The Advantages of Rust Backend over TypeScript

Rust’s popularity has practically exploded over the last few years. If you’ve spent any time building backend systems where every millisecond counts, you probably already know why. Node.js is great, but Rust is on a completely different level when it comes to raw performance.

Today, let’s take a look at Actix Web (a powerhouse Rust framework) and see how it compares to Express.js. We all love Express for its simplicity and massive ecosystem, but Actix Web brings multi-threading and blazing-fast execution to the table.

Why Actix Web Pulls Ahead of Express

1. Raw Performance and Efficiency

Let’s not sugarcoat it: Rust absolutely crushes Node.js in raw performance metrics. Benchmarks consistently show Actix Web handling way more requests per second, with drastically lower latency. Under heavy load, you might see Actix responding up to 6 times faster than Node.js. Why?

• Compiled vs. Interpreted: Rust compiles directly down to native machine code. There’s no V8 engine sitting in the middle interpreting things on the fly. You get much faster execution and better CPU usage right out of the box.
• Memory Footprint: Rust doesn’t use a garbage collector. Node.js does, which means you occasionally get those annoying latency spikes when V8 decides to clean up memory. To give you an idea, in a test with a million requests, a basic Actix service hovered around 26MB of RAM. A similar Node.js service ballooned past 100MB.
• Concurrency: Node.js runs on a single thread and uses the event loop for async operations. If you want multi-core processing, you have to spin up clusters (which duplicates memory). Actix Web uses an actor model and handles multi-threading by default. It just scales better across CPU cores without the heavy context switching.

2. No Garbage Collection, No Problems

Rust’s borrow checker is famous (or infamous, depending on who you ask) for enforcing memory safety at compile time. It completely eliminates whole categories of bugs—null pointer dereferences, data races, buffer overflows—without needing a garbage collector running in the background. If you’re building financial tools or healthcare systems where crashes aren’t an option, this is a massive win.

3. Type Safety That Actually Saves Time

TypeScript is great, but it’s ultimately just a layer on top of JavaScript. Rust’s type system is baked into the compiler. It’s notoriously strict, which means you spend more time fixing compiler errors during development, but way less time chasing weird runtime bugs in production. Actix Web leans heavily into this, ensuring everything from your request payloads to your response headers is strictly typed.

4. Cheaper Server Bills

Because Actix Web uses significantly less CPU and memory, you can run your backend on much smaller, cheaper servers. Some developers have reported cutting their cloud hosting bills by 75% or more just by migrating a heavy Express service to an unoptimized Actix setup.

“Your ability to discipline yourself to set clear goals and then work toward them every day will do more to guarantee your success than any other single factor.”

The Catch (Because There Always Is One)

It’s not all sunshine and lightning-fast responses. There are definitely trade-offs:

1. The Learning Curve: Rust is hard. If you’re coming from JavaScript, wrapping your head around ownership and lifetimes will feel like hitting a brick wall for the first couple of weeks. TypeScript is just much easier to pick up.
2. The Ecosystem: npm is huge. If you need a library to do something highly specific in Node.js, somebody probably wrote one three years ago. Rust’s ecosystem (crates.io) is growing fast, but it’s still not as mature as Node’s.
3. Time to Market: If you just need to hack together a quick MVP and performance doesn’t matter yet, you’ll probably build it faster in Express.

The Verdict

If you’re building a high-performance, CPU-heavy application where latency and memory usage actually matter, Rust and Actix Web are absolutely worth the learning curve.

But if you just need to get a standard web app out the door quickly and want to lean on a massive ecosystem, TypeScript and Express are still a fantastic choice. Ultimately, Rust is moving from a niche “systems language” to a top-tier backend contender, and the performance benefits are getting harder to ignore.