Is there a lib or a pattern for synchronizing a complex JSON over the network ?

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  • automerge

    A JSON-like data structure (a CRDT) that can be modified concurrently by different users, and merged again automatically.

  • liveblocks

    The all-in-one toolkit to build collaborative products like Figma, Notion, and more.

    You should look at CRDT. I just saw this a few days ago:

  • Appwrite

    Appwrite - The Open Source Firebase alternative introduces iOS support . Appwrite is an open source backend server that helps you build native iOS applications much faster with realtime APIs for authentication, databases, files storage, cloud functions and much more!

  • yjs

    Shared data types for building collaborative software

    I think you might be looking for a CRDT implementation. Yjs is a popular one:

  • sharedb

    Realtime database backend based on Operational Transformation (OT)

    This is called Operational Transformation, and there are a few libraries to help with it. One that looks fairly mature is

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