Top 6 C++ Key Value Store Projects

foundationdb

21 13,971 9.8 C++

FoundationDB - the open source, distributed, transactional key-value store

Project mention: Figma's Databases team lived to tell the scale | news.ycombinator.com | 2024-03-14

Actually, Apple does this for iCloud! They use FoundationDB[1] to store billions of databases, one for each user (plus shared or global databases).
See: https://read.engineerscodex.com/p/how-apple-built-icloud-to-...
Discussed on HN at the time: https://news.ycombinator.com/item?id=39028672
[1]: https://github.com/apple/foundationdb https://en.wikipedia.org/wiki/FoundationDB

incubator-pegasus

5 1,944 9.4 C++

Apache Pegasus - A horizontally scalable, strongly consistent and high-performance key-value store
WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
speedb

5 822 9.3 C++

A RocksDB compliant high performance scalable embedded key-value store

Project mention: FLaNK AI - 01 April 2024 | dev.to | 2024-04-01

ustore

15 486 9.6 C++

Multi-Modal Database replacing MongoDB, Neo4J, and Elastic with 1 faster ACID solution, with NetworkX and Pandas interfaces, and bindings for C 99, C++ 17, Python 3, Java, GoLang 🗄️
SwiftStore

0 122 0.0 C++

Key-Value store for Swift backed by LevelDB
CalicoDB

2 34 8.3 C++

A tiny embedded, transactional key-value database 🐱

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).