A persistent storage system

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  1. 89edb22 cloud_sync: upload local commits in batches by Przemyslaw Pietrzkiewicz · 6 days ago master
  2. e58452d cloud_sync: respect batch ordering in GetCommits() calls. by Przemyslaw Pietrzkiewicz · 6 days ago
  3. 4cdefaa don't attempt to write config info when running tests and benchmarks by Przemyslaw Pietrzkiewicz · 6 days ago
  4. 02836ef Remove TrackCallback. by Benjamin Lerman · 6 days ago
  5. 613814a Serialize GetSnapshot and Put calls. by Benjamin Lerman · 6 days ago
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Ledger

What is Ledger?

Ledger is a distributed storage system for Fuchsia.

Each application (or more precisely, each component) running on behalf of a particular user has a separate data store provided and managed by Ledger, and vended to a client application by Fuchsia framework through its component context.

The data store for the particular component/user combination is private - not accessible to other apps of the same user, and not accessible to other users of the same app.

Each data store is transparently synchronized across devices of its user through a [cloud provider]. Any data operations are made offline-first with no coordination with the cloud. If concurrent modifications result in a data conflict, the conflict is resolved using an app-configurable merge policy.

Each data store is organized into collections exposing a key-value store API called pages. Page API supports storing data of arbitrary size, atomic changes across multiple keys, snapshots and modification observers.

See docs for documentation.

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