Row Key:

Every read or write of data under single row key is atomic. Each row range is called Tablet. Select Row key to get good locality for data access.

    • Column Key:
    • Time Stamp

Dynamo

  • Availability is the buzz word for Dynamo. Dynamo=Availability
  • Shifted Computer Science paradigm from caring about the consistency to availability.

Cassandra

  • Partitions data across the cluster using consistent hashing.

Spanner

  • Provided data consistency and Supports SQL like Interface
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