Replication
The process of maintaining copies of data across multiple nodes. Provides fault tolerance, high availability, and improved read performance in distributed systems.
Replication: Copies for Availability
Keeping identical copies of data across nodes so reads scale and failures survive.
Replication in Production: Streams and Quorums
Log-based replication, quorum reads/writes, and operational lag management.
Advanced Replication: Conflict Resolution and Consistency Models
Convergent state, CRDTs, and the consistency menu in depth.
Replication: Review & Mastery Quiz
Scenario questions on models, quorums, and conflicts.
Free Books & Guides
Refactoring.Guru — Replication
The definitive modern guide to the Replication pattern. Clear explanations, UML diagrams, real-world analogies, and code examples in multiple languages.
SourceMaking — Replication
A comprehensive companion guide covering the Replication pattern with detailed rules of thumb, criticisms, and robust code snippets.
GoF Design Patterns — Replication
The original Gang of Four book describing the pattern. Available in the "Design Patterns: Elements of Reusable Object-Oriented Software" on Wikipedia.
Official Documentation
Video Courses
freeCodeCamp — Design Patterns Course
A comprehensive multi-hour video course covering all major design patterns with implementations in JavaScript and TypeScript.
Design Patterns in Modern JavaScript Playlist
YouTube playlist covering creational, structural, and behavioral patterns with clear code walkthroughs.
Web Dev Simplified — Replication
Clear, concise video tutorials covering design patterns with practical examples.
Practice & Examples
Awesome Low-Level Design (GitHub)
A curated collection of free LLD resources, pattern implementations, and interview problems across multiple languages.
Design Patterns Implementation (GitHub)
The most popular open-source collection of design pattern implementations with detailed explanations.
Refactoring.Guru Examples in Replication
Code examples of the Replication pattern in TypeScript, Python, Java, and more.