[lswainemoore]

Would be interested in hearing what heroku users are using for automated failover when heroku goes down.

Obviously can't live in the application code (b/c that's unreachable at that point), but is there an easy way to configure Cloudflare or something to switch to a static site hosted somewhere else?

[samcheng]

Cloudflare itself will host a cached version (plus a little Cloudflare-injected banner at the top) in this situation, but not apparently not all of the time reliably. It has worked for us in other "520" error situations.