RocksDB

RocksDB is ranked #12 of 30 in embedded databases on Freedom251. It runs on API, iOS, Linux, macOS, Self-hosted, Windows. There is a free plan.

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RocksDB Free Open-source C++ library · Dual-licensed under GPLv2 or Apache 2.0 github.com · 4 Oct 2026

Compared on embedded databases

Supported platforms: Linux, macOS, Windows, iOS, FreeBSD, OpenBSD, AIX, Solaris
Database model: key-value
Query interface: api
Encryption: Yes
Data synchronization: No

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RocksDB

Product: RocksDB is an embeddable persistent key-value store for fast storage.
Data model: Keys and values are arbitrary byte arrays, and keys are ordered using a user-specified comparator.
Engine: RocksDB uses a log-structured merge database design with configurable tradeoffs among write, read, and space amplification.
Performance: The project describes RocksDB as optimized for low-latency storage such as flash drives and high-speed disks.
Operations: The library supports database open and close, reads and writes, merging, and compaction filters.
Use cases: The project describes use in database storage engines, application data caching, and embedded workloads.
Integrations: The build instructions list optional compression libraries zlib, bzip2, LZ4, Snappy, and Zstandard.
Platforms: Build instructions cover Linux, macOS, FreeBSD, OpenBSD, iOS, Windows, AIX, and Solaris Sparc.
Licensing: RocksDB is available under either GPLv2 or Apache 2.0, at the user's option.
Support: The project directs users to GitHub issues for bugs and feature requests and to its Facebook group for questions and discussion.
Build requirement: The project says it depends on GCC 11 or later or Clang 10 or later for C++20 support.
Scale: The project says multi-threaded compactions make RocksDB suitable for storing multiple terabytes in a single database.
What it does: RocksDB is an embeddable, persistent key-value store for fast storage.
Storage design: It uses a log-structured database engine written entirely in C++.
Price from: Free

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Where it ranks on Freedom251

Best Embedded Databases in 2026#12 of 30
Best Key-Value Databases in 2026#5 of 29

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Sources

rocksdb.org· checked 3 Oct 2026
rocksdb.org/docs/getting-started.html· checked 3 Oct 2026
github.com/facebook/rocksdb/· checked 3 Oct 2026
github.com/facebook/rocksdb/blob/main/INSTALL.md· checked 3 Oct 2026
rocksdb.org/support.html· checked 3 Oct 2026
github.com/facebook/rocksdb/wiki· checked 4 Oct 2026
github.com/facebook/rocksdb/wiki/Platform-Requirem· checked 4 Oct 2026
github.com/facebook/rocksdb/security/policy· checked 4 Oct 2026
github.com/facebook/rocksdb/wiki/Basic-Operations· checked 4 Oct 2026
github.com/facebook/rocksdb· checked 4 Oct 2026