AWS DynamoDB

• Amazon Dynamo DB is fully managed NoSQL Database from Amazon
• Dynamo Db is used from the code directly from here
• Components of Dynamo DB
  • Tables: Data is stored in tables. Eg: Movie
  • Items: Table is collection of Items. Item is group of attributes Eg: {‘id’: ‘1’,’Name’: ‘Avengers’}
  • Attribute: fundamental data element Eg: id and Name in above example are attributes
  • Primary Key: Two kinds of primary Keys
    • Partition Key: Equivalent to Primary Key
    • Paritition Key & Sort Key: Equivalent to Composite Primary Key
• DynamoDB Local Version:
  • Amazon is offering the Downloadbale version of Dynamo Db Refer Here
• Creating and Managing Dynamo Db:
• For managing uisng CLI Refer Here

Amazon DocumentDB

• Just like aurora in mysql/postgres where amazon has rewritten database engines for performance, in the nosql space, amazon has rewritten mongodb engine for better performance that is Document DB

Elastic Cache

• Amazon offers Cache as a Service with two offerings. For feature comparision refer here
  • Elastic Cache for Redis
  • Elastic Cache for Memcached
• Amazon is offering Redis Cache as a Service and Memcached as a Service