#2 Big Table:

Big Table is a compressed, high performance, and proprietary data storage system, developed under the guidance of Google. The database is primarily built using technologies like Google File System, Chubby Lock Service and SSTable. Although Google doesn’t offer this database outside their system, users still can avail a part of it using Google App Engine. Supporters use this limited access just to add some extra speed to their searching. Hadoop users can incorporate Big Table into Accumolo and others can use it with Hypertable.

#1 DynamoDB:

Amazon DynanoDB is a NoSQL database service offered by Amazon. This database serves as a key ingredient to Amazon Web Services. DynamoDB offers storage in terms of key and value pairs and spreads them out across servers in three different zones. One of the interesting facts is that the database itself can increase the number of servers when a demand for more traffic augments.

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