One cool trick for serving mixed http/https that I somehow went 10 years without finding out: you can just point your Rails asset_host to "//d3vam04na8c92l.clou

One cool trick for serving mixed http/https that I somehow went 10 years without finding out: you can just point your Rails asset_host to "//d3vam04na8c92l.cloudfront.net". Browsers understand this to mean "Look up this address via whatever protocol I am currently on, http if http, https if over SSL." This is a huge cache boost in Rails because you don't have to cache your pages twice (once for HTTP once for HTTPs.)