head to head · open source
etcd vs rocksdb
etcd has 52,270 GitHub stars, 10,506 forks, 351 open issues and last shipped yesterday. rocksdb has 32,108 stars, 6,931 forks, 1,645 open issues and last shipped 2 days ago. etcd leads on adoption by 63% (52,270 vs 32,108 stars). etcd is written in Go under Apache-2.0; rocksdb is written in C++ under GPL-2.0. etcd has attracted 20% as many forks as stars, rocksdb 22%. etcd was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (database), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| etcd | rocksdb | |
|---|---|---|
| GitHub stars | ★ 52K | ★ 32K |
| License | Apache-2.0 | GPL-2.0 |
| Written in | Go | C++ |
| Last push | 2026-09-18 | 2026-09-17 |
| Forks | ⑂ 11K | ⑂ 6.9K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick etcd if
- You weight community size — 52K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick rocksdb if
- You want the rocksdb feature set and don't need the biggest community
- You prefer the GPL-2.0 license terms
- Your stack matches C++
- You evaluated both and rocksdb fits your workflow better
About etcd
etcd is an Apache 2.0 licensed, Go written distributed key value store that holds the most critical data of a distributed system in a Raft replicated log, aimed at the platform and infrastructure engineers who must keep that control plane data consistent and available.
About rocksdb
RocksDB is an embeddable, persistent key value store written in C++ and developed by the Facebook Database Engineering Team. It is a library rather than a standalone server, and it forms the core building block for a fast key value server. The project builds on earlier work on LevelDB by Sanjay Ghemawat and Jeff Dean, and it lives in the systems infrastructure and database ecosystem, carrying the topics database and storage engine. It has been public for roughly fourteen years and is dual licensed under GPLv2 and Apache 2.0, so a user may select either license at their option.
read the full rocksdb overview →
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Frequently asked questions
Is etcd or rocksdb more popular?
etcd has 52,270 GitHub stars and rocksdb has 32,108. etcd has the larger community by that measure.
Are etcd and rocksdb free?
Both are open source. etcd is licensed under Apache-2.0 and rocksdb under GPL-2.0. Neither carries a licence fee.
What is the difference between etcd and rocksdb?
etcd is written in Go and rocksdb in C++. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, etcd or rocksdb?
Choose etcd if you want the larger community (52,270 stars) or its Apache-2.0 licence terms. Choose rocksdb if its feature set, stack or GPL-2.0 licence fits better. Both are self-hostable.