An edge-native showroom and inventory CMS for a used-car dealer in Denpasar — Next.js on Cloudflare Workers with D1 and KV, so the owner manages stock, photos and sold units without touching code.
Built for a used-car dealership in Denpasar, Bali.
A used-car dealer needed more than a brochure site. Inventory changes every week, cars sell, prices move — and the owner had to be able to update all of it from a phone, with photos, without calling a developer. The site also had to rank locally and push buyers straight into WhatsApp.
I ran Next.js 15 on Cloudflare Workers through OpenNext, with D1 (SQLite) for inventory and KV for uploaded photos — no origin server, no separate storage bucket. Drizzle ORM keeps the D1 queries type-safe, and sold cars are filtered out at the query layer so they disappear from the public site but stay in the admin panel.
The admin panel uses a small custom auth — PBKDF2-SHA256 password hashes and HMAC-signed session cookies behind middleware — instead of a heavy dependency. Owners add, edit, delete and mark cars as sold, and drag-and-drop photos with a chosen cover image. The public side has a catalogue with five filters that can be shared by URL, detail pages with a lightbox gallery, WhatsApp deep links per car, and structured data (AutoDealer + Product), a dynamic sitemap and per-page metadata for SEO.
A live showroom at makmurmotor.biz.id that the dealer runs on their own: inventory, photos and sold status are all self-serve, pages render fresh from D1 on every request, and there is no server for anyone to patch.