{"repo":"zepdb/zeppelin","free":true,"listed":false,"github":"https://github.com/zepdb/zeppelin","clone":"git clone https://github.com/zepdb/zeppelin.git","description":"Open-source, S3-native vector and full-text search engine. Fast, cheap, self-hostable.","language":"Rust","stars":43,"topics":["bm25","database","fulltextsearch","objectstorage","s3","vector-database","vector-search"],"license":"Apache-2.0","category":"databases-storage","readme_excerpt":"Zeppelin An S3-native vector search engine. Object storage is the source of truth. Nodes are stateless. --- Why Zeppelin Most vector databases replicate your data across SSD-backed nodes and keep indexes memory-resident — you pay for that fleet whether you query it or not. Zeppelin stores everything (vectors, indexes, WAL, manifest) in object storage and keeps nodes stateless. A warm dense query is one conditional manifest GET plus two bounded waves of parallel range reads — a quantized coarse scan, then an exact rerank — so compute scales with query volume, storage scales at object-store prices, and any node, including one that just booted, can serve any namespace. There is no rebalancing, no replica fleet, and nothing to lose when a node dies. The design target is recall parity with memory-resident engines at structurally lower cost, not peak QPS. Features - S3-native -- Object storage is the single source of truth - Stateless nodes -- Any node can serve any query - IVF indexing -- Scale-aware IVF-Flat partitioning and Hierarchical ANN - Quantization -- 2-bit Extended-RaBitQ with exact f32 rerank (production default), SQ8 (4x), PQ (16-32x), and f16 storage - BM25 full-text search -- Inverted indexes with configurable tokenization, stemming, and multi-field rank by expressions (opt-in, see below) - Late-interaction retrieval -- Multi-vector MaxSim with asynchronous semantic enrichment and RRF fusion - Bitmap pre-filters -- RoaringBitmap indexes for sub-millisecond attribute ","default_branch":null,"files":null,"tree":[],"storefront":"/r/zepdb","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/zepdb/zeppelin/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}