Normally, we find valuable data our clients need, and create APIs. We rationalize our domains into understandable resources, with clear boundaries of ownership (especially in microservice environments). However, if our design doesn’t include considerations for how clients will use the APIs, we can get into a lot of trouble when it goes live. We’ll look at some API design patterns that can cause operational headaches, and how to watch out for them. Furthermore, we’ll cover some tricks to get out of trouble if we already have it implemented.