Keycloak vs Redis
The ultimate side-by-side head-to-head analysis for 2026.
Short answer
- Price: both start at Free.
- How to start: both are free.
These lines are generated from the pricing we track, not from a paid placement. We do not publish a quality score, because we do not have one we can stand behind. They cannot tell you which tool fits your workflow — the sections below are there for that. How we score tools.
Keycloak
Redis
Category
Developer Tools
Developer Tools
Base Price
Free
Free
Public API
Yes
Yes
Mobile app
No
No
Open source / self-hostable
Yes
Yes
SSO (SAML)
Yes
No
Choose Keycloak if:
Organisations that need enterprise identity without a per-user bill.
Choose Redis if:
Backend Engineers and DevOps Professionals.
Keycloak: pros & cons
- Full identity server at no licence cost
- Standards support including SAML and OIDC
- Complete control over user data
- Operating it is a real responsibility
- Administration console is dense
- Upgrades need care
Redis: pros & cons
- Incredible Speed: Performs millions of operations per second with near-zero latency.
- Versatile Data Types: Supports strings, hashes, lists, sets, and sorted sets.
- Pub/Sub Support: Built-in messaging system for real-time application communication.
- Persistence Options: Can save data to disk while maintaining in-memory speed.
- RAM Limits: Your dataset size is limited by the amount of RAM available on your server.
- Complexity: Managing distributed clusters can be difficult for small teams.
- Data Loss Risk: If not configured correctly, an abrupt shutdown can lead to data loss.
Our verdict on Keycloak
The serious open-source answer to Auth0. Budget for the operations, because the licence saving is not free.
Our verdict on Redis
The indispensable speed layer for any modern, high-traffic web application.