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Alternatives · Key-Value & Cache

Valkey alternatives (2026)

Valkey: BSD-3 forever-OSS Redis protocol. Fork lane, not a speed upgrade.

Its Catch: Forever-OSS Redis-protocol fork lane, not Redis but faster.

Below: 4 free or free-tier tools from the same category (key-value stores and caches), free and open source first, then the closest match by shared tags. Each keeps its own Catch.

  1. 1.RedisThe in-memory data store everyone uses

    Free / OSS · RSALv2/SSPLv1/AGPLv3 · 77k GitHub stars

    VerdictThe default choice for caching and session storage.

    CatchLicense: not MIT. Since Redis 8 the server is tri-licensed RSALv2 / SSPLv1 / AGPLv3 at your choice — AGPLv3 is the only OSI option and carries network copyleft; 7.4–7.x was RSALv2/SSPLv1 only. If you need BSD-3 Redis-protocol, look at Valkey. Memory-bound storage is expensive at scale. Persistence options have tradeoffs. Clustering adds complexity.

  2. 2.etcdApache-2.0 Raft key-value store underneath Kubernetes

    Free / OSS · Apache-2.0 · 52.4k GitHub stars

    VerdictThe proven store for cluster coordination and config — keep it small and run it as a proper cluster.

    CatchIt is built for small, strongly consistent data, not as a message queue, cache or bulk store: values and total database size are meant to stay small, and every write goes through consensus. Production means running a cluster of three or five nodes on fast disks and handling backups, compaction and defragmentation yourself. For an app database, use Postgres; reach for etcd when you need coordination.

  3. 3.GarnetMIT Redis-protocol cache-store from Microsoft Research

    Free / OSS · OSS/MIT · 12.1k GitHub stars

    VerdictA serious MIT alternative to Redis when throughput per box matters — test your command set first.

    CatchRESP compatibility is not full Redis: check your exact commands and modules against Garnet's API docs before swapping it in. Custom extensions are written in C#/.NET, so this fits best in a .NET team. The headline latency numbers come from the project's own benchmarks on Azure VMs. The managed Azure Cosmos DB Garnet Cache is a separate paid service; the OSS server is free.

  4. 4.UpstashServerless Redis and Kafka

    Free tier · Freemium

    VerdictRedis that fits the serverless model perfectly.

    CatchHTTP adds latency compared to native Redis protocol. High-throughput workloads get expensive. Some Redis features are not available.

FAQ

What are the best free alternatives to Valkey?
Redis, etcd, Garnet, Upstash. All are reviewed on Stack Gems in the same category (key-value stores and caches); 3 free or open source, 1 hosted with a real free tier.
What is the catch with Valkey?
Forever-OSS Redis-protocol fork lane, not Redis but faster.
Is there an open-source alternative to Valkey?
Yes: Redis (RSALv2/SSPLv1/AGPLv3), etcd (Apache-2.0), Garnet (OSS/MIT).

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