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What is Amazon DynamoDB?
Amazon DynamoDB is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability. ... With DynamoDB, you can create database tables that can store and retrieve any amount of data, and serve any level of request traffic.

Amazon DynamoDB Accelerator (DAX) is a fully managed, highly available, in-memory cache that can reduce Amazon DynamoDB response times from milliseconds to microseconds, even at millions of requests per second.

Forrester Research positions Amazon Web Services in the Leaders Category of the Forrester Wave Big Data NoSQL, Q3. According to Forrester, Amazon DynamoDB is the most popular NoSQL cloud database. Learn why DynamoDB has proven to be a cost-effective NoSQL database solution for three organizations interviewed by IDC.

DynamoDB exposes performance metrics that helps provision it correctly and to keep applications using DynamoDB running smoothly:

  • Requests and throttling
  • Errors: ConditionalCheckFailedRequests, UserErrors, SystemErrors
  • Metrics related to Global Secondary Index creation

The DynamoDB Triggers feature integrates with AWS Lambda to allow a developer to code actions based on updates to items in a DynamoDB table, such as sending a notification or connecting a table to another data source. The developer associates a Lambda function, which stores the logic code, with the stream on a DynamoDB table. AWS Lambda then reads updates to a table from a stream and executes the function.​

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posted Sep 13, 2017 by Manish Tiwari

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