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RocksDB

Free#5 of 30 in Embedded DatabasesKey-Value Databases

RocksDB: A focused open-source engine for high-throughput embedded key-value workloads. Ranked #5 of 30 in Embedded Databases by our editors (8.5/10); pricing: Open source; best for high-throughput embedded key-value workloads.

8.5/10Editor score

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At a glance

Editor score
8.5 / 10
Pricing
Open source
Best for
High-throughput embedded key-value workloads
Paid from
Free
Data synchronization
No
Facts checked
20 Sep 2026

Where it wins
- Point lookups and range scans for byte-stream keys and values
- Multi-threaded compactions with configurable compression and storage options
- Backup, checkpoint, snapshot, and database-management APIs
Where it doesn't
- Replication is not built in and requires application-built logic
- The API query interface is focused on key-value access
- It is an embeddable C++ library rather than a hosted product

Our verdict on RocksDB

RocksDB is an open-source C++ library for applications and server workloads that need persistent key-value storage. It stores arbitrarily sized byte-stream keys and values, supports point lookups and range scans, and can serve as a building block for storage engines and caches. Its log-structured merge-tree design is aimed at low-latency storage across flash, RAM, and high-speed disks. It fits developers who want to embed storage directly into software across Linux, macOS, Windows, iOS, FreeBSD, OpenBSD, AIX, and Solaris.

Its strongest technical focus is storage-engine depth. Multi-threaded compactions support the log-structured merge-tree design, while configurable compression and storage options provide control over how data is managed. The library also includes backup, checkpoint, snapshot, and database-management APIs. Transaction-log APIs can support application-built replication, and encryption is exposed through encryption-provider and encrypted-filesystem APIs. These capabilities make RocksDB suitable when an application needs direct control over embedded persistence rather than a hosted database service.

The main trade-off is that application architecture remains responsible for important surrounding functionality. RocksDB does not provide built-in replication, and synchronization support is not included as a database capability. Its API query interface is also centered on key-value operations rather than a broader query model. Choose RocksDB when your team needs an embeddable, persistent engine with range scans, compaction controls, backups, and broad platform support. Choose a different option when built-in replication, synchronization, or a hosted operating model is a priority.

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RocksDB pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on rocksdb.org

RocksDB fact sheet

Free plan	Not verified
Paid from	Free
Supported platforms	Linux, macOS, Windows, iOS, FreeBSD, OpenBSD, AIX, Solaris
Database model	Key-value
Query interface	Api
Encryption	Yes
Data synchronization	No
Maximum database size	Not verified
Deployment	Self-hosted
Platforms	Windows, macOS, Linux, iOS
Support	Docs, Community
Built for	Small business, Mid-market, Enterprise (editorial estimate)
Pricing	Open source
Website	rocksdb.org
Facts checked	20 Sep 2026

Alternatives to RocksDB

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RocksDB vs the competition

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Also Ranked In

RocksDB is ranked in 2 of our directories.

#12Key-Value Databases31 tools ranked

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Featured on iTechGuides

RocksDB is listed in our Embedded Databases directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update