Rate Limiting and Resource Consumption
Part five of the API Security series: why limits are a security control and not just an ops knob, how the four rate-limiting algorithms trade off, which dimensions to key on, and how to protect expensive queries and sensitive business flows from bulk abuse.
Rate limiting as a security control (OWASP API4/API6): the algorithms and their trade-offs, keying on authenticated identity not just IP, 429 + Retry-After, protecting expensive operations, and defending sensitive business flows from bulk abuse.