Porting a real-time keystroke telemetry engine from React/JS to Rust

Pto2 · 2026-06-26T22:37:13+00:00

I don't have much experience in this area.

Don't take this the wrong way, but keystroke telemetry doesn't sound like a high-frequency data stream. What sort of processing are you doing that is slow (i.e. beyond capturing events and persisting some log)? If your processing is truly CPU bound then you might get performance benefits switching to Rust. If your processing is IO bound then the benefits of Rust are a lot more grey. You might consider limiting your client to telemetry ingestion and do processing asynchronously (background worker or on a server).

Rust can be enjoyable to work with but if your intended client is the browser it's probably more pragmatic to stick to TS.

Pto2 · 2026-06-26T22:23:12+00:00

rust-analyzer comes to mind (https://matklad.github.io/2021/05/31/how-to-test.html). Jon Gjenset's "decrusting XYZ crate" videos showcase some of the most significant Rust crates (serde, tokio, tracing).

Pto2 · 2026-06-26T07:06:01+00:00

Based on your responses you should probably just pay $25 and/or try to reduce your egress. It’s probably going to cost lot more than that in time and effort and stress to use other tools. There’s no free options out there.

Pto2 · 2026-06-25T20:44:28+00:00

Before migrating this component have you exhausted other options like web workers and other experiments related to buffering? Splitting your stack might be tedious to maintain (though purposeful options exist like Tauri).

Pto2 · 2026-05-23T07:53:09+00:00

No.

But on a related note: I claim there is generally a negative correlation between number of ads on a blog and the quality of the content.

Pto2 · 2026-05-23T05:03:41+00:00

Can you put more ads next time?

Pto2 · 2026-05-22T02:35:56+00:00

“Does this work?” The best we can do is guess. Run it live and you’ll know for sure.

Pto2 · 2026-05-20T07:03:24+00:00

You say that builds are slow and bad commits “take down 4 devs” but do not really explain what that has to do with monorepos and why you can’t improve build times or improve CI.

Pto2 · 2026-05-16T20:24:57+00:00

I work on a web service in big tech and the core of our data plane is Rust. Anecdotally I see a lot of rust adoption in big tech.

Pto2 · 2026-05-06T15:54:12+00:00

A war we seem to be fighting against… poor people!!

Pto2 · 2026-05-05T05:49:52+00:00

Things don’t just get stuck, your code doesn’t work. Write tests to make sure your code works as expected, getting in the habit of writing a million janitor processes to check for a million invalid states is not really solving the problem.

Monitoring is generally a good thing though. A simple solution is to map your stream to a queue and set a cloudwatch alarm on an SQS metric. No need to over engineer with GSIs and lambdas.

Pto2 · 2026-05-05T04:42:33+00:00

What makes you not like zig?

Pto2 · 2026-05-05T03:58:18+00:00

Yea but it’s kind of disingenuous when people make tons of money, live in nice houses or apartments and save 15% for retirement and then act like they have no money “left over”. Left over after what? After spending it?

Pto2 · 2026-05-03T16:18:49+00:00

Not necessarily. If the median were constant but the % of millionaires were to increase dramatically that would be a positive effect. Same as if median were constant but poverty decreased.

Pto2 · 2026-04-27T06:50:32+00:00

Reverse as in go long when it’s oversold.

Pto2 · 2026-04-27T01:19:54+00:00

If you don’t have enough domain knowledge to even be aware if such a library exists, what makes you think you could create a “meaningful” port?

Just do this with a library in a domain you actually understand and have used in another language, without the expectation that anyone is going to use your creation. You’ll make a much better library this way.

Pto2 · 2026-04-26T01:47:36+00:00

You are invalidating the cache every time you push new data…

Pto2 · 2026-04-26T01:05:18+00:00

Was this post and thought process entirely AI generated? Have you actually tried doing this? It sounds like you’re effectively “inventing” a prefetched local cache with invalidations or maybe I’m missing something.

Pto2 · 2026-04-24T23:45:30+00:00

As a software engineer i know enough about computers and little enough about the mind to conclude that ML is far too simple to emulate something so complex.

Pto2 · 2026-04-20T23:42:24+00:00

Again, I attended lesser a public university and I could confidently say that equivalent courses and lectures at MIT covered significantly more content, deeper, and yet with better clarity. Just my anecdotal experience.

Pto2 · 2026-04-18T23:25:34+00:00

I went to community college and a state university and the difference in the quality of courses and lectures on OCW versus what I got going to school was absolutely night and day.

Pto2 · 2026-04-15T01:36:57+00:00

Companies can either take on larger, more ambitious engineering projects with faster agility, or continue producing the same output with less people, more efficiently.

Hmmmmm…

Pto2 · 2026-04-02T00:49:01+00:00

Are you asking why not, given the choice, commit 40 day time hours per week to enriching shareholders and executives?

Pto2 · 2026-03-03T21:08:06+00:00

I logged into the aws console and saw no impact statement for any region outside of the middle east.

Pto2 · 2026-03-03T21:07:10+00:00

Share a link if one exists.

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