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

It’s always fascinating to see Rust’s memory efficiency and predictable performance (no GC pauses) yield such massive infrastructure savings when replacing Go in high-throughput network applications. The transition from Go to Rust for an ingress controller makes a ton of sense given how critical low latency and minimal resource footprints are at that layer.

That is a great way to put it. Focusing on a tiny, specific problem instead of a massive project makes a huge difference. There is something completely different about fixing a personal inconvenience because a generic tutorial cannot help you step-by-step. Surviving that first unguided error message really is the turning point. Thank you for sharing this perspective.

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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Swapping Go for Rust: 10x Cheaper K8s Ingress

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