README.md in active_remote-2.4.0 vs README.md in active_remote-3.0.0.pre1
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# Active Remote
Active Remote provides [Active Record](https://github.com/rails/rails/tree/master/activerecord)-like object-relational mapping over RPC. Think of it as Active Record for your platform: within a service, use Active Record to persist objects and between services, use Active Remote.
Active Remote provides a base class that when subclassed, provides the functionality you need to setup your remote model. Because Active Remote provides model persistence between RPC services, it uses a GUID to retrieve records and establish associations. So Active Remote expects your RPC data format to provide a :guid field that can be used to identify your remote models.