javascript vs golang performance

May 19, 2025 - Go is faster. As it’s memory management, as it’s native machine code. Go optimizes loops aggressively and executes them very efficiently with fewer runtime checks, while JavaScript has more runtime overhead — type coercion checks, hidden ...

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r/golang on Reddit: Javascript faster than Go?

December 17, 2023 -

I've read so many tweets on the X platform that web servers built on Bun are faster that Rust and Go. How true is that, they have their Benchmarks to support their claims and I just find it absurd because because the way I think Node/Bun works is that your Javascript are transpiled to C++/Zig in every execution, a thing I believe would give Rust or Go the edge because these languages are directly compiled etc.

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Without the benchmarks and the code in hand, it's impossible to say if Go, Rust, or JS would "win" for any particular task purely from a performance perspective. There are just too many variables. Too much "well but in js it's more efficient to do it this way" or "but did you set GOMAXPROCS correctly for the go benchmark?" type concessions to take into account. At the end of the day, if you're building a web service that makes network calls to dependencies as part of its execution it does not matter which of these languages you choose because the vast majority of processing time for a single request is spent waiting for network calls to complete. If the difference between languages comes down to less than 1ms per operation (which is an eternity in compute time) then the far more important question is what language does your team know and what language is your tooling built around? Cause that's the language you should be using.

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My immediate reaction is that someone compared the three languages all running on single process and thread only. Backend JS servers are designed to run efficiently on a single thread via async promises. Golang is designed to run efficiently on multiple cores/procs via its green thread scheduler. I'm not very familiar with Rust runtimes, but I also assume this benchmark you saw didn't use tokio or whatever other concurrency runtimes crates.io offers for single processor hardware constraints.

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Golang vs JavaScript (v8/node.js) map performance - Stack Overflow

Out of curiosity I wrote some trivial benchmarks comparing the performance of golang maps to JavaScript (v8/node.js) objects used as maps and am surprised at their relative performance. JavaScript More on stackoverflow.com

stackoverflow.com

Javascript faster than Go?

Without the benchmarks and the code in hand, it's impossible to say if Go, Rust, or JS would "win" for any particular task purely from a performance perspective. There are just too many variables. Too much "well but in js it's more efficient to do it this way" or "but did you set GOMAXPROCS correctly for the go benchmark?" type concessions to take into account. At the end of the day, if you're building a web service that makes network calls to dependencies as part of its execution it does not matter which of these languages you choose because the vast majority of processing time for a single request is spent waiting for network calls to complete. If the difference between languages comes down to less than 1ms per operation (which is an eternity in compute time) then the far more important question is what language does your team know and what language is your tooling built around? Cause that's the language you should be using. More on reddit.com

r/golang

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December 17, 2023

Why does the US market prefer Nodejs to Golang?

I'm not in the us market but your points seems valid. You also need to have in mind that Javascript is the most used language in web dev so it obiously bleeds over to the backend. I myself was using PHP, Java or even C# but i'm seriously considering switching to Nest.js to do everything for my company's backend. The performance of Node is enough for probably 99% of the apps we builds. For the 1% left Go is a perfect match! You can choose Node and the plethore of frameworks that exists and do the majority of your work pretty quick and switch to Go for more heavy duty parts. In a perfect world you could do everything entirely in Go, it's just not the most known language right now and the environnement is pretty bare bones because the standard library is so complete, most of the Gophers tell you to not use any framework. More on reddit.com

r/node

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July 16, 2023

Go vs Node

Golang is a pain in the ass to use json with More on reddit.com

r/node

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November 1, 2023

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