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@pebbl/core

v0.1.1

Published

15 days ago

In-memory store, Last-Write-Wins conflict resolution, append-only log persistence, and recovery for Pebble

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pebble store lww conflict-resolution persistence event-sourcing log

@pebbl/core

In-memory state machine, Last-Write-Wins (LWW) conflict resolution, append-only NDJSON mutation log, and crash recovery pipeline for Pebble.

This package is completely decoupled from the network layer.

Installation

pnpm add @pebbl/core

Features

Store: In-memory state machine maintaining current winning values, full mutation history index, version vectors, and monotonic sequence counters.
LWW Conflict Resolution: Deterministic multi-dimensional comparison:
1. Highest timestamp wins.
2. If equal, lexicographical nodeId tiebreak.
3. If same node, highest sequence tiebreak.
Append-Only Mutation Log: MutationLog with fsync durability and corrupted tail recovery (skips incomplete lines written during power loss/abrupt crashes).
Snapshots & Metadata: Point-in-time state snapshots and atomic metadata persistence with crash-safe temporary file swapping.
Recovery Pipeline: recover() automatically restores state from the latest snapshot and replays subsequent log mutations.

License

MIT