[mrkurt]

1. Cold start times are wildly variable. They can be <1s for optimized, fast booting docker images. We actually mask cold start time as much as possible, though, so you'll almost never see one.

2. There's no hard limit. We've had 8GB images running (that I know of). Cold starts can be pretty bad on those just because pulling down an 8gb filesystem is slow.

3. Also no hard limit. I'm curious what you're doing though! Feel free to email me: kurt at fly.io