You're reading from Amazon DynamoDB - The Definitive Guide Explore enterprise-ready, serverless NoSQL with predictable, scalable performance

Product type Paperback

Published in Aug 2024

Publisher Packt

ISBN-13 9781803246895

Length 414 pages

Edition 1st Edition

Languages

Java

Tools

AWS

Concepts

Databases

Author (1):

Aman Dhingra

View More author details

Table of Contents (24) Chapters

Preface

1. Part 1:Introduction and Setup

2. Chapter 1: Amazon DynamoDB in Action FREE CHAPTER

3. Chapter 2: The AWS Management Console and SDKs

4. Chapter 3: NoSQL Workbench for DynamoDB

5. Part 2: Core Data Modeling

6. Chapter 4: Simple Key-Value

7. Chapter 5: Moving from a Relational Mindset

8. Chapter 6: Read Consistency, Operations, and Transactions

9. Chapter 7: Vertical Partitioning

10. Chapter 8: Secondary Indexes

11. Part 3: Table Management and Internal Architecture

12. Chapter 9: Capacity Modes and Table Classes

13. Chapter 10: Request Routers, Storage Nodes, and Other Core Components

14. Part 4: Advanced Data Management and Caching

15. Chapter 11: Backup, Restore, and More

16. Chapter 12: Streams and TTL

17. Chapter 13: Global Tables

18. Chapter 14: DynamoDB Accelerator (DAX) and Caching with DynamoDB

19. Part 5: Analytical Use Cases and Migrations

20. Chapter 15: Enhanced Analytical Patterns

21. Chapter 16: Migrations

22. Index

Why subscribe?

23. Other Books You May Enjoy

Understanding consistency and conflict resolution

In this section, we’ll understand the consistency model of DynamoDB global tables, followed by the conflict resolution protocols.

Cross-region consistency

DynamoDB global tables use asynchronous replication to propagate updates across regions. When a write operation is performed on a global table, it is first written to the local table of the region where the write operation was initiated. Then, the change is asynchronously propagated to the replica tables in other regions. This asynchronous replication allows for lower latencies and higher availability as updates can be processed locally without the need to wait for confirmation from other regions.

A common analogy for asynchronous replication is sending a letter through the mail. When you send a letter, you drop it off at your local post office, and it is then delivered to the recipient’s local post office, where it is finally delivered to the recipient. The...