Urgent.News

What's breaking now, across thousands of outlets.

Tech

Não há mais razão para o software ser lento

Article URL: https://danluu.com/perf-opt/ Comments URL: https://news.ycombinator.com/item?id=49395628 Points: 227 # Comments: 168

Translated from Portuguese Read in Portuguese

The article discusses how large language models (LLMs) are making it easier to optimize software performance. The author describes an experiment where they used an LLM to improve the performance of a regex engine, FRE, by having an agent loop for a month to optimize its performance. The resulting engine showed a 2x-4x performance improvement for simple queries and a 7% speedup for more complex queries.

The author suggests that LLMs have lowered the barrier to entry for building complex software, such as JIT compilers and custom databases, and that it's now possible to do technical work that previously required a lot of time and expertise in a matter of minutes.

Written by urgent.news from Hacker News Best's report — not a translation of it. Machine-written — may contain errors; check the original before relying on it.

Also reported by 1 other outlet

Read the original at danluu.com →

More in Tech

Japanese space tech startup Letara expands beyond satellite thrusters with $16M

Japanese space startup Letara is betting its hybrid rocket technology can move beyond small satellite thrusters into a broader market for space, defense and security, after raising ¥2.6 billion ($16…

  • Letara expands into large rocket systems for defense and security markets.
  • Hybrid propulsion uses plastic and rubber as solid fuel, separate from liquid oxidizer.
  • Global hybrid rocket market projected to reach $2.6 billion by 2032.

How I’m Improving a Local Service Website for SEO, AEO & GEO

I’ve been working on improving a local pressure washing website in Jacksonville, FL, and I’ve been focusing on more than just traditional SEO.

  • Jacksonville pressure washing business overhauls SEO strategy
  • Focus on image implementation, semantic HTML, internal linking
  • Aims to improve AI search and LLM visibility while maintaining traditional SEO

JavaScript Sandbox Escape via Type Confusion in isolated-vm

1. Basic Information Article Name : GHSA-864f-rcv7-6rh4: Critical Type Confusion Vulnerability in isolated-vm Publisher : Endor Labs Publication Date : 2026-08-20 Update Date : None Severity : high…

  • Critical type confusion vulnerability in isolated-vm JavaScript sandbox
  • Untrusted code can escape sandbox, gain host process control
  • Exploits affect Node.js, V8, n8n, Activepieces, Mastra AI

The jitter wasn't in the interpolation. It was in the schedule.

The avatar standing on my desktop looked like it was stuttering. One symptom — but it turned out to have three causes of completely different kinds.

  • Jitter issue had three causes: interpolation, overlap, and visibility
  • Interpolation not root cause; schedule timing caused jumps
  • Guard missed procedural-motion path, leading to stutter

More from Saturday 22 August →