Why is having a maximum limit on API calls important?

Having a maximum limit on API calls is important primarily to prevent system overload. When applications frequently interact with an API, especially in high-traffic scenarios, excessive calls can lead to overloading the server resources. This can compromise the performance and reliability of the system, leading to slower responses or even complete service outages. By implementing a limit, the system can manage its resources more effectively, ensuring that it remains stable and can handle requests efficiently without being overwhelmed.

This management is crucial for maintaining a good user experience, as it minimizes the risk of downtime and ensures that legitimate user requests are processed in a timely manner. Additionally, controlling the rate of API calls helps to protect the APIs from abuse and potential denial-of-service attacks, further contributing to the overall health of the system.