NoSql Tutorial 5 : NoSql: Key-value stores

It is the simplest NoSQL databases. Every single item in the database is stored as an attribute name (or "key"), together with its value. Examples of key-value stores are Riak and Voldemort. Some key-value stores, such as Redis, allow each value to have a type, such as "integer", which adds functionality.
·         Designed to handle huge amounts of data.
·         Based on Amazon’s Dynamo paper.
·         Key value stores allow developer to store schema-less data
·         In the key-value storage, database stores data as hash table where each key is unique and the value can be string, JSON, BLOB (basic large object) etc..
·         Key-Value stores follows the 'Availability' and 'Partition' aspects of CAP theorem.

·         Key-Value stores can be used as collections, dictionaries, associative arrays etc.

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