> How many files per directory has this been tested on? Not a massive number. The current DirServer implementation will likely run into problems once the corpu

> How many files per directory has this been tested on? Not a massive number. The current DirServer implementation will likely run into problems once the corpus reaches a certain size. But there can be more than one DirServer implementation, as long as it satisfies the interface. (https://godoc.org/upspin.io/upspin/#DirServer https://godoc.org/upspin.io/upspin/#DirServer)