When to rate-limit your endpoint?

Rate limiting is used in the API mainly for,

Protecting resources:
Prevent server overload by limiting the number of requests a user can make in a given time frame.

Maintaining stability of the API:
Ensure consistent API performance, even during traffic spikes or attacks.

Controlling costs:
Manage expenses related to data transfer and usage-based pricing.

Ensuring security:
Defend against malicious activities like brute-force attacks or credential stuffing.

Providing fair access for users:
Guarantee equal access to API resources for all users or applications.

You can read more about other API best practices in my visual eBook 🚀.