An Implementation of the Actor Model in NodeJs with NestJs
In the previous post, I explored what Actor Model is and why to use it, like scalability, concurrency, and fault tolerance. So, today I want to explore how you can implement the Actor Model in Node. js With NestJS Framework.
Getting Started with NestJS
In this post, I’ll discuss how to implement the Actor Model in a NestJS application step-by-step:
Step 1: Setting Up NestJS Project
In order to start building our application, we need to setup a Nest app.
Step 2: Prepare the Actor System
Writing the service to handle your actors. This service will take care of registrations and messaging between actors.
Step 3: Defining Base Actor Class
Create a Base Class for Actors This supervisor class will provide the structure and common behavior for all actors.
Step 4: Implementing Specific Actors
Now that we have base actor class, create concrete actor classes that inherit from base actor class. The usual message handling logic will be implemented by each actor.
Step 5: Involves bootstrapping the application
Finally, configure the main file to bootstrap NestJS application and register actors.
Conclusion
A Guide NestJS brings a lot of power in building your applications architecture, especially for concurrent and distributed systems wherever concurrency is a requirement, building and running a microservices already gives you an edge. Actors, due to their encapsulated design, help in easy management of more complex behaviors and state.
Example Code in Github: