update memcached

fastapi_cache/backends/memcached.py

@@ -0,0 +1,22 @@
+from typing import Tuple
+
+from aiomcache import Client
+
+from fastapi_cache.backends import Backend
+
+
+class MemcachedBackend(Backend):
+    def __init__(self, mcache: Client):
+        self.mcache = mcache
+
+    async def get_with_ttl(self, key: str) -> Tuple[int, str]:
+        return 0, await self.mcache.get(key.encode())
+
+    async def get(self, key: str):
+        return await self.mcache.get(key, key.encode())
+
+    async def set(self, key: str, value: str, expire: int = None):
+        return await self.mcache.set(key.encode(), value.encode(), exptime=expire)
+
+    async def clear(self, namespace: str = None, key: str = None):
+        raise NotImplementedError