Stop Redirecting in useEffect: Use Expo Router Protected Routes Instead

A bite-sized guide to modern auth routing in Expo Router: replace imperative redirects with guarded route groups, handle onboarding cleanly, and avoid root-layout timing bugs.

Where Did 5 Orders Go? The Two Rules That Fix Timezone Bugs Across Your Stack

A real-world bug, a universal mental model, and the patterns every engineer needs to avoid missing data and scheduling disasters — with interactive demos.

Engineering Real-Time: A Deep Dive Into WebSockets, From Protocol to Production

From HTTP handshakes to pub/sub scaling — how WebSockets actually work under the hood, with interactive demos you can explore.