Google URL Shortener 403 Rate Limit Exceeded

Question

Using the google url shortener api, it was working fine till I started testing at load. Quickly started getting back 403 Rate Limit Exceeded errors from Google, even though

Answer 1

The API limits requests to 1 request / per second / per user.

A user is defined as a unique IP address.

So if you were doing your load testing from a single IP this would have cause your rate limit issue.

https://developers.google.com/analytics/devguides/reporting/mcf/v3/limits-quotas#general_api