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Deterministic Simulation Testing in Rust: A Theater of State Machines

news.ycombinator.com Unknown 2025-12-09 04:36:58

It's been just a year since we wrote about how we implemented deterministic simulation testing (DST) of our Go database (FrostDB). Since then, we have been hard at work writing our new database backed by object storage in Rust (read more here about why). In this blog post, I want to lay out the approach we took to build our new Rust database with DST principles front-and-center and how it compares to the approach we took with FrostDB. As a quick recap, DST tests are randomized full system integ

Topics: dst failure machines message state

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Once a death sentence, cardiac amyloidosis is finally treatable

news.ycombinator.com Simar Bajaj 2025-12-13 23:23:20

When James Hicks, 75, was diagnosed with heart failure, it felt like the beginning of the end. Mr. Hicks, a former railroad worker from Rogers, Ark., had quietly dealt with various health problems, from carpal tunnel syndrome in both arms to dual knee replacements. But now his heart was giving out, and the doctors chalked it up to the wear and tear of old age. “There’s just not exactly a surgery to fix this,” he said. Soon enough, Mr. Hicks couldn’t walk from his grandson’s high school basketb

Topics: doctors failure heart hicks mr

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A Bytecode VM for Arithmetic: The Parser

news.ycombinator.com Abhinav Sarkar 2025-12-14 16:37:01

In this series of posts, we write a bytecode compiler and a virtual machine for arithmetic in Haskell. We explore the following topics: In this series of posts, we write a bytecode compiler and a virtual machine for arithmetic in Haskell. We explore the following topics: Parsing arithmetic expressions to Abstract Syntax Trees (ASTs). Compiling AST s to bytecode. s to bytecode. Interpreting AST s. s. Efficiently executing bytecode in a virtual machine (VM). Disassembling bytecode and decomp

Topics: bsc expr fails input let

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Forget passwords often? Android may soon let you disable Failed Authentication Lock (APK teardown)

androidauthority.com Unknown 2026-01-21 14:09:36

Mishaal Rahman / Android Authority TL;DR Android 15 and newer devices include a Failed Authentication Lock feature that locks the device screen after detecting multiple failed login attempts in apps or settings. Unlike other theft protection features, this feature is enabled by default on all devices, and there’s currently no way for users to turn it off. Google may soon add a new option to the theft protection settings that will allow users to turn off Failed Authentication Lock. In additio

Topics: android authentication failed features lock

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A brief history of hardware epidemics

news.ycombinator.com Alan B 2026-02-28 02:18:39

Living creatures aren’t the only things to be ravaged by epidemics. Computers, even Macs, can die prematurely when there are widespread manufacturing failures. I’d like to unearth a couple of mass graves from the past that have surely contributed to landfill around the world: capacitor plague and lead-free solder, and a recent problem with butterflies. Capacitor plague 1999-2007 Capacitors or ‘caps’ have a chequered history. Acting as temporary stores of electric charge, they’re used extensive

Topics: apple failure free lead problems

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Cloudflare: Outage not caused by security incident, data is safe

bleepingcomputer.com Unknown 2026-03-21 01:09:24

Cloudflare has confirmed that the massive service outage yesterday was not caused by a security incident and no data has been lost. The issue has been largely mitigated. It started 17:52 UTC yesterday when the Workers KV (Key-Value) system went completely offline, causing widespread service losses across multiple edge computing and AI services. Workers KV is a globally distributed, consistent key-value store used by Cloudflare Workers, the company’s serverless computing platform. It is a funda

Topics: cloudflare failure kv storage workers

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More than 376,000 Tesla Model Y, Model 3s have faulty steering

arstechnica.com Unknown 2025-11-17 18:10:59

Some Tesla owners have yet another thing to worry about. As sales crash in Europe and protests gather outside Tesla showrooms in the US as a result of the CEO's political engagement, it now emerges that more than 376,000 Model Y crossovers and Model 3 sedans are at risk for power steering failure. So far, it has resulted in more than 3,000 warranty claims and caused 570 crashes, according to Tesla and the National Highway Traffic Safety Administration. Federal investigators have known about the

Topics: car failure model power steering

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I tried the new PS3 emulator on Android and it technically works, but it has a long way to go

androidauthority.com Unknown 2025-11-17 21:00:53

Nick Fernandez / Android Authority The era of PS3 emulation on Android is here! To some degree, at least. Android emulation geeks are abuzz with excitement over aPS3e, the first native PS3 emulator for Android phones. Sure, most of the code appears to be cobbled together from open-source PS3 emulation projects like RPCS3, Vita3K, and Termux (probably breaking their licenses), but the fact that it’s working at all is a big step forward. The app itself has now been removed from GitHub due to th

Topics: failed games install installed launch

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Latest Tech News

Deterministic Simulation Testing in Rust: A Theater of State Machines

Once a death sentence, cardiac amyloidosis is finally treatable

A Bytecode VM for Arithmetic: The Parser

Forget passwords often? Android may soon let you disable Failed Authentication Lock (APK teardown)

A brief history of hardware epidemics

Cloudflare: Outage not caused by security incident, data is safe

More than 376,000 Tesla Model Y, Model 3s have faulty steering

I tried the new PS3 emulator on Android and it technically works, but it has a long way to go

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