Comment by SomeUserName432

> But I am not a storage/backend engineer, so maybe I don't understand the target use of Redis.

We use it to broadcast messages across horizontally scaled services.

Works fine, probably a better tool out there for the job with better delivery guarantees, but the decision was taken many years ago, and no point in changing something that just works.

It's also language agnostic, which really helps.

We use ElasticCache (Valkey i suppose), so most of the articles points are moot for our use.

Were we to implement it from scratch today, we might look for better delivery guarantees, or we might just use what we already know works.