Caddy Reverse Proxy VPS – Automatic HTTPS in 5 Minutes

Quick answer: Caddy is a reverse proxy with automatic HTTPS – point DNS, save Caddyfile, done. No Certbot needed.

Minimal Caddyfile

app.yourdomain.com {
    reverse_proxy localhost:3000
}

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Caddy vs Traefik vs nginx?

Caddy: easiest HTTPS (auto-TLS). Traefik: great with Docker labels. nginx: max control, more config. Solo devs often prefer Caddy.

Do I need Certbot with Caddy?

No. Caddy obtains and renews Let's Encrypt certs automatically once DNS points to the server.

Caddy with Docker?

Yes: image caddy:2, ports 80/443, volumes for Caddyfile and caddy_data (certificates).

Multiple apps behind Caddy?

One block per domain in the Caddyfile with reverse_proxy to localhost:PORT or container name.

SSL not issuing?

Check DNS A record, port 80 open (HTTP-01), nothing else binding 80/443.

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