Caddy vs Cosmos Cloud: Proxy Approaches Compared
Source: Dev.to
Quick Verdict
Different tools for different philosophies. Caddy is a dedicated reverse proxy with automatic HTTPS and the simplest config syntax available. Cosmos Cloud is an all‑in‑one self‑hosting platform that bundles a reverse proxy with container management, an app store, and security features.
- Choose Caddy if you want the best proxy.
- Choose Cosmos Cloud if you want one tool for everything.
Caddy is a modern web server and reverse proxy with automatic HTTPS, a minimal Caddyfile syntax, and a plugin ecosystem. Current version: 2.10.2.
Cosmos Cloud is a self‑hosting platform that combines Docker management, a built‑in reverse proxy with SSL, an app marketplace, VPN connectivity, user authentication, and basic DDoS protection. Current version: v0.20.2.
Feature Comparison
| Feature | Caddy 2.10 | Cosmos Cloud v0.20 |
|---|---|---|
| Reverse proxy | Yes (dedicated) | Yes (built‑in) |
| Automatic HTTPS | Yes (zero config) | Yes |
| Config format | Caddyfile (text) | Web UI |
| Container management | No | Yes |
| App marketplace | No | Yes |
| User management | No | Yes (multi‑user, 2FA) |
| VPN integration | No | Yes (Constellation) |
| DDoS protection | No | Yes (Smart Shield) |
| Static file serving | Yes | No |
| Plugin ecosystem | Yes (xcaddy) | No |
| HTTP/3 | Experimental | No |
| Load balancing | Yes | Basic |
| Health checks | Yes | Basic |
| JSON API | Yes (hot reload) | No |
| RAM usage | ~30‑50 MB | ~150‑200 MB |
When to Choose Caddy
- You already use Portainer, Dockge, or another container‑management tool.
- You want to keep your proxy separate from container management.
- You need advanced proxy features (load balancing, health checks, plugins).
- You prefer config‑as‑code in version control.
- You need a lightweight solution.
When to Choose Cosmos Cloud
- You want one tool for proxy + management + security.
- You’re starting from scratch and want the simplest overall setup.
- You want an app marketplace for one‑click deployments.
- You need built‑in VPN and DDoS protection.
- You don’t need advanced proxy features.
Recommendations
- Best dedicated reverse proxy: Use Caddy. Pair it with Portainer or Dockge for container management. This modular approach gives you the best tool for each job.
- All‑in‑one simplicity: Use Cosmos Cloud. It simplifies your stack at the cost of some proxy flexibility; its built‑in proxy covers most self‑hosting needs.
For basic proxying and SSL, the two are comparable. For advanced features (load‑balancing policies, health checks, Caddyfile plugins, JSON API), Caddy is significantly more capable.
Running both together is not straightforward because they would compete for ports 80 and 443. Disabling Cosmos Cloud’s built‑in proxy to use Caddy defeats the purpose of its integrated approach.
Resource usage: Caddy uses ~30‑50 MB for just the proxy, while Cosmos Cloud uses ~150‑200 MB for the full platform. The comparison isn’t fair—Cosmos Cloud does much more than proxying.
Further Reading
- How to Self‑Host Caddy with Docker
- How to Self‑Host Cosmos Cloud
- Traefik vs Caddy
- Portainer vs Cosmos Cloud
- Best Self‑Hosted Reverse Proxies
- Reverse Proxy Explained