Fixed Window vs. Sliding Window Rate Limiting in .NET

Fixed window rate limiting resets request counters at strict time intervals, allowing potential burst traffic at the start of each window but offering simple implementation. Sliding window rate limiting uses rolling time periods to calculate request limits, providing smoother traffic distribution and preventing bursts but requiring more computational resources. Fixed window works well for simple internal APIs, while sliding window is better suited for high-traffic public APIs where smooth request flow is critical.