Since mongodb is schema-less most of the time you can do without data migrations. Sometimes tho you want to create some new entities, or migrate old data instead adding another IF statement to your ...

v1.7.1 修正了mongo连接权限可能引发的问题,现在可以配置每个连接是否是只能连database,默认为False.{"uri":xxxx,"only_db":True} v1.6.0 ...

Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...