zustand-sync is a lightweight middleware designed to synchronize zustand stores across multiple clients using JSON Patch for efficient state updates. It integrates easily into React projects with a simple setup process and supports various transport layers, including WebSockets, with features like authentication, conflict resolution, and offline support. A sequence diagram illustrates the workflow of state synchronization between clients.

The article discusses how to build robust React applications using Zustand for state management and Immer for handling immutable state updates. It emphasizes the advantages of combining these two libraries to enhance performance and simplify state management in complex applications. Practical examples and best practices are provided to guide developers in implementing these tools effectively.