Hacker News: jdalsgaard

New comment by jdalsgaard in "Don't be a meat proxy"

jdalsgaard — Mon, 03 Aug 2026 08:21:28 +0000

When using AI to generate content, content of any kind - then I urge the author to evaluate the true cost for the organisation, not just for him or her. Using AI to generate 20 pages of documentation in 30 minutes looks good for you - but having 100s of people read through that slop will cost the organisation, not only in plain work hours, but also in lost trust, respect, joy of work as well a sense of purpose.

And yes, I've gotten '50 pages tech spec' docs sent my way from upper management -- as a 'help'....

New comment by jdalsgaard in "White-collar AI apocalypse narrative is just another bullshit"

jdalsgaard — Mon, 23 Mar 2026 09:36:43 +0000

> Because the remaining 10% is what required most of the CS team’s time. They built an FAQ you can talk to.

These days it's hard to get people to read an email longer then 5 lines - yet people are super excited about abundant masses of text generated by LLMs. It does not compute....

New comment by jdalsgaard in "Swift is a more convenient Rust (2023)"

jdalsgaard — Sun, 01 Feb 2026 09:57:04 +0000

Yes, it supports it. But is fundamentally not based on the idea of zero-cost abstraction from where I see a lot of Rust features being derived from. So crates I pull in must obey it too - it's not optional (you do have unsafe to watch out for, but that's an easy grep).

New comment by jdalsgaard in "Swift is a more convenient Rust (2023)"

jdalsgaard — Sat, 31 Jan 2026 23:46:56 +0000

I would tend to disagree; fundamental to Rust is the concept of zero-cost abstraction. Swift does not do that.

I my view, and I might be wrong, many features of Rust are chosen specifically to have the language comply to the zero-cost rule. Such as the ownership model.

New comment by jdalsgaard in "Why Does Destroying Resources via TF Suck?"

jdalsgaard — Sat, 24 Jan 2026 21:08:02 +0000

Most tools, frameworks and articles in IT, SaaS in particular, are about spinning up things. It is what people find exciting.

Work a few years in Ops and you learn that spinning up things is not a big part of your work. It's maintenance, such as deleting stuff.

Unfortunately this process is the hardest, and there's very little to help you do it right. Many tools, framework and vendors don't even have proper support for it.

Some even recommend 'rinse and repeat' instead of adjusting what you have - and this method is not great if you value uptime, nor if you have state that you want to preserve, such as customer data :-)

Deleting stuff, shutting services down, turning off servers - those are hard tasks in IT.

New comment by jdalsgaard in "JMAP for Calendars, Contacts and Files Now in Stalwart"

jdalsgaard — Wed, 22 Oct 2025 19:59:40 +0000

I second that; only running it for personal use on a few domains, but handles all the complexity _extremely_ easily.

New comment by jdalsgaard in "Ask HN: What are good books/blogs to read for a first time CTO?"

jdalsgaard — Fri, 29 Dec 2023 13:05:44 +0000

Not a book or blog per se, but: https://datatracker.ietf.org/doc/html/rfc1925 -- The Twelve Networking Truths.

New comment by jdalsgaard in "Eurovision Song Contest Bingo"

jdalsgaard — Sat, 14 May 2022 19:56:39 +0000

In desperate need of more upvotes..

New comment by jdalsgaard in "Can I have a smaller Prometheus"

jdalsgaard — Fri, 28 Jan 2022 22:29:33 +0000

> Prometheus alternative

Well... if size of the executable is really a concern, perhaps Victoria Metrics is worth considering; my amd64 executable is about 17MiB in size.

New comment by jdalsgaard in "Remote, in-memory key-value stores: An idea whose time has come and gone? [pdf]"

jdalsgaard — Sat, 04 May 2019 10:32:19 +0000

Love it; "if you fetch it over a socket, it ain't no cache"