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Dan Mercede
Dan Mercede

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The Two-Plane Architecture

The Two-Plane Architecture

Diagram · 2026-06-29 · 08:00 AM PT

The two-plane architecture. A public ingress plane carries the world to your apps: the visitor's browser reaches the Cloudflare edge (DNS, TLS, WAF, CDN, DDoS, optional Access), then one path per hostname (a Cloudflare tunnel dialing outbound, or a published 443 with an origin cert) to a single Traefik reverse proxy that binds 80 and 443 and routes by host and path over a private Docker network to your app containers, reached by service name rather than localhost. A separate private admin plane carries the operator to everything else over a Tailscale mesh VPN: SSH, dashboards, metrics, databases, secrets stores, and internal tools. The two planes join only at a deliberate meet point where at most one service at a time is exposed via an IP allowlist, never by accident.
One box, one reverse proxy, zero public inbound ports: a private mesh for everything else.

Tags: #systems #infra #execution

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