It is fun to watch the large scale tests that people are using RedLine for. Here is an example of a test with 10 m3.2xlarge servers each simulating 2000 users each hitting the applications 50 times from the AWS Ireland data center. So 1,000,000 hits on their application in a couple of minutes. Here is the graph of a successful test:
As you can see the load was about 10,000 hits per second and the response time of the app was always sub-second.
The cost was $10 for an hour of testing. This user actually ran the test 5 times in that hour – that is 5 million hits for $10.