Closes #219

src/libbot/cache/classes/cache_memcached.py

@@ -69,28 +69,28 @@ class CacheMemcached(Cache):
     def get_object(self, key: str) -> Any | None:
         raise NotImplementedError()
 
-    def set_json(self, key: str, value: Any) -> None:
+    def set_json(self, key: str, value: Any, ttl_seconds: Optional[int] = None) -> None:
         key = self._get_prefixed_key(key)
 
         try:
-            self.client.set(key, _json_to_string(value))
+            self.client.set(key, _json_to_string(value), expire=0 if ttl_seconds is None else ttl_seconds)
             logger.debug("Set json cache key '%s'", key)
         except Exception as exc:
             logger.error("Could not set json cache key '%s' due to: %s", key, exc)
             return None
 
-    def set_string(self, key: str, value: str) -> None:
+    def set_string(self, key: str, value: str, ttl_seconds: Optional[int] = None) -> None:
         key = self._get_prefixed_key(key)
 
         try:
-            self.client.set(key, value)
+            self.client.set(key, value, expire=0 if ttl_seconds is None else ttl_seconds)
             logger.debug("Set string cache key '%s'", key)
         except Exception as exc:
             logger.error("Could not set string cache key '%s' due to: %s", key, exc)
             return None
 
     # TODO Implement binary serialization
-    def set_object(self, key: str, value: Any) -> None:
+    def set_object(self, key: str, value: Any, ttl_seconds: Optional[int] = None) -> None:
         raise NotImplementedError()
 
     def delete(self, key: str) -> None: