Discussion on "Swapping Go for Rust: 10x Cheaper K8s Ingress"

Syed Ahmer Shah · 2026-05-19T17:19:30.580Z

Let me tell you a story that starts in 2013, peaks somewhere around 2019, and ends with me staring at a $4,200 AWS bill at 11pm on a Tuesday. The Revolution Nobody Saw Coming March 2013. PyCon. A Fr

Dropping the cluster requirement from multiple hefty nodes down to a single small instance is a masterclass in infrastructure cost optimization. It is refreshing to see an optimization post that focuses heavily on the actual engineering ROI—balancing 3 weeks of developer time against a dramatic drop in a recurring cloud bill makes the transition completely justified.

This highlights a great architectural pattern. Using Go for the orchestration control plane where development velocity matters, but swapping the high-frequency data plane over to Rust is the sweet spot for cloud infrastructure. The drop in memory footprint without garbage collection pauses perfectly illustrates why the data plane substrate is moving toward compile-time memory management.

Getting good experience by reading your blog😊

Glad to hear you found the breakdown useful. Stripping away the theoretical arguments and focusing on the actual infrastructure metrics was the goal. Thanks for taking the time to read through it.

How did the team find the learning curve going from Go to Rust?

Many people get caught up trying to build a massive application right away, completely overlooking the value of simple automation. Breaking a problem down line by line for a real-world use case forces you to actually think like a developer instead of just copying code. That is excellent advice for anyone trying to move forward.

Were there any specific Rust libraries (like Axum or Tokio) that made building the new ingress easier, or did you write a lot of the low-level networking from scratch?

Focusing on a small, annoying problem is the perfect way to break the cycle. You are exactly right about the confidence boost that comes from fixing an error completely on your own. I appreciate you sharing that insight.

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Swapping Go for Rust: 10x Cheaper K8s Ingress

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