This is going to come across as dismissive, I don't mean it to - I'm sure im missing something.
Is this more than a key value store with TTLs? Is it the UI over the top, the CMS that differentiates this from something like redis?
You could think of this as Redis hosting (configured to be durable!) + UI with features like version history, lightweight type checking (and potential for user accounts, schema enforcement) + client libraries on a variety of languages for super easy install / integration with all of your frontends. The libraries are smart with things like caching + a team focused on improving this feature set / functionality.