电子歌曲推荐 荷兰S厂:每位电子爱好者的抖腿天堂？

Google app engine: Poor Performance with JDO + Datastore

I have a simple data model that includes USERS:store basic information (key, name, phone # etc) RELATIONS:describe, e.g. a friendship between two users (supplying a relationship_type + two user keys