#database-implementations

Embedded retrieval library built on Parquet. Fast, efficient, and scalable.

High-performance, time-indexed object storage for robotics and industrial IoT

🦔 Fast, lightweight & schema-less search backend. An alternative to Elasticsearch that runs on a few MBs of RAM.

Unified observability for logs, metrics and traces — low overhead instrumentation (Rust, Unreal Engine 5), OTLP ingestion, SQL analytics on DataFusion over Parquet, presentation through notebooks, Grafana and Python. Self-hosted.

Durable Streams API

Grafeo is a pure-Rust, high-performance graph database that can be embedded as a library or run as a standalone database, with optional in-memory or persistent storage. Grafeo supports both LPG and RDF and all major query languages.

DoltLite - Version Controlled SQLite

🗻 Log-structured, embeddable key-value storage engine written in Rust

A low-level, versioned, embedded, ACID-compliant, key-value database for Rust

K.I.S.S. LSM-tree implementation in safe Rust

Distributed timestamp & sequence oracle for Rust — strictly monotonic timestamps and gapless, dense ID sequences over gRPC, replicated with pluggable consensus.

An embedded, in-memory, lock-free, transaction-based, key-value database engine

JSON support for DataFusion (unofficial)

A DynamoDB emulator in Rust, backed by SQLite. Starts in milliseconds as a single static binary, and is verified against real AWS by a public conformance suite. Runs as an HTTP server, an MCP server for coding agents, an embeddable library, or in the browser via WebAssembly.

Regolith - ACID, performance oriented, embedded key-value database engine for edge systems