Using actors in Dapr
The actor model in Dapr adopts the concept of virtual actors: a simplified approach to a complex combination of design challenges. Virtual actors originate from the Microsoft "Orleans" project – a project that inspired the design of Dapr. If you want to deepen your knowledge of its history, the respective research paper can be found at https://www.microsoft.com/en-us/research/project/orleans-virtual-actors/.
In the virtual actor pattern, the state and behavior of a service are tightly intertwined, and the actor's lifetime becomes orchestrated by an external service, or runtime. The developers are lifted from the responsibility of governing concurrent access to the resource (the virtual actor) and to its underlying state.
These concepts will become clearer when we analyze how the virtual actor pattern is implemented in Dapr in the next section.
Introduction to the actor pattern
In Dapr, the interaction between a client and a service...
