Why edge caching still wins in 2026
A short look at cache keys, stale-while-revalidate, and keeping origin quiet under load.
Weekly notes
Building calm products on noisy networks
Practical writing about reliability, CDN edge patterns, and shipping software that stays online when the path gets rough.
WebSockets behind a reverse proxy
Upgrade headers, idle timeouts, and the small mistakes that break realtime features.
TLS at the edge, apps on loopback
Terminate where users land; keep internal services private on localhost.
About
Northline is a small independent journal. We publish infrastructure notes for builders who care about uptime.