Keycloak Redis Cache extension

Extending the server
1

Hello community,

We are delighted to announce the release of the first version of Redis Cache extension.

We’re looking for any feedback, bugs and improvement ideas.

2

This was presented at Keycloak DevDay 2026:

At this point, it should be considered alpha software, and we are actively looking for help with testing, validation and improvement.

3

So far, there are no plans for it to be supported by Keycloak in the near future.

4

Thanks for the update @embesozzi . We saw that comment on the PR to include it in Keycloak. For clarification, that wasn’t the same as our extension, and as far as we could tell, wasn’t a serious effort to make a useful implementation.

The principal reason we decided to develop this as an extension rather than PR to Keycloak core was the expectation that it would wouldn’t be integrated/supported immediately. We did the same thing with our organizations extension, waited 3 years for them to quietly change their minds, and then they copied the implementation.

We’ve got a couple of large companies currently testing the Redis implementation. We’re aware that it changes the operational profile of Keycloak, so it’s not going to fit everyone’s use case. However, I think there’s value in sharing approaches that work for specific use cases as a mechanism to get the community thinking about possibilities.