Grab has long relied on Golang for most of its microservices. In this article, we look at how Grab migrated their counter service from Go to Rust, resulting in a 70% cost reduction.

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Grab successfully migrated their Counter Service from Go to Rust, achieving a 70% cost reduction through improved resource efficiency. While latency remained similar, the Rust version required only 4.5 CPU cores compared to Go's 20 cores for handling 1,000 requests per second. The migration involved careful library selection, rebuilding internal tools like configuration systems, and overcoming challenges with Rust's borrow checker and async concurrency model.

How Grab’s Migration from Go to Rust Cut Costs by 70%

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lol, they clearly don’t know how to write efficient Go code

Everybody keeps saying reduction cost after converting from GO to RUST.
Does this mean that Rust is a better language than Go when it comes to proceesing power and cost?

You should read the original post too.