[flukus]

I think the line is drawn at how quickly you can transfer from localhost.

It seems like devs tend to ignore network latency entirely because it's something outside of our control. It seems to be getting worse too, things like the windows start menu can freeze when you're on a intermittent connection, SPA's can break entirely. I've spent a good chunk of my career fixing n+1 problems over a network, even when it's on a fast connection to a local database the latency becomes noticeable are fairly small values of n.

[ShabbosGoy]

I'm not a huge fan of SPAs. The trend of designing web applications as if they are mobile apps is quite silly.

Polymer in particular is notoriously slow when using polyfill.