Two weeks ago I posted a picture of a free tier application serving close to 52,000 requests in 1 day. Soon after that, the same application exceeded that by processing over 53,000 requests within a single day. Here’s a few pictures demonstrating the capabilities of GAE’s free tier:
First off, here’s a picture of the Current Load screen:
A graph of milliseconds/request over the same time period:
The instances used:
And finally requests/second:
App Engine’s free tier is generally enough to host applications during development, testing, and low-level production traffic. With that said, it’s always a good idea to activate billing if you believe that your application will be receiving more than small amounts of traffic.