imho, a get() from cache when you already have the value seems like an unnecessary waste of cycles and network traffic. plus this arrangement would seem vulner

imho, a get() from cache when you already have the value seems like an unnecessary waste of cycles and network traffic. plus this arrangement would seem vulnerable to a pathological case where you found the V from the db, but have a full/failed/partitioned cache and end up faulting or otherwise not returning the V.