Rate Limiting

Rate limiting is a control applied by API providers to restrict how many requests a client can make within a given time window - typically expressed as requests per second, per minute, or per month.

When a client exceeds its limit, the API returns a 429 Too Many Requests HTTP status code. The response often includes a Retry-After header indicating when the client can try again.

When building applications that call APIs frequently - such as price trackers or market monitors - design your code to respect rate limits, implement exponential backoff on 429 errors, and cache responses to reduce redundant requests.