vs

Readyset vs Valkey

Readyset: A wire-compatible SQL cache for Postgres and MySQL that keeps cached queries fresh from replication. Valkey: The Linux Foundation's BSD-licensed fork of Redis, now the default engine on AWS and Google Cloud.

key differences

  • Readyset is primarily a relational database; Valkey is key-value.
  • Licensing: Readyset is source-available (Business Source License 1.1); Valkey is open source (permissive) (BSD 3-Clause).
  • Horizontal scaling is manual in Readyset and native in Valkey.
  • Transactions: Readyset offers none ACID; Valkey offers limited.
  • Only Readyset has joins, change data capture, materialized views.
  • Only Valkey has transactions, geospatial, stored procedures, ttl / expiry, pub/sub.

choose readyset for

  • +Offloading repetitive read queries from Postgres or MySQL
  • +Replacing Redis-based query caches with automatic invalidation
  • +Scaling read-heavy SaaS dashboards

best at · Cache, OLTP

choose valkey for

  • +Replacing Redis OSS without license concerns
  • +Application caching and session storage
  • +Rate limiting, counters and leaderboards
  • +Pub/sub fan-out and Streams-based queues

best at · Cache, Sessions, Queue

overview
Primary model
Relational
Key-Value
Also supports
–
–
Type
Database engine
Database engine
Status
Active
Active
Developer
ReadySet, Inc.
Valkey project (Linux Foundation)
First release
2022
2024
Latest version
stable-261022 (Oct 22, 2026)
9.1.3 (Oct 26, 2026)
License
Source-availableBusiness Source License 1.1
Open source (permissive)BSD 3-Clause
Free tier
✓
✓
popularity
WhichDB Score
12.7
58.0
Rank
#264
#16
GitHub stars
5.3K
27.5K
Stack Overflow questions
–
29
scale & guarantees
Comfortable data size
Medium (≤ 10 TB)
Medium (≤ 10 TB)
Horizontal scaling
Manual
Native
Multi-region
None
Read replicas
ACID
None
Limited
Consistency
Eventual
Eventual
Schema
Strict
Schemaless
Architecture
Single node, Client server
In memory, Single node, Primary replica, Distributed, Client server
deployment
Self-hosted
✓
✓
Vendor-managed cloud
✓
—
Serverless
—
—
Embedded
—
—
Edge
—
—
Clouds
AWS
AWS, Google Cloud, Oracle Cloud, Aiven, DigitalOcean, Akamai
capabilities
Transactions
—
✓
Joins
✓
—
Secondary indexes
—
—
Full-text search
—
—
Vector search
—
—
Geospatial
—
✓
JSON
—
—
Change data capture
✓
—
Triggers
—
—
Stored procedures
—
✓
Materialized views
✓
—
TTL / expiry
—
✓
Pub/Sub
—
✓
Columnar storage
—
—
In-memory
✓
✓
Durable persistence
✓
✓
Compression
—
—
Encryption at rest
—
—
Role-based access
—
✓
Time travel
—
—
Branching
—
—
Online schema changes
—
—
Streaming ingest
—
✓
Offline sync
—
—
Runs in WebAssembly
—
—
interfaces
Query languages
SQL
Redis commands (RESP), Lua
Client languages
Any Postgres/MySQL driver
Python, Java, JavaScript, Go, C#, Rust, Ruby, PHP
Best for
Cache, OLTP
Cache, Sessions, Queue, Pub/Sub

Readyset vs Valkey: FAQ

What is the difference between Readyset and Valkey?

Readyset: A wire-compatible SQL cache for Postgres and MySQL that keeps cached queries fresh from replication. Valkey: The Linux Foundation's BSD-licensed fork of Redis, now the default engine on AWS and Google Cloud. Readyset is primarily a relational database; Valkey is key-value. Licensing: Readyset is source-available (Business Source License 1.1); Valkey is open source (permissive) (BSD 3-Clause). Horizontal scaling is manual in Readyset and native in Valkey.

When should I choose Readyset over Valkey?

Choose Readyset for offloading repetitive read queries from Postgres or MySQL, replacing Redis-based query caches with automatic invalidation and scaling read-heavy SaaS dashboards. Choose Valkey for replacing Redis OSS without license concerns; application caching and session storage; and rate limiting, counters and leaderboards.

Is Readyset or Valkey more popular?

Valkey ranks #16 on the WhichDB Score (58.0/100) and Readyset ranks #264 (12.7/100). Popularity is not fit: check the requirements that matter for your project.

Are Readyset and Valkey open source?

Not in the OSI sense. Readyset is source-available: you can read the code, but the license restricts some uses, typically offering it as a competing managed service. License: Business Source License 1.1. Yes. Valkey is open source. License: BSD 3-Clause.