I think it's fairly obvious but trying to re-balance any system that already has load issues is probably not a recipe for success. This cropped up in the "Don'

I think it's fairly obvious but trying to re-balance any system that already has load issues is probably not a recipe for success. This cropped up in the "Don't use Mongo" FUD from a few years back. Eliot from MongoDb responded: https://news.ycombinator.com/item?id=3202959 https://news.ycombinator.com/item?id=3202959 In an ideal world, you'd monitor and plan your capacity proactively - I don't think there's really any magic button for - "My system is at capacity - horizontally scale it now, with no downtime!".