MeridianDB — Realtime Multiplayer Sync

A local-first sync engine powered by CRDTs. Open two tabs, edit simultaneously, go offline, reconnect — watch deterministic conflict resolution happen live.

Alice

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Bob

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System ready. Field-level CRDT engine active.

How It Works

        Browser Client

          → MeridianDB Core

          → CRDT Layer (HLC + LWW)

          → Hybrid Logical Clock

          → Sync Transport (WebSocket)

          → PostgreSQL / SQLite

Performance

HLC now() 20M ops/s

LWWMap merge 870K ops/s

100K merges 119ms

10K docs memory 12MB

Field-level CRDT ✅

WASM-ready ✅