DistOS 2015W Session 11

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