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Mangara

@mangara42.bsky.social
140 followers 122 following 129 posts

Software developer and computer scientist.

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Andy Croll @andycroll.bsky.social · 02/10/2026
Wrote a thing about last week's Rails World. andycroll.com/ruby/look-a...
andycroll.com
Look at all the things he's not doing
David's keynote was sure where Rails is heading and quiet on how we get there. The rest of Rails World had better answers.
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Greg Clarke 🇨🇦 :mverified: @greg.clar.ke.ap.brid.gy · 23/09/2026
I'm working on a new pen testing service. It will use a bug bounty subscription where clients pay nothing when no new vulnerabilities are discovered. Now I'm looking for some guinea pigs! Please ping me if you want a free audit of an online resource you own.
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Zach Weinersmith @zachweinersmith.bsky.social · 11/09/2026
Very forceful statement by Terry Tao about AI and math. terrytao.wordpress.com/2026/09/11/a... Note, he is not claiming the models aren't real and powerful. He's talking about how that power should be used. This, I believe, is what all AI discussions should center.
terrytao.wordpress.com
A Severe Misalignment of AI in Mathematics
I am proud to be among the list of 25 initial signatories — all Fields Medallists — to the declaration below, which grew out of discussions between ourselves over the last week. We have…
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Aura/Moom @moomanibe.bsky.social · 11/09/2026
important industry terms to know about: B2B: buy to buy SaaS: service as a service MRR/MAU: your cat is hungry
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ℳatt @matttomic.bsky.social · 04/09/2026
I've seen everyone sharing that US Dialect Quiz so I decided to make my own, much crappier, CANADIAN DIALECT QUIZ to guess where in Canada you're from
A flow chart I have created with multiple questions and the answers determine where you're from.

Question 1 is do you call it a hydro bill (which then branches down to ON, QC, BC, MB) or an electric bill (which then branches down to SK, AB, NS, NB, PEI, NL)

Question 2 is do you call it a cabin (BC, MB, AB, SK) cottage (ON and atlantic) camp (northern Ontario) chalet (QC) or bungalow (Cape Breton)

To delineate BC from MB: do you call it dinner or supper

To delineate southern Ontario rural or big city: have you heard of a stag & doe

To delineate SK from AB: do you call a hoodie a bunnyhug

And finally to delineate NL from the other atlantic provinces: whaddayat? (Correct answer: dis is it b'y)
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Lorin Hochstein @norootcause.surfingcomplexity.com · 02/09/2026
Another day, another public incident write-up, another blog post with my thoughts on it. This time, it's @buildkite.bsky.social's excellent recent write-up: surfingcomplexity.blog/2026/09/01/t...
surfingcomplexity.blog
Thoughts on the Buildkite Aug 25 incident
The other day, I wrote about a GitHub Actions incident. But GitHub Actions isn’t the only CI-as-a-service out there. Buildkite, which is another CI company, recently released a public write-u…
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JP Camara @jpcamara.com · 31/08/2026
Here’s the SolidQueue batches 2.5 year architectural journey, filled with O(n^2) algorithms, hot row contention, excessive jobs, and much in between. There’s a strong chance you’ll learn a thing or two - I certainly did 😮‍💨 jpcamara.com/2026/08/31/s...
jpcamara.com
SolidQueue Batches: evolution and architecture
When Rosa first released SolidQueue, she did a fantastic talk on the internals of how it works and what trade-offs she made when building it. You should give it a watch. It’s where I first learned how...
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Lorin Hochstein @norootcause.surfingcomplexity.com · 26/08/2026
Sometimes I want to write a post, and then I remember that I already wrote it a couple of years ago. So I'll just re-up this one: surfingcomplexity.blog/2024/02/17/w...
surfingcomplexity.blog
What if everybody did everything right?
In the wake of an incident, we want to answer the questions “What happened?” and, afterwards, “What should we do differently going forward?” Invariably, this leads to people…
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abadidea @0xabad1dea.infosec.exchange.ap.brid.gy · 19/08/2026
➡️Americans and Canadians: do YOU recognize this man?⬅️ He collapsed on the streets of Amsterdam in 2023 with a brain injury. He wasn’t carrying ID and he lost most of his ability to communicate. His identity still hasn’t been established. Interviews near […] [Original post on infosec.exchange]
photo of an older white man with white hair and a thin beard, resting in a hospital bed looking despondent
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Mike Perham @mike.contribsys.com · 11/08/2026
The performance difference between json 2.7.6 and 3.0.0 is noticeable in Sidekiq's load testing script (~21.0sec to 20.5sec, ~4-5%). That's really hard to do with mature software like Ruby; Jean's optimization work here has been stellar.
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Jasmine 🌌🔭 @astrojaz.bsky.social · 06/08/2026
CURIOSITY HAS BEEN ON MARS FOR 14 YEARS!! HAPPY LANDIVERSARY CURIOSITY!!
Curiosity Mars rover selfie
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Chaucer Doth Tweet @levostregc.bsky.social · 02/08/2026
"Yikes, Odysseus -- you looke prettye roughe aftir your journeye." "Well, you Odyssey the othir guye!"
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Jordan Moffatt @jordanmoffatt.bsky.social · 24/07/2026
These homes on Sherwood Drive look normal, sure. But did you know they’re the site of the only residential zoning appeal in Ottawa to reach the Supreme Court of Canada? It’s a wild story of secret council meetings, expropriations, fake highways—and a side of mustard. 🧵Thread…
Two houses on a residential street
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Paul Byrne @theplanetaryguy.com · 18/07/2026
This is Comet Leonard during its approach to the Sun, imaged by Gerald Rhemann on Christmas Day 2021. The comet had been discovered earlier that year, and broke apart in 2022. This photo won the overall prize for Rhemann of the Royal Observatory Greenwich's Astronomy Photographer of the Year 2022.
A bright point of light at the top of the image is the comet's nucleus; the comet's gas and dust tails trail from the nucleus to the bottom of the image. Complex structures in the dust tail result from outbursts from the nucleus as it undergoes solar heating.
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JayIsPainting 🍁 @jayispainting.earthskyart.ca · 17/07/2026
Ok. As promised, a thread about supply chain food safety vulnerabilities in the food industry. Buckle up. It's a long one.
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Erin Biba @erinbiba.bsky.social · 17/07/2026
Like….everybody shut the fuck up and stop fighting. You are taking the wrong fucking lesson from this border-crossing smoke nightmare. The lesson is *all of earth’s ecosystems are entwined, borders mean nothing, all emitters are culpable, this is an EARTH PROBLEM NOT A COUNTRY PROBLEM*.
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Ada Palmer @adapalmer.bsky.social · 04/07/2026
A haunting, sad but hopeful imagined version of what America’s end might feel like to the future, which hits very differently now from when I planned the speech back in 2006. It compares America to the first human infant carried & born in space, & wracked by the consequences.
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Mangara @mangara42.bsky.social · 27/06/2026
This was a great read. I have so much respect for long-term open source maintainers and it's often a thankless job. So thank you, @flavorjon.es !
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Mangara @mangara42.bsky.social · 12/06/2026
I'm generally in favour of space exploration and would love to see a research outpost on the moon or Mars. This book opened my eyes to the many challenges and unknowns that we still need to solve before we can get there, let alone actual settlements. Very well written and a fun read!
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Mike Perham :sidekiq: @getajobmike.ruby.social.ap.brid.gy · 11/06/2026
I've started publishing SHA256 sums for each sidekiq gem release. Is anyone aware of any better tooling for integrity verification for published binaries before I homebrew a bunch of scripts? It's pretty awkward as is. sidekiq.org/sha256sum.txt
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Mangara @mangara42.bsky.social · 08/06/2026
This thread has great advice for anyone giving a technical presentation. I've learned a few of these the hard way!
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The Bulwark @thebulwark.com · 04/06/2026
"It’s unfortunate that almost none of the people behind these accounts know very much about the ancient world." Unfortunately, ignorance is not the only thing wrong with them. @bretdevereaux.bsky.social on Elon Musk's X and the fascist statue accounts: www.thebulwark.com/p/why-stone-...
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Carmen Huidobro @hola-soy-milk.online · 26/05/2026
I'm available for consulting from June. Dev work, DevRel, Dev Education, Content Creation, and helping teams make sensible decisions about automation without betraying their users. 17 years exp, Vienna-based, remote across Europe and beyond. Boosts massively appreciated 💜
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Rebecca R Helm @rebeccarhelm.bsky.social · 04/05/2023
I got up close with a Portuguese man-o-war and my god these animals are shockingly beautiful.
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Marty Haught @mghaught.bsky.social · 12/05/2026
Update on RubyGems.org We're responding to a coordinated spam-publishing campaign. No existing packages have been compromised; the activity is limited to newly registered accounts publishing junk packages.
rubygems.org
RubyGems.org | your community gem host
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Chise @sailorrooscout.bsky.social · 06/05/2026
Guys. Heads up. Let’s talk about Hantavirus. There have been SEVERAL bad takes and BLATANT misinformation circulating regarding this outbreak so I figured it was a good idea to make a thread about it. Stay calm. Stay vigilant. Know your facts. Here’s ALL you need to know. 🧪🧵⬇️
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Sarah Hörst @planetdr.bsky.social · 29/04/2026
Whether it not it is a planet is the absolute least interesting thing about Pluto.
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Ky @ky.fyi · 24/04/2026
I wrote about why I quit my job, and how weird and tiring tech feels these days.
ky.fyi
Do I belong in tech anymore?
On quitting, the spread of AI, and the loss of an ideal.
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Kate Marvel @drkatemarvel.bsky.social · 22/04/2026
In honor of Earth Day: a thread of environmental wins
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Benjamin Tausig @burrata.bsky.social · 20/04/2026
Getting a PhD and then working outside academia is dope. My advisees who’ve done that are more or less uniformly happy and feel that they’re using the skills they trained on. (I talked to one today who just landed a great gig). Just wanted to convey that to anyone it might benefit.
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Space Telescope Science Institute @stsci.edu · 20/04/2026
Hubble marks its 36th anniversary with a shimmering close-up of star-formation in the Trifid Nebula! Tiny, actively forming stars are eating and spewing material all around. (One at top left in brown, and two fiery red jets.) Explore it all: news.stsci.edu/4cvi5jL
A tightly cropped Hubble view of a vast star-forming region known as the Trifid Nebula. The top left is bright blue. Brown and amber colors run from top right through the center in irregular, overlapping lines to the bottom-center. At bottom right, the view is almost black. Tiny, amber-colored stars appear throughout the scene. Toward the left there is a prominent brown shape that looks like a head with two horns. The left horn points left and is wavy. The right horn is triangular and points up. The brown dust continues, flowing down, as if along a back, and up toward the top right. A prominent line, about the same length as the left horn, appears below the middle of the body, and changes from orange to red. A small, separate semi-transparent pillar is left of the head. A few slightly larger, blue foreground stars with four diffraction spikes appear sprinkled throughout.
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Meredith Whittaker @meredithmeredith.bsky.social · 14/04/2026
Notifications for deleted shouldn't remain in any OS notification database, and we've asked Apple to address this. In the meantime, you can prevent any preview text from your Signal messages from appearing in your notifications. Signal Settings > Notifications > Show “No Name or Content”
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Jess Rose @jesslynnrose.bsky.social · 13/04/2026
Rare tech for good klaxoon: @eff.org hiring for EU policy 🦜 Remote in Europe w Brussels travel 🦩 ~$110k 🦢 Co-leading their EU facing advocacy policy efforts 🦆 EFF rarely hires and most of their roles are US based, so apply now if this is your jam
paycomonline.net
Assistant Director of EU Policy
...
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K is reading and writing @singingforest-k.bsky.social · 11/04/2026
Been watching the Integrity/Artemis II splashdown and wanted to recommend the Lady Astronaut book series by @maryrobinettekowal.com - fantastic read if you like space and especially women in space.
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James Green @james-r-green.bsky.social · 11/04/2026
With a crew that featured the first Canadian, first woman and first Black man to go into deep space, and powered by collaboration between NASA, the European Space Agency and other partners, the Artemis II mission is a win for science, transatlantic cooperation, and our strength in diversity.
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Zach Weinersmith @zachweinersmith.bsky.social · 09/04/2026
So this happened www.smbc-comics.com/comic/sphere... #smbc #comics #math
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Loren Grush @lorengrush.bsky.social · 07/04/2026
Um OKAY. Breathtaking photos from the Artemis II crew's lunar flyby and eclipse viewing
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Rafael França @rmfranca.bsky.social · 07/04/2026
My team is hiring a manager to lead one of our team of engineers working in the infrastructure for the Ruby language and the Rails framework. Come work with us! www.shopify.com/careers/engi...
shopify.com
Engineering Manager- Ruby and Rails Infrastructure
ARE YOU READY? Join the fully-remote rocketship. Find your next quest to make commerce better for everyone. Unlimited growth. Crafters and hard workers only. Apply within.
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Mangara @mangara42.bsky.social · 03/04/2026
Even though this is about astrophysics, it captures many of my hesitations about using LLMs for non-trivial software development. You need to spend the time to learn your system and tools so you can tell when Claude is wrong.
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Katie Mack @astrokatie.com · 03/04/2026
More context on this #Artemis II image: * This is the night side, lit by moonlight. You can see city lights in Spain & Portugal, & a sliver of day at lower right * The Sun is entirely behind Earth, which makes it a kind of solar eclipse, but w/ Earth doing the eclipsing instead of the Moon: ☀️🌍🚀🌕
A full disc image of Earth, as seen from the Orion Crew Module. The planet is a pale blue, swirling with white clouds and glowing slightly lighter blue in place from reflected light. At lower left, a large brown landmass is Africa, with Spain and Portugal with twinkling lights where the planet curves. At top right, auroras glow in a thin green glow, just barely separated from the planet's surface. Earth is set against the black of space (pic: NASA/R.Wiseman)
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Ecology Ottawa @ecologyottawa.bsky.social · 02/04/2026
It’s time for bike share in Ottawa! Our transit system is in crisis and our roads are congested. Bike share can help! A quarter of trips in Ottawa are under 2 km—well within bikeable range. Bike share is affordable, accessible, and efficient. Learn more and sign our petition: OttawaBikeShare.ca.
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BeijingPalmer @beijingpalmer.bsky.social · 01/04/2026
Janet Stephens is amazing, and also an example - as @bretdevereaux.bsky.social pointed out recently - of how if you do the work academic historians are excited by and welcoming of outsiders making serious contributions!
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Surprised Eel Historian, PhD @greenleejw.bsky.social · 28/03/2026
Several years ago, on a whim, I started drawing a map of an eel's life travels as seen by the eel. I figured an eel thinks about its life as a linear journey, rather than a there-and-back again adventure. So I wanted to do a map to reflect this. This morning, on another whim, I finished the map!
A long, skinny map titled: "Life and Travels of the European Eel" with a subtitle reading: "From the Eel's Perspective." A label at the bottom of the map reads: "Begin Here." The map top half of the map is an mirror copy of the bottom half.

I will put the full text of the column in the alt text in an image in the next post in the thread.

 The map goes from the bottom of the page up, starting in the Sargasso Sea. An set of arrows show the eels paths to shore, then up a river and into a marshland. The arrows continue up the page to show the eel leaving the marshland and heading back downstream, and out to sea. The land is green and verdant at the bottom of the map, because the eels migrate upstream in the spring. The land is brown and dry at the top of the map, because eels migrate downstream in the autumn.

A column of text on the side tells about the eels' journeys and changes. It is more text than I can relate in the space allowed here. Each paragraph has an arrow pointing up to the next one, and they are designed to be read from the bottom of the page going upwards.
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"Online Rent-a-Sage" Bret Devereaux @bretdevereaux.bsky.social · 25/03/2026
Well, I am not sure what my analysis here is worth, but here is my 7,500 word primal scream of a military historian's take on the War in Iran. My best summary: this war is dumb as hell. acoup.blog/2026/03/25/m...
acoup.blog
Miscellanea: The War in Iran
This post is a set of my observations on the current war in Iran and my thoughts on the broader strategic implications. I am not, of course, an expert on the region nor do I have access to any spec…
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nateberkopec.bsky.social @nateberkopec.bsky.social · 25/03/2026
Has anyone applied an autoresearch loop (successfully or not) to a Ruby project outside of Shopify yet? I would like to cover it in my RubyKaigi talk.
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Urban Truth Collective @urbantruth.bsky.social · 21/03/2026
A classic. #UrbanTruth
Man at Climate Summit says “what if it’s a big hoax and we create a better word for nothing” while a presenter discusses a long list of the broad benefits for people today of addressing climate change. #ClimateCrisis #ClimateChange
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Jess Rose @jesslynnrose.bsky.social · 04/03/2026
Hello internet friends and friendly internet strangers. Things are rough out there and we gotta pay bills, so here's a thread of tech for good* roles for all y'all looking for work right now. *or just less evil, I hope!
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Zach Weinersmith @zachweinersmith.bsky.social · 03/03/2026
Wow. Donald Knuth on Ai for math: www-cs-faculty.stanford.edu/~knuth/paper...
www-cs-faculty.stanford.edu
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Robert "The Bobby Yaga" McNees @mcnees.bsky.social · 26/02/2026
There's a "is anyone even reading this" sort of honesty you get in the software update release notes from a project that's been around for a long time.
The screenshot of the release notes reads:

A new version of TeX Live Utility is available!
TeX Live Utility 1.55 is now available-you have 1.54. Would you like to download it now?
Release Notes:
Changes Since 1.54
• Fix bug 137, homepage link in Help Book.
• First release in a long time, since I don't use TeX anymore and resent the very idea of paying Apple annually for the privilege of giving away free and open-source software. Also, I'm really lazy. Please accept my apologies for all the annoying issues you've encountered in this mission-critical software.
• Updated mirror list, which was three years out of date.
• Added missing legacy mirrors, which was even more out of date.
• Added an alert on startup when user tries Homebrew's lobotomized MacTex, because those lunatics left timgr but removed its database.
Thanks for nothing, guys. Bug 142 and 144.
• Use a custom user-agent to work around the Anubis bot trap on texlive.info. Can't wait to see what else breaks because of this, thanks to the profusion of degenerate Artificial Insemination fetishists scraping websites to feed their models.
• Lists of countries in Repository/Continent are now sorted. No idea how you people let me get away with that one for the last fifteen years.
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