Do I need to Setup a Reverse Proxy behind Google App Engine or not?

Question

I am running my app on Google App engine and I have linked my domain which I bought from GoDaddy to the app engine along with the SSL

Answer 1

After posting this question on Google groups they told me that There is no need for setting up reverse-proxy for both Flexible and As well as Standard Environment.

• App Engine instances in the Standard environment 1 do not have public static IP addresses, and are completely protected by the main Google Front-end server. Requests to your application first hit the Google Front-end, then the front-end performs the SSL security checks according to your uploaded certificate [2], and then forwards the request to your App Engine instances using their internal IPs. Therefore no reverse-proxy is required.

• If you are using the App Engine Flexible environment [3], you are able to have static IPs for your instances as they use Compute Engine VMs [4]. But, App Engine automatically loads Nginx proxy in front of every App Engine Flexible instance pre-configured, so you do not have to set this up at all. All you have to do is follow the guide to uploading your SSL cert [5], and requests will be vetted by the Google Front-end just like the Standard environment above. Therefore no added reverse-proxy is required.

Full answer can be found here issue