HN user

kevdev

99 karma

github.com/kevrenac

Posts3
Comments28
View on HN

As someone with a similar background to the writer of this post (I did avionics work for NASA before moving into more “traditional” software engineering), this post does a great job at summing up my thoughts on why space-based data centers won’t work. The SEU issues were my first though followed by the thermal concerns, and both are addressed here fantastically.

On the SEU issue I’ll add in that even in LEO you can still get SEUs - the ISS is in LEO and gets SEUs on occasion. There’s also the South Atlantic Anomaly where spacecraft in LEO see a higher number of SEUs.

Thanks for sharing this. I had the pleasure to work with Don Eyles in a previous job, he is a brilliant man, didn’t realize he had written a book. I actually didn’t even realize who he was initially when I first met him until another co-worker told me of Eyles’ history.

Quindar Tones 3 years ago

Fun fact: when the Quindar tones were no longer needed, NASA initially removed them. However, it caused confusion in mission control since everyone was used to them, so NASA added them back.

Figure 2 is great, but I would agree the entire paper is needed if you are implementing raft. There are a few specifics in the paper that you need when implementing it.

P.S. love your blog :)

I love this site. When I was learning & implementing raft in my distributed systems course, this page was invaluable. Plus the paper itself is pretty easy to read.

Potentially dumb question: when astronomers see a new galaxy, how do they know it’s never been discovered before? Is there some database of known galaxies that they use? Presumably there’s something measurable that they’re using to identify galaxies as well.

Why would you recommend 1Password over Bitwarden for less technical folks? Asking because I am about to setup a family plan on Bitwarden for me and my less-technical wife. I already use Bitwarden and have for some time, so seeing if there may be a compelling reason for us to go with 1Password instead.

Current OMSCS student here (4 classes down, 6 to go). I'll second this comment, so far I've been impressed with the program. It's definitely rigorous, but I've already learned a lot.

I don’t think that’s an insane setup at all. Losing access to GitHub would be bad for a lot of folks on HN I suspect. My GitHub has 2FA with Yubikeys and I am planning to do something similar to yours with backing up to a personal Gitea instance… once I get around to it.