> For almost everything a managed runtime like Go or Java or .NET is going to be just as effectively deployed, significantly cheaper to develop
That might be true. I personally still prefer to use a language with sum-types and exhaustive pattern matching for encoding business logic.
> and much cheaper to maintain.
[citation needed]
> Where are the rustacean routing engines and database backends and codecs and kernels? Not in deployment anywhere, not yet.
It is used at Amazon on Firecracker, S3, EC2, CloudFront, Route 53, and that's just what was publicly talked about in 2020[0].
It is used in Android, including in the Kernel[1].
It is used at Microsoft, including in the Kernel[2].
It is used extensively in Firefox, and less extensively in Chrome. JPEG XL might be reincorporated into them because there's a Rust codec in the works.
For databases, the earliest I remember is TiKV[3], which hit 1.0 back in 2018. There are others since.
> C still rules that world, even for new features.
That might be true. I personally still prefer to use a language with sum-types and exhaustive pattern matching for encoding business logic.
> and much cheaper to maintain.
[citation needed]
> Where are the rustacean routing engines and database backends and codecs and kernels? Not in deployment anywhere, not yet.
It is used at Amazon on Firecracker, S3, EC2, CloudFront, Route 53, and that's just what was publicly talked about in 2020[0].
It is used in Android, including in the Kernel[1].
It is used at Microsoft, including in the Kernel[2].
It is used extensively in Firefox, and less extensively in Chrome. JPEG XL might be reincorporated into them because there's a Rust codec in the works.
For databases, the earliest I remember is TiKV[3], which hit 1.0 back in 2018. There are others since.
> C still rules that world, even for new features.
Sure. So?
[0]: https://aws.amazon.com/blogs/opensource/why-aws-loves-rust-a...
[1]: https://security.googleblog.com/2025/11/rust-in-android-move...
[2]: https://www.thurrott.com/windows/282471/microsoft-is-rewriti...
[3]: https://github.com/tikv/tikv