crdt-playground | generic implementation of Victor Grishchenko

crdt-playground is a Swift library. crdt-playground has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

A generic implementation of Victor Grishchenko's Causal Tree CRDT, written in Swift. State-based (CvRDT) implementation. Features many tweaks, including a site identifier map, atom references, and priority atoms. Uses Lamport timestamps instead of "awareness". Two pieces of companion software are included. The first is a macOS app that simulates device sync over a hypothetical network with any arbitrary topology and any number of partitions. The app is designed for testing the resiliency of a CRDT under difficult network conditions and includes editing support for text and vector graphics. The second is a very basic, CT-based text editor for iOS that works equally well online and offline, syncs documents over CloudKit, and supports real-time collaboration over CloudKit Sharing. No extra servers required! (Such is the glory of CRDTs.). Performance is good: everything should be O(nlogn) or faster.