Real-Time Operations Dashboard on the Edge

The Challenge

Northwind dispatches more than 1,400 technicians across four countries. Coordinators were assigning jobs from shared spreadsheets and phone calls, so the office never had a reliable view of who was where. Assigning an urgent job took an average of 18 minutes, and double-bookings cost them SLA penalties every month.

An earlier attempt at a single-page app stalled: it took nine seconds to load on technicians’ mid-range Android phones and was unusable on patchy rural connections.

The Solution

We built a server-first web application that treats the network as unreliable and the edge as the primary runtime.

• Edge-rendered views. Job boards, technician schedules, and job detail pages render in Cloudflare Workers, so the first screen is useful HTML in under 100ms instead of a loading spinner.
• Edge data layer. Job state lives in a strongly consistent coordination layer at the edge, which removes double-booking races without a central database round trip on every assignment.
• Live updates without a heavy client. A WebSocket island streams assignment changes to the coordinator board; every other screen works as plain HTML forms with progressive enhancement.
• Offline-tolerant field view. Technicians can open, update, and close jobs on a weak signal; writes queue locally and reconcile when the connection returns.

Key Outcomes

• Edge TTFB: under 100ms median across all four operating regions
• Dispatch Speed: average urgent assignment time cut from 18 minutes to under 7
• Reliability: 99.98% uptime over the first 12 months, with no double-booking incidents
• Field Adoption: 94% of technicians active weekly within six weeks of rollout