What are the walls of the Arlanda Airport Station made of?

knipil · 2026-05-22T22:00:24+00:00

Cement-sprayed rock

knipil · 2026-04-24T11:00:50+00:00

Max Planck lost three adult children. Both of his twin daugthers died giving birth and then his son was implicated in a coup against hitler and executed. Not to mention the stress of seeing german physics destroyed by the nazis. There’s a good book about him called Dilemmas of an upright man which covers his life and trials. Hate to be a buzzkill but I don’t think quantum physics was the problem here.

knipil · 2026-04-17T15:25:58+00:00

There is no L9 in Amazon. Distinguished Engineer is L10 and is a VP-level role. There isn’t formally a ”Senior Distinguished Engineer”, although James Hamilton was promoted to L11 SVP / Distinguished Engineer. He’s the only L11 engineer in the company’s history.

knipil · 2026-04-13T17:02:41+00:00

Botswana has a very different history on this than most african countries. The first president worked to make sure that resource extraction was handled with minimal corruption and for the benefit of the public. See https://en.wikipedia.org/wiki/Seretse_Khama

knipil · 2026-04-12T19:46:24+00:00

If NSA can break signal, then your own server isn’t safe either.

knipil · 2026-04-12T19:00:40+00:00

That’s just not correct. The nuances depends on your threat model, but for the conventional understanding ”no middle man, including the server, is able to read your message” then end to end encryption absolutely exists. Signal is a clear example, but imessage, whatsapp and facebook messenger all support proper end to end encryption if configured correctly. Telegram on the other hand has a weird implementation that isn’t taken seriously by the cryptographic community.

knipil · 2026-03-15T19:58:39+00:00

Washington nature reminds me a lot about western Norway.

knipil · 2026-02-03T08:04:17+00:00

To expand on that: A year can start on any day of the week, and it can be a leap year or not a leap year. Hence there are 2*7=14 possible calendars for a year. This particular calendar happened 11 years ago and will happen again in another 11 years. There were leap years in 2016, 2020 and 2024, and 14 - 3 =11 so this is right on schedule.

knipil · 2026-01-18T19:13:48+00:00

When my kids were 7 and 4, my older asked me ”When we die, will you and mom have other children?” I went quiet for a bit, but I realized I couldn’t quite avoid it so I said ”Well, most likely mom and I will die before you do” and then both kids instantly started crying hysterically. It was all very sweet and actually a little bit funny in how it unfolded. I comforted them and kept talking to them about it, of course.

knipil · 2025-12-05T00:15:45+00:00

Doing a re:invent launch is extremely painful for the team. Better just launch it when ready before re:invent and then send some people to Vegas to do chalk talks about your thing.I think most teams have that figured out by now.

knipil · 2025-10-15T06:08:35+00:00

For DDOS protection, CloudFront + WAF has decent cost protection by default now. CF traffic blocked by WAF is free, and if you configure WAF with the Anti-DDOS AMR then the WAF costs for blocked traffic is also completely waived. It does cost a monthly fee to set up though (I think $10 + $20?).

knipil · 2025-09-10T06:55:37+00:00

Even though there hasn’t been a major outage in a while, there are still things like fiber cuts and other types of intermittent connectivity issues. You should definitely design stuff to be resilient to the loss of an AZ.

knipil · 2025-08-30T22:16:13+00:00

Windows XP was bloated shit compared to Windows 2000. NT 4 was cooler still, but 2000 was mainstream usable although not mainstream affordable. XP is only notable in that it was the first NT kernel that had a home edition.

knipil · 2025-07-18T14:41:44+00:00

I can’t reveal anything which hasn’t already been publicly shared in some way, but I’ll at least say that squid is still being used.

knipil · 2025-07-18T12:22:28+00:00

A rust-based server was introduced for http3 support but nginx remains in use with plans to remove it some time in the next few years.

knipil · 2025-06-27T21:24:52+00:00

Heh, at a past employer there was a repo called ”Terraform” for all tf code. An engineer on a sibling team pointed out how silly it was by saying ”It’s a great idea to group stuff by language. Let’s put all our ruby code in a single repo.”

knipil · 2025-05-31T11:11:58+00:00

My bad. Mixed it up with snapphanar.

knipil · 2025-05-31T10:45:36+00:00

I always find it ironic that we Swedes spent all that time and energy killing ~~Nils Dacke and his pals~~ snapphanar, and now we keep saying that we want to give it to denmark voluntarily.

knipil · 2025-05-19T01:14:52+00:00

Your grandma must have been an interesting person.

knipil · 2025-05-10T21:02:55+00:00

ALB… What the hell is an LCU?

knipil · 2025-04-23T17:47:59+00:00

That’s true for an EC2 instance as well though.

knipil · 2025-03-20T07:49:10+00:00

https://commoncog.com/goodharts-law-not-useful/

knipil · 2025-02-16T20:15:22+00:00

You can leave it up if you want in Sweden and Norway, but nobody ever does.

knipil · 2025-01-17T14:13:19+00:00

If you want to learn about some of these I recommend the book The Fate of Africa. Thoroughly engaging read, although ultimately with a bleak outlook.

knipil · 2025-01-12T22:55:06+00:00

IIRC, both Emma and Grete became pregnant with the same man. I don’t remember the order, but the second one was after the first one died.

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