It's not clear what exactly they mean by cold start. I just ran a simple test with a worker returning hardcoded html without external requests (on a free plan):
1. First run: time_starttransfer: 0.507267s
2. Second run: time_starttransfer: 0.035244s
So it looks like at least some parts of the cold start taking much longer and aren't eliminated.
1. First run: time_starttransfer: 0.507267s
2. Second run: time_starttransfer: 0.035244s
So it looks like at least some parts of the cold start taking much longer and aren't eliminated.