Caddy Has a Free Reverse Proxy That Gets HTTPS Certificates Automatically — Zero Config TLS

Caddy Gets HTTPS Certificates Automatically — Zero Config

Nginx needs certbot, cron jobs, and manual renewal. Caddy gets HTTPS certificates automatically from Let's Encrypt on first request. Zero config.

What Makes Caddy Special

Caddy is a production-ready web server written in Go:

• Automatic HTTPS — gets and renews TLS certificates automatically
• HTTP/3 — QUIC support out of the box
• Reverse proxy — load balancing, health checks, retries
• Single binary — no dependencies, runs anywhere
• Caddyfile — simple, readable configuration
• API-driven — configure everything via REST API

Caddyfile Examples

# Reverse proxy with auto-HTTPS
example.com {
  reverse_proxy localhost:3000
}

# Multiple services
api.example.com {
  reverse_proxy localhost:8080
}

app.example.com {
  reverse_proxy localhost:3000
}

# With load balancing
example.com {
  reverse_proxy localhost:3001 localhost:3002 localhost:3003 {
    lb_policy round_robin
    health_uri /health
    health_interval 10s
  }
}

# Static files + SPA
example.com {
  root * /srv/app
  try_files {path} /index.html
  file_server
  encode gzip zstd
}

Caddy vs Nginx

Feature	Caddy	Nginx
Auto HTTPS	✅ Built-in	❌ Needs certbot
Config syntax	Simple	Complex
HTTP/3	✅ Default	Experimental
Hot reload	✅ API	❌ Signal
Single binary	✅	❌
Memory usage	Higher	Lower

Quick Start

# Install
curl -fsSL https://caddyserver.com/api/download | sudo bash

# Or Docker
docker run -p 80:80 -p 443:443 \
  -v caddy_data:/data \
  -v ./Caddyfile:/etc/caddy/Caddyfile \
  caddy

# Serve current directory
caddy file-server --browse

# Reverse proxy in one command
caddy reverse-proxy --from example.com --to localhost:3000

Why Choose Caddy

1. HTTPS just works — no scripts, no cron, no expiry panic
2. Simple config — Caddyfile is readable by humans
3. API config — change routing without restart
4. Extensible — plugins for auth, rate limiting, etc.
5. Modern defaults — HTTP/3, HSTS, OCSP stapling automatic

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Need help with web server architecture? I help teams migrate from Nginx to Caddy with zero-downtime HTTPS.

📧 [e-mail] — Infrastructure consulting

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