docs: def remember(self, key, minutes, callback):
          """
          Get an item from the cache, or store the default value.
  
          :param key: The cache key
          :type key: str
  
          :param minutes: The lifetime in minutes of the cached value
          :type minutes: int or datetime
  
          :param callback: The default function
          :type callback: mixed
  
          :rtype: mixed
          """
          # If the item exists in the cache we will just return this immediately
          # otherwise we will execute the given callback and cache the result
          # of that execution for the given number of minutes in storage.
          val = self.get(key)
          if val is not None:
              return val
  
          val = value(callback)
  
          self.put(key, val, minutes)
  
          return val