NoSQL

• Key-Value (Redis, DynamoDB)

  • A key-value NoSQL database is useful for caching.

• Graph (Neo4j)

  • Used for graphs

• Column (Cassandra)

  • Grouped by Column (unlike RDBMS, which is by row).

• Document (MongoDB, DynamoDB)

  • Grouped by document, a JSON object, or Schemaless

• Redis and MongoDB are CP

• Cassandra and DynamoDB are AP