RailMate Bangladesh: A Train Search and Live Updates App for Passengers
RailMate Bangladesh is a train app and website for passengers: search trains between stations, see schedules and live delay updates, in English and Bangla.
Articles
Field notes on Next.js, Supabase, React Native and shipping products from Bangladesh.
One Supabase RPC Function for Web and Mobile: Sharing Search Logic Between Next.js and React Native
Stop schema drift between web and mobile: keep search logic in one Supabase RPC function, called from Next.js and React Native with generated types.
GitHub Contents API CMS in Next.js: Publish Markdown Without a Database
Use the GitHub Contents API as a CMS in Next.js 16: commit Markdown from a browser admin, handle the sha rule and 409 conflicts, with no database to run.
Rate Limiting Next.js API Routes with Upstash Redis (and Why In-Memory Fails on Serverless)
A production pattern for Next.js rate limiting on Vercel: Upstash sliding windows, per-IP and per-email keys, correct 429 headers, and the in-memory trap.
Supabase Email OTP in Next.js: 6-Digit Codes Instead of Magic Links
Implement Supabase email OTP in Next.js with 6-digit codes: template setup, send and verify route handlers, SSR cookies, brute-force limits and safe errors.