Caddy vs. nginx
Caddy vs. nginx vs. Traefik in 2026 · pick the reverse proxy
All three terminate TLS and forward traffic. The split is operating model: Caddy is opinionated single-binary with automatic HTTPS, nginx is the industrial workhorse, Traefik is Kubernetes / Docker-native with dynamic config from labels.
option ACaddyoption BnginxserviceCustom software · everything else
→ Verdict
Default Caddy for VMs, small to mid services, and any environment where 'just works' beats 'fully tunable'. Pick nginx when you need rock-solid behaviour at high concurrency, niche modules, or simply have a decade of nginx ops muscle. Pick Traefik when you live in Kubernetes or Docker Swarm and want routes from labels rather than reload-driven config. The wrong choice is putting nginx in a K8s cluster where Traefik / Gateway API would be one third the YAML.
Pick a topic
When to pick which
A · Pick this when…
Caddy
- 01VMs and bare-metal services with public TLS endpoints
- 02Small ops team that wants automatic HTTPS without scripting
- 03Static sites, Go / Node services, simple reverse-proxy needs
- 04You like a single binary plus a readable Caddyfile
- 05On-the-fly config via API matters more than legacy modules
B · Pick that when…
nginx
- 01High-concurrency front door with strict tuning needs
- 02You need lua, OpenResty, custom modules, or specific TLS knobs
- 03Existing nginx muscle, runbooks, configs you can lift and shift
- 04Strict governance · approve every config diff in PRs
- 05You are sitting in a CDN-fronted stack where nginx is the origin
Factors to weigh
Factor-by-factor
| Factors to weigh | Caddy | nginx |
|---|---|---|
| Configuration model | Caddyfile or JSON, dynamic via API | nginx.conf · text-driven, reload to apply |
| TLS automation | Built-in ACME, automatic certs, OCSP, key rotation | Bring your own (certbot, lego, custom) |
| K8s / Docker fit | OK · works in containers, not native to label-driven config | OK as ingress with Helm, but verbose |
| Traefik (third lane) | Caddy is simpler on VMs | Traefik wins in K8s / Swarm with label-driven dynamic routes |
| Performance ceiling | Excellent · within 5-10% of nginx in most workloads | Highest practical ceiling, especially on long-lived connections |
| Module ecosystem | Smaller but quality (xcaddy plug-ins) | Largest · lua, brotli, geoip, upstream balancers |
| Operational ergonomics | Strong · single binary, sensible defaults | Industrial · familiar, also fragile to misconfig |
| We recommend | VMs, small ops, automatic HTTPS first | High-concurrency origins, lua / OpenResty needs; Traefik for K8s |
Let's get started.
Send an email or book a 30-minute call.