Mastodon will no longer support Redis Namespaces. The reasons are fully valid. Redis (or, more specifically, Valkey or KeyDB) is lightweight software that is easy to install/manage, so separation is always a good thing.
However, I read that many admins will face problems because they use Redis "in the cloud" and, therefore, have a single instance. Unfortunately, this is also a side effect of the "cloud," meaning the loss of control over your own software.
On FreeBSD, a thin jail with "Redis" takes up very little space and resources.
#OwnYourData – in the long run – always pays off.
