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> a CouchDB like DB with native support for a CRDT toolkit such as Yjs or Automerge would be awesome, when syncing mirrors you would be able to just exchange the document state vectors - the changes to it - rather than the whole document

syncedstore -> https://syncedstore.org/docs/sync-providers#y-indexeddb-for-...

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SyncedStore is a brilliant Yjs reactive store for SPAs, it’s not a database. It like an automatically distributed real-time reactive redux/vuex for collaborative apps.

The y-IndexedDB you linked to is actually part of the Yjs toolkit, it is a way of persisting a Yjs document in the browser for offline editing in a PWA. It doesn’t provide a way to sync a whole (or subset of a) database like Couch/PouchDB does. It’s a very important part of the Yjs toolkit but doesn’t do what I’m describing (it’s just a key value store).

If all of your data is in yjs, then you can use syncedstore to efficiently send updates between clients and y-IndexedDB to store the data when the app is off. Its not exactly what was asked for, no, but depending on the application that setup can be substituted for a central database.

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