{"repo":"outr/lightdb","free":true,"listed":false,"github":"https://github.com/outr/lightdb","clone":"git clone https://github.com/outr/lightdb.git","description":"Bare Metal Modular Database","language":"Scala","stars":64,"topics":["database","lucene","mapdb","modular","rocksdb","scala","sql","halodb"],"license":"MIT","category":"databases-storage","readme_excerpt":"lightdb Computationally focused database using pluggable stores Provided Stores Stores are grouped by deployment model: embedded stores run in-process with no external service, while server-based stores connect to a database server (local or remote). Embedded Stores Store Type Persistence Read Perf Write Perf Concurrency Transactions Full-Text Search Vector KNN Prefix Scan Notes ------------------------------------------------------------------------ -------------------- ------------- ----------- ------------ ------------- ------------------ ------------------ ------------ ----------- --------------------------------------- HaloDB KV Store ✅ ✅✅ ✅✅ 🟡 (Single-threaded write) 🟡 (Basic durability) ❌ ❌ ❌ Fast, simple write-optimized store ChronicleMap Off-Heap Map ✅ (Memory-mapped) ✅✅ ✅✅ ✅✅ ❌ ❌ ❌ ❌ Ultra low-latency, off-heap storage LMDB KV Store (B+Tree) ✅ ✅✅✅ ✅ 🟡 (Single write txn) ✅✅ (ACID) ❌ ❌ ✅ Read-optimized, mature B+Tree engine MapDB (B-Tree) Java Collections ✅ ✅ ✅ ✅ ✅ ❌ ❌ ✅ Uses BTreeMap for ordered/prefix scans RocksDB LSM KV Store ✅ ✅✅ ✅✅✅ ✅ ✅ ❌ ❌ ✅ High-performance LSM tree Lucene Full-Text Search ✅ ✅✅ ✅ ✅ ❌ ✅✅✅ ✅ (HNSW) ❌ Best-in-class full-text search engine; native block-join, spatial, and vector KNN Tantivy (via Scantivy) Full-Text Search ✅ ✅✅ ✅✅ ✅ ❌ ✅✅✅ ❌ ❌ Rust-based; FFM (JEP 442) bridge over a Tantivy lib. No native geo or block-join (use Lucene for those) SQLite Relational DB ✅ ✅ ✅ 🟡 (Write lock) ✅✅ (ACID) ✅ (FTS5) ❌ 🟡 Lightweight embedded SQL H2 Relatio","default_branch":null,"files":null,"tree":[],"storefront":"/r/outr","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/outr/lightdb/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."}