success

utils/cache_util.py

@@ -0,0 +1,19 @@
+from collections import OrderedDict
+
+class LRUCache:
+    def __init__(self, capacity: int):
+        self.cache = OrderedDict()
+        self.capacity = capacity
+
+    def get(self, key):
+        if key not in self.cache:
+            return None
+        self.cache.move_to_end(key)
+        return self.cache[key]
+
+    def put(self, key, value):
+        if key in self.cache:
+            self.cache.move_to_end(key)
+        elif len(self.cache) >= self.capacity:
+            self.cache.popitem(last=False)
+        self.cache[key] = value