import time class FixedWindowCounter: def __init__(self, window_size, max_requests): self.window_size = window_size # Size of the window in seconds self.max_requests = max_requests # Maximum number of requests per window self.current_window = time.time() // window_size self.request_count = 0 def allow_request(self): current_time = time.time() window = current_time // self.window_size # If we've moved to a new window, reset the counter if window != self.current_window: self.current_window = window self.request_count = 0 # Check if we're still within the limit for this window if self.request_count < self.max_requests: self.request_count += 1 return True return False # Usage example limiter = FixedWindowCounter(window_size=60, max_requests=5) # 5 requests per minute for _ in range(10): print(limiter.allow_request()) # Will print True for the first 5 requests, then False time.sleep(0.1) # Wait a bit between requests time.sleep(60) # Wait for the window to reset print(limiter.allow_request()) # True