Even easier would be to setup cloudflare in front of the site. All you have to do is set the cache control headers for your landing page to something like "max

Even easier would be to setup cloudflare in front of the site. All you have to do is set the cache control headers for your landing page to something like "max-age=300, public". That way cloudflare's servers will eat the vast majority of your requests, but no one will see content older than a few minutes. We got HN'd the other day and this kept our median response time around 25ms, even for our slow rails app. Of course you have to make sure your landing page is publicly cacheable for this to work (i.e. no user specific data), but that's a small price to pay for a drastic reduction in the amount of traffic you need to serve.