key-value

For developers, who are building real-time data-driven applications, Redis is the preferred, fastest, and most feature-rich cache, data structure server, and document and vector query engine.

Distributed reliable key-value store for the most critical data of a distributed system

A flexible distributed key-value database that is optimized for caching and other realtime workloads.

Distributed transactional key-value database, originally created to complement TiDB

Fast key-value DB in Go.

An embedded key/value database for Go.

Apache ZooKeeper

Garnet is a remote cache-store from Microsoft Research that offers strong performance (throughput and latency), scalability, storage, recovery, cluster sharding, key migration, and replication features. Garnet can work with existing Redis clients.

Open-source, low-latency key/value engine built on Valkey with query subscriptions and hierarchical storage tiers.

immudb - immutable database based on zero trust, SQL/Key-Value/Document model, tamperproof, data change history

Lightweight, fast and reliable key/value storage engine based on Bitcask.

Lightweight and blazing fast key-value database written in pure Dart.

A generic dynamo implementation for different k-v storage engines

An ultra-lightweight database that supports key-value and time series data | 一款支持 KV 数据和时序数据的超轻量级数据库

Lightweight IoT device information storage solution: KV/IAP/LOG. | 轻量级物联网设备信息存储方案：参数存储、在线升级及日志存储 ，全新一代版本请移步至 https://github.com/armink/FlashDB

ArcadeDB Multi-Model Database, one DBMS that supports SQL, Cypher, Gremlin, HTTP/JSON, MongoDB and Redis. ArcadeDB is a conceptual fork of OrientDB, the first Multi-Model DBMS. ArcadeDB supports Vector Embeddings.

A streaming multimodal database for Edge AI, and Edge Computing.

Coltt is a vector database that supports Multi-Vector Search, high-performance HNSW, FLAT and quantization, and enables fast searches through sophisticated internal data shard design.

Sorted Data Structure Server - Treds is a Data Structure Server which returns data in sorted order and is the fastest prefix search server. It also persists data on disk.