Arnab Ray
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arnabray.bsky.social
Arnab Ray
@arnabray.bsky.social
40 followers 140 following 25 posts
Software Engineer @Groww. Previously at Udaan and Flipkart.
Distributed systems, programming languages, maths, painting.
Posts Replies Media Videos
Reposted by Arnab Ray
gunnarmorling.dev
"Help! My LocalDate Isn’t Flattened"

Enjoyed reading this post by @horstmann.com about the subtleties of turning Java's LocalDate into a value type for Project Valhalla. Null-ability and built-in object serialization keep haunting us.

horstmann.com/unblog/2025-...
Cay Horstmann’s Unblog
horstmann.com
November 17, 2025 at 9:07 AM
Reposted by Arnab Ray
ahiggitt.bsky.social
The Ashes - known to me as my biennial attempt to pass myself off as a cricket fan - gets underway this week.

There's something really very wonderful about 5 day, unlimited over test cricket that, for me at least, cannot be reproduced in T20, ODIs or any other audience friendly format.
November 17, 2025 at 8:35 AM
Reposted by Arnab Ray
anton.galiglobal.com
Reading about Corrosion: a Rust project that replicates a SQLite database using a gossip protocol. Really cool intersection of SQLite, CRDTs and SWIM. I also appreciate how openly they document their gnarlier failure modes and war stories so far fly.io/blog/corrosi...
Corrosion
Corrosion is distributed service discovery based on Rust, SQLite, and CRDTs.
fly.io
November 1, 2025 at 12:33 PM
Reposted by Arnab Ray
tigerbeetle.com
Tracking Time Without Clock

A couple of code patterns for handling time, by matklad

tigerbeetle.com/blog/2025-10...
October 21, 2025 at 12:47 PM
Reposted by Arnab Ray
willdalrymple.bsky.social
‘One of the oldest urban centres on the planet’: Gaza’s rich history in ruins.

My @guardian piece on the erasure of Gaza's past. As we mourn incalculable human losses, learning about its past can help us better understand the present
www.theguardian.com/world/2025/o...
‘One of the oldest urban centres on the planet’: Gaza’s rich history in ruins
The territory’s ancient heritage has too often been ignored. As we mourn incalculable human losses, learning about its past can help us better understand the present
www.theguardian.com
October 17, 2025 at 12:43 PM
Reposted by Arnab Ray
mahoganygaspipes.bsky.social
Some other material on this subject.
October 19, 2025 at 12:00 PM
Reposted by Arnab Ray
kateteltscher.bsky.social
The Chinese fan palm and cobra lily by Vishnuprasad from Henry Noltie’s Flora Indica, a masterpiece of botanical-art-historical detective work.
The book accompanies a stunning exhibition at Kew Gardens.
@rbgkew.bsky.social @willdalrymple.bsky.social
@sathnam.bsky.social
@eicathomefinn.bsky.social
October 16, 2025 at 9:43 AM
Reposted by Arnab Ray
skamille.themanagerswrath.com
Occasionally I do a deep dive of thinking about whether AI will really fundamentally eliminate the need for software engineers and my conclusion remains the same: it won't. Might change the employment curve in some ways but barring the big singularity or w/e I don't see it removing the job
October 11, 2025 at 8:00 PM
Reposted by Arnab Ray
edzitron.com
AI has lost the dunce vote. It’s over
Nate Silver @NateSilver538 • 5h •.° I'm just one person, and my programming needs are somewhat unusual (building various kinds of statistical forecasting models). But I'm just not seeing the consistent productivity gains from LLMs that I would have expected if you'd asked me 6 months ago.
October 11, 2025 at 11:10 PM
Reposted by Arnab Ray
3blue1brown.com
Ever since I made a video about Fourier Transforms, one of the most requested topics on the channel has been its close cousin, the Laplace Transform.

I've been having a lot of fun animating a mini-series about this topic, and the main part is now out.

youtu.be/j0wJBEZdwLs
But what is a Laplace Transform?
YouTube video by 3Blue1Brown
youtu.be
October 12, 2025 at 12:49 PM
Reposted by Arnab Ray
artem.krylysov.com
MMAP is incredibly fast when the dataset fits in memory, but it slows to a crawl when it doesn't, especially if the workload is mostly random point lookups. Speaking as someone who built an MMAP-based key-value store before :) Obligatory paper from @andypavlo.bsky.social db.cs.cmu.edu/mmap-cidr2022/
October 11, 2025 at 3:39 PM
Reposted by Arnab Ray
bevy.org
Bevy 0.17 is out now! It features Raytracing, Improved Observers / Events, UI Widgets, Rust Hotpatching, Light Textures, DLSS, Tilemap Chunks, Web Assets, Reflect Auto-Registration, UI Gradients, Raymarched Atmosphere, Virtual Geometry BVH Culling, and more!

bevy.org/news/bevy-0-17
Bevy 0.17
Bevy is a refreshingly simple data-driven game engine built in Rust. It is free and open-source forever!
bevy.org
September 30, 2025 at 7:41 PM
Reposted by Arnab Ray
elderman.bsky.social
This only happens to you once
September 26, 2025 at 7:39 PM
Reposted by Arnab Ray
quantamagazine.bsky.social
Happy 100th birthday, quantum mechanics!
‘It’s a Mess’: A Brain-Bending Trip to Quantum Theory’s 100th Birthday Party | Quanta Magazine
Hundreds of physicists (and a few journalists) journeyed to Helgoland, the birthplace of quantum mechanics, and grappled with what they have and haven’t learned about reality.
www.quantamagazine.org
September 13, 2025 at 3:46 PM
Reposted by Arnab Ray
quantamagazine.bsky.social
“It’s hard to overestimate the influence of Fourier analysis in math,” said mathematician Leslie Greengard. “It touches almost every field of math and physics and chemistry and everything else.”
What Is the Fourier Transform? | Quanta Magazine
Amid the chaos of revolutionary France, one man’s mathematical obsession gave way to a calculation that now underpins much of mathematics and physics. The calculation, called the Fourier transform,…
www.quantamagazine.org
September 4, 2025 at 8:04 PM
Reposted by Arnab Ray
carnage4life.bsky.social
The culture of working in tech these days is being constantly worried about being overworked or unemployed.

Take care of yourselves. We are replaceable cogs to our employers but irreplaceable to our family and friends.
September 5, 2025 at 3:57 AM
Reposted by Arnab Ray
jonathanaldrich.bsky.social
How do bottom-up, LR parsers work? Learn about this powerful and flexible parsing technique in my new Programming Language Pragmatics video!

Video: youtu.be/Ct2fLcbFkJM
Programming Language Pragmatics playlist: tinyurl.com/PLP5vids
PLP 2.3 part 2: Bottom-Up LR Parsing
YouTube video by Jonathan Aldrich
youtu.be
August 28, 2025 at 1:57 AM
Reposted by Arnab Ray
shriram.bsky.social
Super excited to release the latest version of "A Data-Centric Introduction to Computing" (DCIC). See release notes for 2025-08-27 for what's changed and new (a LOT!): dcic-world.org/2025-08-27/R....
dcic-world.org
A Data-Centric Introduction to Computing
This book is an introduction to computer science. It will teach you to program, and do so in ways that are of practical value and importance. However, it will also go beyond programming to computer sc...
dcic-world.org
August 28, 2025 at 1:21 AM
Reposted by Arnab Ray
jefftiedrich.bsky.social
weird how the guy born into obscene wealth, bailed out repeatedly, allowed to fail upwards forever until he fell ass-backwards into the presidency, and then was declared by the Supreme Court to be a Very Special Boy Who Can Crime Forever never stops whining about how everything is rigged against him
August 5, 2025 at 8:25 PM
Reposted by Arnab Ray
astrokatie.com
Every reputable expert I know considers mRNA vaccine technology to be one of the most revolutionary advances in medicine in our lifetimes. Its inventors won the Nobel Prize in 2023. Shutting it down now is pointless self-harm to humanity.
ericmgarcia.bsky.social Eric Michael Garcia @ericmgarcia.bsky.social · Aug 5
Release from HHS: HHS will wind down its development of the mRNA vaccine development activities under the Biomedical Advanced Research and Development Authority (BARDA).
HHS Winds Down mRNA Vaccine Development Under BARDA WASHINGTON, DC—AUGUST 5, 2025—The U.S. Department of Health and Human Services (HHS) today announced the beginning of a coordinated wind-down of its mRNA vaccine development activities under the Biomedical Advanced Research and Development Authority (BARDA), including the cancellation and de-scoping of various contracts and solicitations. The decision follows a comprehensive review of mRNA-related investments initiated during the COVID-19 public health emergency. “We reviewed the science, listened to the experts, and acted,” said HHS Secretary Robert F. Kennedy, Jr. “BARDA is terminating 22 mRNA vaccine development investments because the data show these vaccines fail to protect effectively against upper respiratory infections like COVID and flu. We’re shifting that funding toward safer, broader vaccine platforms that remain effective even as viruses mutate.”
August 5, 2025 at 10:54 PM
Reposted by Arnab Ray
kateconger.com
Five-ish years ago, @lizthegrey.com told me tech workers needed to organize because the tech giants would automate their jobs, the market would flood with talent and they would lose bargaining power. I thought it was unlikely. Here’s a story about me being wrong. www.nytimes.com/2025/08/04/t...
So Long to Tech’s Dream Job
www.nytimes.com
August 4, 2025 at 3:04 PM
Reposted by Arnab Ray
alilleybrinker.com
IMO we need three major axes for talking about open software:

- Open source: anyone can use, modify, redistribute the source code
- Open contribution: anyone can help make it better
- Open governance: anyone can wield power over what happens to it
alilleybrinker.com Andrew Lilley Brinker @alilleybrinker.com · Aug 5
I think traditionally "source available" is about the licensing (it's the blanket term for licenses which do not meet the Open Source Definition). We probably do need a separate axis that's about contribution openness.
August 5, 2025 at 3:56 PM
Reposted by Arnab Ray
dieworkwear.bsky.social
We should have a larger convo about how companies like American Eagle use beautiful people to add glamor to unglamorous products. In 2023, a young Bangladeshi woman committed suicide at a factory that made American Eagle clothes bc of abuse. This is the cost of cheap, trendy clothes.
Text says: Suicide and abuse at fashion factory supplying Under Armour and Columbia INVESTIGATION A young woman allegedly in forced labour at a clothes factory in Jordan killed herself while making products for the global fashion brands, i has discovered The sportswear giants Under Armour and Columbia have been hit by claims of forced labour in a factory making their clothes, after systemic abuse and exploitation allegedly led to a worker’s death by suicide, i can exclusively reveal. The two companies have launched urgent inquiries over the death of a young Bangladeshi woman at a major supplier’s facility in Jordan, uncovered by a months-long investigation. American Eagle, a major retailer with more than 1,000 stores in the US, admitted that it also uses the site and is taking remedial action. Tureza Akter, 21, died in her dormitory in November last year, just over a month after arriving at the Fine Apparel site in the city of Zarqa, about 10 miles north-east of the capital, Amman. It is run by Needle Craft, a major Jordan-based clothes manufacturing company. Ms Akter is said to have been fined many times for missing excessive targets. She was abused by a supervisor hours before she died, an official report states. Sources say that migrant labourers are tricked into “dehumanising” 16-hour days in the factory for less money than promised, while bosses intimidate them and withhold their passports. Sexual harassment is also said to be common. Members of the largely female workforce are apparently solicited by staff for sex and made to strip in front of managers. The factory owners have launched an independent review and say they are supporting Ms Akter’s family after her “tragic” death. i began its investigation after being alerted by Labour Behind the Label. The British campaign group, which lobbies for workers’ rights in the fashion industry, called the findings “horrifying and shameful”. Confronted with the evidence, the factory and companies it s… Photo of an American Eagle ad showing Sydney Sweeney. It says "Sydney Sweeney Has Great Jeans." A screenshot of American Eagle's mens jeans. They retail for $50 but have been discounted to $35. These are cotton-poly blended stretch jeans in various cuts, colors, and washes.
July 30, 2025 at 12:47 AM
Reposted by Arnab Ray
zeu.dev
@bsky.app overtaking X for desired AND admired community platform for devs!
Technology | 2025 Stack Overflow Developer Survey
survey.stackoverflow.co
July 29, 2025 at 8:01 PM
Reposted by Arnab Ray
shriram.bsky.social
Well, here we go. After well over two years, here's a new version of my programming languages book, PLAI (v3.2.5). As always, free of cost! Can't thank enough all the people named in the acknowledgments. Enjoy!
www.plai.org
Programming Languages: Application and Interpretation
Site for the PLAI book
www.plai.org
July 14, 2025 at 5:20 AM