Andrew Hornstra
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andrewhornstra.com
Andrew Hornstra
@andrewhornstra.com
58 followers 71 following 14 posts
I do a lot of Django, Postgres, and Kotlin. Looked at data once and have been recovering ever since.
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andrewhornstra.com
Took some photos of the eclipse last night. It was unfortunately cloudy half way through until well after totality.

90mm Meade refractor in high light pollution, iPhone 16
Image of the moon through a telescope. The shadow of the earth covers about 15% of its surface, starting at the bottom right. Image of the moon through a telescope. The shadow of the earth covers about 25-30% of its surface, starting at the bottom right. Closer-up image of the moon through a telescope. Only the left half is visible. The edge of the shadow is the focus of the image. The shadow of the earth covers about 35% of its surface, starting at the bottom right. Image of the moon through a telescope. There is heavy cloud coverage, and the moon is not very visible. Few details are discernible.The shadow of the earth covers about 90% of its surface, starting at the bottom right.
March 14, 2025 at 7:28 PM
andrewhornstra.com
Harout and I were interviewed a few weeks back on Django Chat to talk about some of the technical aspects of pinplanet and that episode came out yesterday! If that's something you're interested in, you can listen here:
open.spotify.com/episode/3tOd...
February 22, 2024 at 10:13 PM
andrewhornstra.com
I normally don't post about stuff I work on, but I'm really excited about launching the Android App for pinplanet, a travel scrapbooking app! Development started back in October and we just released it. Give it a try!
t.co/8GjEOfW4d9

If you’re on iPhone, you can download it here
t.co/pzW5QiWLsZ
pin map - pinplanet - Apps on Google Play
travel tracking
t.co
February 15, 2024 at 1:08 AM
andrewhornstra.com
I had seen a few things on the postgres MVCC before, but this article has one of the clearest explanations I’ve seen yet. I recommend it if you’re unfamiliar with the MVCC.
https://devcenter.heroku.com/articles/postgresql-concurrency
PostgreSQL Concurrency with MVCC | Heroku Dev Center
Understand how Multi Version Concurrency Control is implemented in Postgres and how it affects the design of highly concurrent applications.
devcenter.heroku.com
May 31, 2023 at 12:16 AM