KeyDB

Mac · Linux · Self-hosted

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Freedom report

One barScore 5.5

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely2 of 6 device platforms
DocumentedPlans, terms and facts published

KeyDB is ranked #10 of 25 in in-memory databases on Freedom251. It runs on Linux, macOS, Self-hosted.

Compared on in-memory databases

Free plan: Yes
Deployment: self-hosted
Data persistence: Yes
High availability: Yes
SQL support: No
Vector search: No
Supported data models: strings, lists, sets, sorted sets, hashes, bitmaps, HyperLogLogs, streams

Best KeyDB alternatives

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Two bars Amazon ElastiCache Free tier No. 1$6/mo6.6 Two bars Redis Insight Free tier No. 2Free6.6 One bar Aerospike Database Free tier No. 3Free6.5 One bar VMware Workstation Pro Free tier No. 4Free6.5 Two bars VoltDB Free tier No. 5Free6.5 One bar Apache Geode Free tier No. 6Free6.4

The record

Product: KeyDB is a high-performance, open-source database and a drop-in alternative to Redis.
Performance: The maker says a single node can handle over 1 million operations per second and serve data with submillisecond latency.
Data structures: KeyDB supports strings, hashes, lists, sets, sorted sets, bitmaps, hyperloglogs, geospatial indexes, and streams.
Scaling: KeyDB supports horizontal scaling through active replication or cluster mode with a sharded dataset.
Architecture: Its MVCC architecture allows snapshot queries, including SCAN and KEYS, to run concurrently without blocking existing workloads.
Replication: KeyDB supports asynchronous multi-master replication across regions using a last-write-wins method.
Persistence: KeyDB supports RDB snapshots and AOF command logging, with configurable durability preferences.
Compatibility: KeyDB is compatible with the Redis API and protocol, and Redis client libraries work with it.
Integrations: The maker lists Docker images, Ubuntu and Debian packages, CentOS RPM packages, and community Homebrew and Kubernetes Helm options.
Security: KeyDB supports TLS on client connections, replication links, and the cluster bus, as well as authentication and ACLs.
Security guidance: The maker recommends restricting network access to trusted clients and warns against exposing KeyDB directly to the internet.
Support: Support is community-based and managed by the KeyDB team at Snap; the maker says paid support is unavailable.
Intended users: The maker describes KeyDB as useful from small projects to workloads serving millions of users.
History: The project began in 2019 as a multithreaded Redis fork and found a permanent home at Snap at the end of 2021.

Where it ranks on Freedom251

Best In-Memory Databases in 2026#10 of 25

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Sources

docs.keydb.dev/docs/· checked 2 Oct 2026
docs.keydb.dev· checked 2 Oct 2026
docs.keydb.dev/docs/compatibility/· checked 2 Oct 2026
docs.keydb.dev/docs/download/· checked 2 Oct 2026
docs.keydb.dev/docs/security/· checked 2 Oct 2026
docs.keydb.dev/docs/support/· checked 2 Oct 2026
docs.keydb.dev/docs/about/· checked 2 Oct 2026
docs.keydb.dev/docs/intro-admin/· checked 3 Oct 2026
keydb.dev· checked 28 Sept 2026