dejadb-store

Content-addressed embedded store with hybrid recall (Turso/SQLite) for DejaDB.

dejadb-store is the persistence and retrieval layer. It stores grains as immutable content-addressed blobs and maintains the index layer around them: dictionary-encoded triple permutations (SPO/POS, with selective OSP), entity_latest materialization, an op-log with HLC ordering and tombstones, a thread index, and CAS blobs. On top of that it provides the core memory operations — add, recall, batch, supersede, forget — plus hybrid recall (BM25 text search fused with structural lookup) and bounded graph traversal. It wraps the async Turso engine behind a synchronous API using a private current-thread runtime, so callers get a simple blocking interface.

Part of DejaDB — an embedded memory engine for AI agents. See the architecture overview.

Licensed under MIT OR Apache-2.0.