单向好友关系 双向好友关系。
so what kind of db should we choose?
SQL or NoSQL?
now we use NoSQL Cassandra to see how to store friendship table.
单向好友关系 双向好友关系。
so what kind of db should we choose?
SQL or NoSQL?
now we use NoSQL Cassandra to see how to store friendship table.
design pattern that is used to decouple a class from its dependencies. Rather than the dependant class instantiating it
客户的域控突然起不来了,在登录的过程中还报了一个系统错误,显示错误信息为:lsass.exe - System Error : Security Accounts Manager initialization failed because of the following error: Directory Service cannot start. Error Status: 0xc0
举报文章
请选择举报类型
补充说明
0/200
上传截图
格式支持JPEG/PNG/JPG,图片不超过1.9M