Urgent.News

What's breaking now, across thousands of outlets.

More in Tech

An uncalibrated classifier is worse than no classifier

What I learned building a website that rewrites itself for whoever is reading it, on ₹0 of infrastructure. Project Blog : https://santhosh-reddy.vercel.app/en/blog/8 Project Breakdown…

  • Uncalibrated classifier performs worse than no classifier
  • Poorly calibrated traffic split leads to slower convergence
  • Calibration solution over raw accuracy improvement

Trying unknown Mac software without trusting it: a disposable macOS VM on Apple Silicon

At some point you want to try a Mac app you don't fully trust: a menu bar utility from a one-person shop, an installer someone linked in a forum, a CLI that wants sudo .

  • Disposable macOS VM on Apple Silicon tests unknown software safely.
  • VM provides separate macOS environment without affecting host system.
  • Requirements include Apple Silicon Mac, macOS 14, and compatible VM application.

"A second operation was started on this context" — the EF Core bug that only shows up under load

"A Second Operation Was Started on This Context" — The EF Core Bug That Only Shows Up Under Load You’ve debugged this error before: InvalidOperationException: A second operation was started on this…

  • Second operation started on EF Core bug under load conditions.
  • Root cause: service-lifetime design issue with fire-and-forget context leak.
  • Resolution: ensure one scope per unit of work, manage scopes explicitly.

Optimizing User Idle Detection in React

Managing user idle states efficiently is critical for performance-heavy applications. In the latest update to react-hook-lab , I have refined the useIdle hook to provide more granular control over…

  • React's useIdle hook updated for precise idle detection control.
  • Flexible throttle window prevents excessive re-renders during rapid events.
  • Hook dynamically adjusts throttle duration based on timeout for optimal performance.

More from Friday 2 October →