Add rate limiting code

implementations/python/rate_limiting/sliding_window_log.py

@@ -0,0 +1,31 @@
+import time
+from collections import deque
+
+class SlidingWindowLog:
+    def __init__(self, window_size, max_requests):
+        self.window_size = window_size  # Size of the sliding window in seconds
+        self.max_requests = max_requests  # Maximum number of requests per window
+        self.request_log = deque()  # Log to keep track of request timestamps
+
+    def allow_request(self):
+        now = time.time()
+        
+        # Remove timestamps that are outside the current window
+        while self.request_log and now - self.request_log[0] >= self.window_size:
+            self.request_log.popleft()
+
+        # Check if we're still within the limit
+        if len(self.request_log) < self.max_requests:
+            self.request_log.append(now)
+            return True
+        return False
+
+# Usage example
+limiter = SlidingWindowLog(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 slide
+print(limiter.allow_request())  # True