I'd wager every site sitting behind CDNs or a varnish saw a developer go down to telnetting to port 80 to debug the cache behaviour. If you include frontend dev

I'd wager every site sitting behind CDNs or a varnish saw a developer go down to telnetting to port 80 to debug the cache behaviour. If you include frontend developers, sure your majority of developers assertion is true. Select sysops only, and you'll be e surprised.