Question

Does it make sense to overwrite get_by_key_name with another function that uses memcache to save on database queries? Like below? In this example the memcache key consists of only the entity key_name just to make it simple…

class Entity(db.Model):
   @classmethod
   def get_by_key_name(cls, key_name):
     entity = memcache.get(key_name)
     if entity is not None:
       return entity
     else:
       entity = cls.__super__.get_by_key_name(key_name)
       memcache.add(key_name, entity, 3600)
       return entity

Answer 1

A better and neater solution would be to use NDB, which has built in support for memcache and instance memory caching.