Conflict-free Replicated Data Types (CRDTs) are a foundational technology for modern collaborative applications like Google Docs and Figma. This article provides a detailed engineering perspective on implementing CRDTs using the Replicated Growable Array (RGA) algorithm. It discusses data structure choices, conflict resolution strategies, and performance considerations such as memory usage and merge complexity. The practical insights are valuable for developers building real-time collaboration features or distributed systems that require eventual consistency. The focus on RGA, a popular CRDT variant, makes this particularly relevant for teams working on text-based collaborative editing.
A deep dive into implementing CRDTs with the RGA algorithm for real-time collaborative editing, covering engineering trade-offs and performance.