AWS Classroom Series – 18/Jun/2021

Amazon Dynamo DB

• Dynamo DB is fully managed NOSQL offering from AWS.

• Dynamo DB supports both document and key-value data structures

• Benefits of Dynamo DB

  • Scalable
  • Managed Service
  • Fast, consistent performance
  • Fine grained access control
  • cost-effective
  • Integrate with other AWS Services

• Terminology

  • Table: Fundamental construct for organizing and storing data
  • Table consists of infinite number of data items
  • An item is composed of primary key and key value pairs called as attributes

• Dynamo Db supports

  • four scalar data types
    • Number
    • String
    • Binary
    • Boolean
  • NULL value
  • Collection data types
    • Number set
    • String set
    • Binary set
    • List
    • Map

• Dynamo DB supports two different kinds of primary keys

  • Partition key: This is also known as simple primary key. It consists of one attribute known as partition key
  • Partition Key and sort key: This is known as composite partition key. This type of key is composed of two attributes
    • Partition key
    • Sort key
  • Units of capacity required for writes = Number of item writes per second * Item size in 1KB blocks
  • Unit of capacity required for reads = Number of Items read per second * Item size in 4 KB Blocks

• Programming SDK’s

  • Java Refer Here
  • Python Refer Here
  • .Net Refer Here

Amazon Elastic Cache

• Amazon Elastic Cache is a service that makes it easy to deploy, operate and scale an in-memory cache in the cloud
• Amazon Elastic Cache supports two different in-memory key-value engines
  • Memcached
  • Redis
• Programming SDK
  • Java Refer Here
  • .net Refer Here