Difference between revisions of "DistOS 2015W Session 11"
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| Line 7: | Line 7: | ||
** Writely | ** Writely | ||
**Google Earth | **Google Earth | ||
* Big table is | * Big table is | ||
** Sparse | ** Sparse | ||
| Line 13: | Line 12: | ||
** Muti dimensional Sorted Map | ** Muti dimensional Sorted Map | ||
*It is indexed by | *It is indexed by | ||
** Row Key | ** Row Key: | ||
** Column 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 | ** Time Stamp | ||
== Dynamo== | == Dynamo== | ||
*Availability is the buzz word for Dynamo. Dynamo=Availability | *Availability is the buzz word for Dynamo. Dynamo=Availability | ||
Revision as of 14:40, 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
- 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