Yeah, some details on implementation would have been welcome. I'm not sure how often "thundering herd" is actually a problem for your cache, but I could defini

Yeah, some details on implementation would have been welcome. I'm not sure how often "thundering herd" is actually a problem for your cache, but I could definitely see this being a useful feature to add to a caching system. Even just a way to tell Redis that something will exist there soon and to delay response until it arrives would be nice. (In essence, a Promise.)