collections:
post 用户发布的文章表
follow 关注关系
user 用户
怎么设计列出关注的人发布的文章,听说 in是不支持索引。
伊谢尔伦2017-04-28 09:08:17
First find all the people you are following, and then check their articles. MongoDb does not support cross-table joint queries, so programs need to be implemented.
