[mslate]

I highly recommend surge.sh for easy static hosting--their cache-busting strategy is explained here:

https://surge.sh/help/using-lucid-caching-automatically

[sandGorgon]

we use cloudfront and nginx for most of our infrastructure - kinda hard to move to surge right now.

ETags is not viable for this kind of a setup - it pretty much means triggering a nginx reload which is what a cache-busting signature avoids.