Engineering blog
Practical writing for senior developers, engineering managers and technical founders — performance, data, SaaS architecture, applied AI, payments and mobile.
How DEV3 AI Event Writer reads a poster with a vision model, re-validates every field like untrusted form input, flags what the model doubts, and matches venues and organisers to existing The Events Calendar records before creating one.
How DEV3 AI Events & Tickets encodes QR codes in plain PHP with Reed–Solomon and mask scoring, draws vector PDF tickets, scans with BarcodeDetector or jsQR, and admits each ticket once with a single conditional UPDATE.
