Hacker News Reader

> Given the dependency in question is Redis, such a solution is probably exasperated by the fact Redis hasn't really had a decent HA solution.

Redis sentinel[0] is the HA solution for redis for quite some time.

That page says this:

Sentinel + Redis distributed system does not guarantee that acknowledged writes are retained during failures,

I haven't heard good things about Redis Sentinel nor am I sure of their failure modes, which is why I wouldn't describe it as decent.

I haven't kept up to date on "Sentinel 2" that was launched with 3.0 so the situation might have changed.