RUST Essentials Advanced

Actor Framework in Rust

Design and implement your own trait-based, fully composable actor framework in Rust, built step by step from first principles.

Premium · 12h 46m · 6 ch

Practice →

What you'll build

We will design and write a full-fledged actor framework in Rust from scratch—without third-party actor libraries, using only asynchronous Rust primitives. Starting with the basic Actor trait, we will build a runtime, mailbox, context, address system, and event, interruption, and request–response patterns step by step.

Along the way, we will explore key concurrency techniques: message passing through channels, trait-based polymorphism with async_trait, type-erased envelopes, lifecycle management through watch channels, and the Future trait for custom awaitable types. By the end, our framework supports events without responses, graceful interruption, and strictly typed request–response interaction, while the Calculator example confirms that everything works.

Learning objectives

✓Understand the actor model and its implementation in Rust

✓Build an asynchronous runtime with message passing on Tokio

✓Design type-erased message envelopes for heterogeneous mailboxes

✓Implement actor lifecycle management with status tracking

✓Create an event system with typed handlers

✓Build a graceful interruption mechanism

✓Turn a single crate into a Cargo workspace

✓Implement a request–response pattern using oneshot channels

✓Write a custom Future type for awaitable responses

Prerequisites

▸Rust fundamentals (traits, generics, ownership)

▸Basic asynchronous Rust (async/await, Tokio)

▸Familiarity with channels and message passing

Course curriculum

1 Basic Actor Types

—Actor Model and Project Structure

—Actor Trait

2 Actor Runtime

—Actor in a Separate Task

—Message Handling

—Testing an Actor

3 Actor Lifecycle

—Waiting for Actor Completion

—Actor Running Status

—Receiving Messages from the Channel

—Message Processing Loop

—Actor Lifetime

—Sending Messages to an Actor

—Interrupting an Actor

4 Events in Actors

—Extension for Event Processing

—Event handling test

—Fallback error handling

—Actor's own address

—Workspace-level dependencies

5 Interaction with actors

—Interaction trait

—Requests as actor messages

—Sending the response

—Actor address extension

—Interaction test

6 Receiving responses

—Waiting for the response to a request

—Responses as separate messages

Technologies

Rust Actor model Asynchronous traits Tokio Message passing Concurrency Trait object Type erasure Oneshot channel Future Cargo workspace

FAQ

Is this a video course?

No. You work through the project step by step in your browser, and the reference code for each step saves to your disk — yours to run and keep locally.

Do I need to install anything?

No. The playground runs entirely in your browser — no toolchain or local setup required.

Can I try it before subscribing?

Yes. Preview steps are available without a subscription so you can see the format and quality first.

What do I get with full access?

Every step unlocked, the Workbench app, a snapshot for each step, jump-to-any-step navigation, and all new playground releases.

Does it work with an AI agent like Claude or Codex?

Yes. You can work through a playground solo or alongside an AI agent.

Is there reference code?

Yes. Every step has a complete reference solution you can compare against.