DistOS 2015W Session 11: Difference between revisions
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==BigTable== | ==BigTable== | ||
* Google System used for storing data of various Google Products, for instance | * 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 | * Big table is | ||
** Sparse | ** Sparse | ||
Revision as of 18:41, 28 March 2015
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