Standing on shoulders: the stack that makes Floci start in ~24ms (opens in new tab)

Floci starts in 24ms and idles at 13 MiB of RAM. That number gets attention, and it tends to obscure the real story. It isn't about one clever optimization. It's about four open-source projects that have been quietly perfecting their respective jobs for years, stacked on top of each other in a way that makes the whole thing possible. Floci is a free, MIT-licensed AWS emulator. It speaks the AWS wire protocols on localhost:4566, emulates 45 services, and is verified by 1,925 SDK compatibility ...