Title: Reflections on a WebAssembly Winter

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December 9th, 2024. It feels like just yesterday I was pushing hard for more WebAssembly (Wasm) in our platform. Now it seems the hype has cooled down, and we’re seeing a bit of an overhaul. Let’s dive into what that means for us on the platform engineering side.

The Year of Wasm Overhaul

Remember how hyped up everyone got with Wasm last year? Every new project was being pitched with “Wasm will save us” as its slogan. But, oh boy, reality hit fast. Turns out, running complex applications in a sandbox can be tricky when you want to run them on bare metal servers.

A Debugging Day

Last week, I had a particularly rough debugging session. We were trying to offload some of our compute-heavy tasks from the main server to Wasm modules. The goal was straightforward: reduce latency and distribute load better. But it didn’t go as planned.

One module we wrote was throwing segmentation faults during runtime. I spent hours going through the stack traces, looking for any subtle memory management issues that could be causing the problem. After a few cups of coffee and some frustrated head-scratching, I finally found the culprit—a small but critical change in how Wasm handles non-thread-safe global variables.

It’s funny how such a small detail can make or break your application. We eventually fixed it by ensuring proper thread safety within our module. The lesson here is that while Wasm offers incredible flexibility and performance, you still need to treat each piece of the puzzle with care.

Platform Engineering Mainstream

Speaking of which, platform engineering has really taken off this year. It’s not just a buzzword anymore; it’s become a real discipline in its own right. We’ve seen more teams adopting DevOps practices, and the focus on developer experience (DX) is everywhere.

At our company, we’re now working closely with the DevOps team to ensure that every new service or module has an equally solid DX. This means not just writing clean code but also making sure it’s easy for other engineers to set up and maintain.

FinOps and Cloud Cost Pressure

Another big topic this year is FinOps—financial operations. With cloud costs skyrocketing, everyone is keeping a closer eye on spending. Our team has been working hard to implement better cost management practices. One of the tools we’re using is AWS Budgets combined with custom CloudWatch metrics.

We’ve set up alerts for services that are overutilizing resources and have started tracking spend more closely at a per-team level. It’s not glamorous, but it’s necessary to keep our cloud bills under control.

Learning from Open Source

One of the perks of being in platform engineering is getting to work with open-source projects. Recently, I spent some time digging into the new OpenAI O3 breakthrough on ARC-AGI-PUB (Advanced Reasoning Cognitive Interface - Generalized Purpose). It’s fascinating how these models are pushing the boundaries of what we thought was possible.

However, it also made me realize that while AI is getting smarter every day, the infrastructure to support it still needs a lot of work. We’re seeing more requests for scalable and reliable systems that can handle these advanced models without breaking a sweat.

Wrapping Up

As I sit here reflecting on 2024, I’m reminded that the tech world moves fast but sometimes slowly in cycles. From the initial rush to embrace Wasm to the calm of finding its true place, it’s been an eventful year. The lessons learned will shape our approach going forward.

What about you? What challenges and successes did you face this year?

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That’s a wrap for my thoughts on 2024. Looking forward to what 2025 brings!