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| 151. | Redis is fast – I'll cache in Postgres (dizzy.zone) | |
| 352 points | 2025 | author dizzyVik showed up | their comment | thread
“Redis is definitely faster. I was specifically not going for absolute peak performance for either redis or postgres - that would require going down to the wire…” | ||
| 152. | Debugging an Undebuggable App (bryce.co) | |
| 351 points | 2025 | author brycebostwick showed up | their comment | thread
“Hey all! Author here, happy to answer any questions. Thanks xmprt for sharing!” | ||
| 153. | Writing an LLM from scratch, part 13 – attention heads are dumb (gilesthomas.com) | |
| 351 points | 2025 | author gpjt showed up (and submitted it) | their comment | thread
“I endorse this comment ;-) That's definitely the route I've optimised for for reading the series.” | ||
| 154. | Nix – Death by a Thousand Cuts (dgt.is) | |
| 348 points | 2025 | author jonotime showed up (and submitted it) | their comment (+1 more) | thread
“Your TLDR is spot on. Yes, my intent was to be on desktop use since most things I read dont consider that specifically. I did talk about how I would keep this running on…” | ||
| 155. | Why Android can't use CDC Ethernet (2023) (jordemort.dev) | |
| 348 points | 2025 | author jordemort showed up | their comment | thread
“I wrote this after a bad week at a previous job trying to get an Android device to work with a CDC Ethernet adapter. Since writing this, a couple people have let me know…” | ||
| 156. | An SVG is all you need (jon.recoil.org) | |
| 347 points | 2025 | author jonludlam showed up | their comment | thread
“I've just made a ninja edit of the post as it didn't really make clear a quite important point - the SVG is literally 20 years old, and still works, astonishingly. I'm…” | ||
| 157. | Lossless video compression using Bloom filters (github.com) | |
| 346 points | 2025 | author rh3939 showed up (and submitted it) | their comment (+2 more) | thread
“I received some great feedback so I have decided to focus on raw video for now and more rigorous testing around noisy videos. I will continue to update the repo…” | ||
| 158. | For algorithms, a little memory outweighs a lot of time (quantamagazine.org) | |
| 343 points | 2025 | author bbrubaker showed up | their comment | thread
“If you ask a complexity theorist, they will tell you that they did in fact have a general intuition that certain problems require space close to to linear in time to…” | ||
| 159. | Abundance isn't going to happen unless politicians are scared of the status quo (inpractice.yimbyaction.org) | |
| 342 points | 2025 | author LauraFoote showed up | their comment | thread
“I'm super curious about why you think YIMBY-ism is passive. I feel like the main criticism we've often gotten is that we're too in-your-face with our advocacy. Say more.” | ||
| 160. | MCP is eating the world (stainless.com) | |
| 339 points | 2025 | author yjp20 showed up | their comment | thread
“You're right, that snippet was ai-generated and I forgot to action one of my todos to fix that snippet. This was negligent on my part, and I hope you'll forgive me.…” | ||
| 161. | Mycoria is an open and secure overlay network that connects all participants (mycoria.org) | |
| 336 points | 2025 | author dhaavi showed up | their comment | thread
“thanks for the post! A little more background info for my fellow HN people: I've spent that last 8 years building privacy technology at Safing as Co-Founder/CTO. The…” | ||
| 162. | Over-regulation is doubling the cost (rein.pk) | |
| 336 points | 2025 | author pkrein showed up | their comment | thread
“I wanted to address the most common theme in the comments: safety. The regulatory burdens I've encountered and described were not related to safety requirements. They…” | ||
| 163. | TL;DW: Too Long; Didn't Watch Distill YouTube Videos to the Relevant Information (tldw.tube) | |
| 328 points | 2025 | author stong1 showed up | their comment | thread
“Hi HN! I'm the author of this service. Thank you for your support. There may have been some temporary downtime due to residential proxy running out of bandwidth. I have…” | ||
| 164. | Why DeepSeek is cheap at scale but expensive to run locally (seangoedecke.com) | |
| 328 points | 2025 | author gfysfm showed up | their comment | thread
“Also not a ML researcher, just an interested engineer, so I'm sure I got some things wrong. What I meant was that the single-user scenario is going to get dramatically…” | ||
| 165. | Five years of React Native at Shopify (shopify.engineering) | |
| 324 points | 2025 | author mustafa01ali showed up | their comment | thread
“the stated screen load time includes server round-trip, parsing, layout, formatting, and rendering.” | ||
| 166. | You did no fact checking, and I must scream (shkspr.mobi) | |
| 324 points | 2025 | author edent showed up | their comment (+2 more) | thread
“Elon directly screwed over some of my friends. He turned Twitter from an imperfect mess into a shit filled pit of despair. I don't want to encourage anyone to use his…” | ||
| 167. | The Deck: An open-source cross-platform multiplayer card game engine in Flutter (github.com) | |
| 323 points | 2025 | author igor_st showed up (and submitted it) | their comment | thread
“Thanks for the feedback, I'll update the content, especially the readme! More details on the implementation are here (same content)” | ||
| 168. | DeepScaleR: Surpassing O1-Preview with a 1.5B Model by Scaling RL (pretty-radio-b75.notion.site) | |
| 322 points | 2025 | author mluo showed up | their comment | thread
“This is not a Chinese model, btw I'm American” | ||
| 169. | A USB Interface to the "Mother of All Demos" Keyset (righto.com) | |
| 321 points | 2025 | author kens showed up | their comment | thread
“Author here if there are any questions...” | ||
| 170. | Show HN: Lightpanda, an open-source headless browser in Zig (github.com) | |
| 319 points | 2025 | author fbouvier showed up (and submitted it) | their comment | thread
“The browser is made from scratch (not based on Chromium/Webkit), in Zig, using v8 as a JS engine. Our idea is to build a lightweight browser optimized for AI use cases…” | ||
| 171. | 3dfx: So powerful, it's kind of ridiculous (2023) (abortretry.fail) | |
| 319 points | 2025 | author BirAdam showed up | their comment | thread
“I should have been more clear about this in the article, but it was a combination of two different factors. First, the company alienated OEMs by making their own cards.…” | ||
| 172. | Opencode: AI coding agent, built for the terminal (github.com) | |
| 319 points | 2025 | author thdxr showed up | their comment (+2 more) | thread
“we're a little over a month into development and have a lot on our roadmap the cli is client/server model - the TUI is our initial focus but the goal is to build…” | ||
| 173. | Everyone knows your location, Part 2: try it yourself and share the results (timsh.org) | |
| 318 points | 2025 | author timsh showed up | their comment | thread
“author here to answer any questions or discuss an app” | ||
| 174. | A CT scanner reveals surprises inside the 386 processor's ceramic package (righto.com) | |
| 314 points | 2025 | author kens showed up | their comment | thread
“Author here for all your CT scanning questions :-)” | ||
| 175. | The Junior Hiring Crisis (people-work.io) | |
| 314 points | 2025 | author ah979 showed up | their comment | thread
“yeah, what you're describing is absolutely what I would love to see more of. And of course my thinking was biased by my own observations at companies I've worked at as…” | ||
| 176. | Lambda Calculus in 383 Bytes (2022) (justine.lol) | |
| 313 points | 2025 | author jart showed up | their comment | thread
“If anyone wants to see an example of an awesome program you can run on the 520 byte version of my lambda calculus virtual machine (Blc) then check out If you run the…” | ||
| 177. | NIH is cheaper than the wrong dependency (lewiscampbell.tech) | |
| 310 points | 2025 | author LAC-Tech showed up | their comment | thread
“I pointed to tigerbeetle because they're one of the few companies I know of who 1) have a philosophy about dependencies and 2) talk about it openly in an easy to quote…” | ||
| 178. | Learn Yjs Interactively (learn.yjs.dev) | |
| 309 points | 2025 | author jakelazaroff showed up | their comment | thread
“I think our own almost server is almost exactly what you’re looking for? Y-Sweet [1] is open source, written in Rust and persists documents to S3. We offer a hosted…” | ||
| 179. | Why I code as a CTO (assembled.com) | |
| 308 points | 2025 | author johnjwang showed up (and submitted it) | their comment (+1 more) | thread
“I hear what you’re saying, though I’ve never “crowed about regularly checking code in on Saturdays and Sundays” and I think that’s a false characterization of my…” | ||
| 180. | Writing a simple pool allocator in C (8dcc.github.io) | |
| 307 points | 2025 | author 8dcc showed up (and submitted it) | their comment | thread
“Thank you all for the instructive comments, I made some changes to the article since I first posted it: - Added a link to this HN post. - Renamed some variables and…” | ||
| More | ||