Using Python for an API call that is basically a thin wrapper around one of our supplier's (not very good) APIs running ~500k requests per day. We've had problems twice with 500 errors for all requests at night when they do maintenance on the API gateway/lambda hardware and don't tell us (in both cases they announced new features the next morning). We reported it to support both times and got "we're sorry, but since it's all good now there is nothing to do" as the response both times. Left a bad taste in our mouth and so we haven't deployed anything new to it and probably won't for a while despite it working well otherwise.
