Amazon DynamoDB
Global Tables

Globally-replicated, reliable, and fast database

Simone Lusenti
Co-founder & CTO @ Digital Attitude Srl

twitter.com/Lanzone31
github.com/lusentis

Amazon DynamoDB

2018 Updates

Amazon DynamoDB

Amazon DynamoDB

Global Tables

Amazon DynamoDB Global Tables

Use Case #2

Amazon DynamoDB Global Tables

Use Case #1

Latency?

Amazon DynamoDB Global Tables

• 1-click, fully managed (serverless!)

• multi-region

• multi-master

Amazon DynamoDB Global Tables

{

When an application writes data to a replica table in one region,

DynamoDB automatically propagates the write to the other replica tables, within seconds.

Eventual consistency in a few seconds!

Amazon DynamoDB Global Tables

A DynamoDB Global Table consists of multiple Replica Tables, max one per region, that DynamoDB treats as a single table.

{

Amazon DynamoDB Global Tables

Performance:

• same single-digit millisecond latency for regional access

• reasonable price
  (~50% more than standard WCU, ask Alex)

• plan the appropriate write capacity
  (2x, auto scaling is highly recommended)

Demo :)

Amazon DynamoDB Global Tables

• tables must be empty

• tables must have streams enabled

Requirements:

• tables must have the same name

Amazon DynamoDB Global Tables

Restrictions:

• not supported by CloudFormation

• no consistent read support*

• last writer wins conflict resolution

• up to 1 replica per region

Amazon DynamoDB

Developer Guide: https://goo.gl/NFThSt

FAQs: https://aws.amazon.com/dynamodb/faqs

Pricing: https://aws.amazon.com/dynamodb/pricing

"How to Build a Regionally Distributed Serverless Application" https://www.youtube.com/watch?v=6uijFRFURPQ

Demo source code: https://github.com/lusentis/serverless-talks