> I was wondering if the scenario of a server based app that lives in a hosted environment, where a single IP can be shared by many web sites. > > As I understand the rate-limit as it stands, every site on the shared host IP, regardless of api key, will be sharing the same rate-limit of 10,000 per site per day. more @ [**rate-limit per endpoint per IP VS. server apps in hosted environments**][1] Looks like everyone in GAE either - <strike>gets unlimited rate-limit </strike> - rate-limit engine checks for key + ip + top level domain (or some variation) of the referrer as described in linked post - **GAE is no longer a viable platform for API apps** NOTE: this issue is not limited to the current fire - anyone on a shared platform, e.g. standard shared webhosting, is vulnerable to this issue. [1]: https://stackapps.com/questions/1135/rate-limit-per-endpoint-per-ip-vs-server-apps-in-hosted-environments