Self-hosting Langflow behind a public static site

Fri, 22 May 2026 16:00:00 +0000

Astra Docs Chat is public on Cloudflare Pages. Langflow runs on a private instance: reachable from the Pages Function proxy, not from browsers directly.

This post covers the ops shape I use: Dockge/compose, PostgreSQL persistence, environment variables, CORS as belt-and-braces, and what you expose vs keep internal.

Series: Building Astra Docs Chat · Proxy pattern

Public chat: Astra Docs Chat

Topology ¶

Internet → jamieede.com (Hugo + Pages Functions)
              ↓ HTTPS + x-api-key (server-side only)
           Langflow (private host / tunnel; URL not in HTML or JS)
              ↓
           OpenAI (embeddings), DeepSeek (chat), Astra DB (vectors)

Visitors never receive the Langflow hostname in HTML or JS. DevTools on /astra-chat should show only same-origin /api/astra-chat (proxy verification ).

Docker on Jamie Ede

Self-hosting Langflow behind a public static site

Topology ¶