Multi-master hardly comes for free in terms of complexity or performance, you're at the mercy of latency. Either host the second master in the same building, in

Multi-master hardly comes for free in terms of complexity or performance, you're at the mercy of latency. Either host the second master in the same building, in which case the redundancy is an illusion, or host it somewhere else in which case watch your write rate tank Asynchronous streaming to a truly redundant second site often makes more sense