MongrelDB Architecture: From WAL to Hybrid Search
An end-to-end technical walkthrough of MongrelDB, from transaction validation, WAL durability, MVCC, and PAX columnar runs to DataFusion SQL and hybrid retrieval.
Hybrid-Search
4 posts filed under hybrid-search.
4
Posts
Aug 2026
Latest
HNSW Inside an Embedded Vector Database
How an embedded vector database keeps HNSW candidates, operational rows, SQL filters, sparse retrieval, and exact reranking inside one Rust engine.
FM-Index Substring Search in a Transactional Database
MongrelDB uses a Burrows-Wheeler transform and wavelet-tree FM-index for exact substring candidates that combine with SQL, vectors, ranges, and equality filters.
MongrelDB: What It Is, What It Isn't, and Where It Fits
An honest map of where MongrelDB fits among embedded databases: operational writes, columnar scans, hybrid retrieval, encryption, SQL, and single-node limits.