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Gremlin Free – Run chaos experiments to prevent outages
Get immediate access to Gremlin
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 31,697 posts.
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Automated snare drum made to the order of Aphex Twin (2014)
This musical robot consists of a high quality Ludwig snare drum automated with 13 beaters hitting different spots of the membrane from the inside. Two solenoid driven drum sticks, mounted externally, take care of the rimshots. Of course, all beaters have a precise and wide range velocity control. The snares can be…
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Google Optimize now free for everyone
Businesses often have one big question for us: How can they better understand their website visitors and deliver more relevant, engaging experiences?
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WordPress to support SQLite back end
A few months ago, a proposal was published to make WordPress officially support SQLite. After the proposal received a lot of positive feedback from the community, we started working on an implement…
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Using Free SSL/TLS Certificates from Let’s Encrypt for Nginx
Deliver modern applications with NGINX. Explore high-performance load balancing, API gateways, and web server solutions trusted by top global enterprises.
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Why does one Nginx worker take all the load?
Scaling up TCP servers is usually straightforward. Most deployments start by using a single process setup. When the need arises more worker processes are added.
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To Yarn and Back to Npm Again
Yarn solved the annoying problems we faced using npm, but it came with issues of its own. Here are the problems of Yarn and solutions that we landed on.
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Saliva-based Covid-19 test approved by FDA
The YSPH-developed test, called SalivaDirect, has been used as part of an NBA testing program and will now be available to more diagnostic laboratories.
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Postgres as a Graph Database: (Ab)Using PgRouting
Learn how to use pgRouting as a lightweight graph database solution in Postgres.
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LangChain: The Missing Manual
The handbook to the LangChain library for building applications around generative AI and large language models (LLMs).
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Interfaze: A new model architecture built for high accuracy at scale
A complete walkthrough of Interfaze: what it is, who we benchmark against (Gemini-3-Flash, Claude-Sonnet-4.6, GPT-5.4-Mini, Grok-4.3, plus task specialists like Reducto, SAM 3, Scribe v2), full results across 9 benchmarks, and code examples for OCR, object detection, and web search.
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Fixing a Buffer Overflow in Unix v4 Like It's 1973
This blog post shows how to fix a buffer overflow in the su progam of UNIX v4
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Time tracking app Mite reveals numbers for first 20 months
37signals , poster child of our industry, claims to serve more than 3 million users. What they don’t tell is, how many of those people pay for the premium version of their web apps (Basecamp, Highrise et al). All of them are served in the freemium business model , which is: use a basic version of the product for free…
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Optimizing the Ion compiler back end
In September, machine learning engineers at Mozilla filed a bug report indicating that Firefox was consuming excessive memory and CPU resources while running Microsoft’s ONNX Runtime (a machine learning library) compiled to WebAssembly.
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How we built ngrok's data platform
At ngrok, we manage a ~100TiB, 500+ table data lake, managed by a very small team. Here's a look at how we built it and what unique challenges we solved.
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Brain tunes itself to criticality, maximizing information processing
New research from Washington University in St. Louis confirms that the brain tunes itself to a point where it is as excitable as it can be without tipping into disorder, similar to a phase transition. The new research from Keith Hengen, assistant professor of biology in Arts & Sciences, is published Oct. 7 in the…
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MyFirst Kids Watch Hacked. Access to Camera and Microphone
The smartwatch for children that Gustaf Blomqvist hacked in his thesis turned out to be a security disaster. The watch had an insecure network service that anyone could access via the internet.
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A Love Letter to the People Who Build the Internet Archive
When you visit a public library, you get to meet the librarians and others who build and care for those collections. You know there are people who empty the garbage cans, who put back the borrowed books, who maintain the computers, and who determine what ends up on the shelf.
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Thunderscan: A clever device transforms a printer into a scanner (2004)
The first project that I worked on for Apple after starting in August 1979 was writing low level software for the Silentype printer (see What Hath Woz Wrought ) , a cute, inexpensive thermal printer for the Apple II, that was based on technology licensed from a local company named Trendcom. In typical Apple fashion…
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AuraFlow v0.1: a open source alternative to Stable Diffusion 3
Open-source AI is in jeopardy. As community interest in AI models skyrocketed over the past year, we noticed that development of new open-source foundational models came to a halt. Some even boldly announced that open-source AI is dead. Not so fast! We are excited to present you
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Postgres performance analysis resulted in a 10x improvement in CPU use
Heap is the only digital insights platform that shows everything users do on your site, revealing the "unknown unknowns" that stay invisible with other tools. Learn about how we improved our performance and saved millions!
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Apollo Client 2.0
Apollo Client is the ultra-flexible, community-driven GraphQL client for React, Vue.js, Angular, and other JavaScript platforms. You just describe your data requirements with a GraphQL query, and Apollo Client fetches and manages the data for you.
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A better R programming experience thanks to Tree-sitter
Modern tooling for parsing, searching, formatting, editing R code, just like for other programming languages.