Yeah. I do think that Redis has suffered from some mission creep, including a deprecated misadventure in to a mode where values could be stored on disk and only

Yeah. I do think that Redis has suffered from some mission creep, including a deprecated misadventure in to a mode where values could be stored on disk and only temporarily cached in memory. Maybe that's what Cal and his colleagues were using it for at the time, but the claim that it started as a volatile cache is just not true. Interesting datastructures and the fork based persistence model were there from the start.