I have to say that I'm not hugely convinced. I don't really think that being able to pull out the keys before or after a prefix is particularly impressive. That is the basis for database indices going back to the 1970s after all.
Perhaps the use-cases you're talking about are very different from mine. That's possible of course.
But for me, often the slow speed of listing the bucket gets in the way. Your bucket doesn't have to get very big before listing the keys takes longer than reading them. I seem to remember that listing operations ran at sub-1mbps, but admittedly I don't have a big bucket handy right now to test that.
Perhaps the use-cases you're talking about are very different from mine. That's possible of course.
But for me, often the slow speed of listing the bucket gets in the way. Your bucket doesn't have to get very big before listing the keys takes longer than reading them. I seem to remember that listing operations ran at sub-1mbps, but admittedly I don't have a big bucket handy right now to test that.