𝗖𝗮𝗱𝗱𝘆 𝘃𝘀 𝗡𝗴𝗶𝗻𝘅: 𝗪𝗵𝗲𝗻 𝘁𝗼 𝘀𝘄𝗶𝘁𝗰𝗵

You know how to run Nginx. You wrote the server block. You set up Certbot. It works.

The question for 2026 is not which server is better. The question is whether Caddy saves you enough time to justify the switch.

We tested both servers as a front door for Go and Node services. Here is what we found.

The real difference is certificate management, not speed.

Stick with Nginx if:

  • You serve high volumes of static files.
  • Your current Certbot setup works fine.
  • You want the lowest possible memory footprint.

Switch to Caddy if:

  • You create new subdomains often.
  • You run a homelab.
  • You hate checking for expired certificates.

How they handle TLS:

Nginx does not manage certificates. You must add Certbot to handle them. Certbot gets a certificate, saves it to a file, and sets a timer to renew it. If that timer breaks, your site shows a browser warning.

Caddy treats TLS as part of the server. You point it at a domain. Caddy handles the rest. It gets the certificate, serves it, and renews it automatically. It starts renewal early so you never face an expiry issue.

The configuration difference:

An Nginx config requires multiple blocks for port 80 and 443. You must define certificate paths and proxy headers manually.

A Caddyfile looks like this:

example.com { reverse_proxy localhost:8080 }

That is it. Caddy handles the certificate, redirects HTTP to HTTPS, and enables HTTP/2 automatically.

What about performance?

Nginx is written in C. It is faster for serving huge amounts of static files. Caddy is written in Go. It uses more memory, but you will only notice this on very small servers.

For most developers, the proxy is not the bottleneck. Your application and your database determine your speed. We saw no meaningful difference in latency for dynamic workloads.

The Verdict:

Use Caddy to avoid 2 AM certificate errors. It is the best choice for new projects.

Stay on Nginx if it is not broken. If you have a massive static site, Nginx remains the king of throughput.

Source: https://dev.to/pickuma/caddy-vs-nginx-in-2026-when-automatic-https-is-worth-the-switch-5a91