Описание тега key-value-store

Key/Value stores allow the application to store its data by composing `(key, value)` pairs.

Key/Value stores allow the application to store its data in a schema-less way.

The data can be stored in a datatype of a programming language or an object. Because of this, there is no need for a fixed data model.

The following types exist:

  • Eventually consistent;
  • Hierarchical;
  • Cache in RAM;
  • Solid state or rotating disk;
  • Ordered.

Source: http://en.wikipedia.org/wiki/NoSQL#Key.E2.80.93value_stores