Anything that was new in Redis 7 is not currently in KeyDB.  This is a
decent list of features I found that would be impacted.

https://www.instaclustr.com/blog/redis-7-new-features/

KeyDB has it on their roadmap to merge in the latest features from Redis 7
but that's not complete yet (nor can I find any published status on that).
EPEL doesn't currently provide Redis for 8/9 because it got pulled in
directly by RH.  RHEL 9 does have a module for redis 7 but the default is
6, so that's easy at least.  There should be no problems with adding KeyDB
to EPEL 8/9 - in fact it doesn't even conflict with redis (though
keydb-devel will conflict with redis-devel as keydb-devel still uses
identical names of some libraries it produces).

Honestly trying to replace redis with KeyDB in Fedora would be a step
backwards and cause headaches so I don't think it's feasible, at least
until redis v7 features are merged into KeyDB.

On Thu, Mar 21, 2024 at 1:05 PM Scott Williams <vwfoxg...@gmail.com> wrote:

> Assuming KeyDB gets accepted (it looks close from the Bugzilla review), we
> should obsolete redis for KeyDB in Fedora 40+ and consider eventually doing
> likewise with EPEL as well, since we aren't going to be able to ship any
> redis patches moving forward.  I feel less strongly about that for EPEL as
> for Fedora.  As a Fedora redis user, personally, having KeyDB in-place
> replace redis on upgrade to Fedora 40 seems like the best possible route
> moving forward to limit end-user disruption and technical debt for Fedora.
>
> As long as KeyDB's multi-threading isn't enabled out of box, it should
> essentially be equivalent to redis-6 as I understand it.  We're currently
> shipping redis-7.2.4 in Fedora 39.  Are there any potential redis-7
> specific compatibility problems with KeyDB migration?
> --
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-- 
Jonathan Wright
AlmaLinux Foundation
Mattermost: chat <https://chat.almalinux.org/almalinux/messages/@jonathan>
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