In simple English
Your web server gets slow when many people visit it at once. This tool saves copies of your pages and hands them out instantly. It plugs directly into popular servers like Caddy, Traefik, Nginx and Apache. You do not need to rewrite your application code to use it. It follows web standards so you will not get weird caching bugs.
What it is
Souin is a modular HTTP cache system written in Go that can run as a standalone server, a reverse-proxy, or a plugin inside existing web servers. It supports standard caching rules, fragmented page rendering, and distributed storage for larger deployments.
What it is good for
Solo builders want to make their web applications load faster and handle traffic spikes without paying for a larger server. This tool removes the need to build custom caching logic into your app.
- Plugs directly into the tools you already use, like Caddy and Traefik.
- Follows official web cache standards so pages update correctly.
- Supports multiple storage backends including in-memory and Redis for scaling.
- Configuration files require careful reading because there are many options.
- Recent versions removed built-in storage plugins, so you must compile them yourself.
- Debugging cache miss issues can take time on complex setups.
manual caching logic or a separate Varnish server
Caddy (a web server with automatic HTTPS and modular extensions)
- nginx/nginx32k stars
Nginx has built-in caching features, but Souin offers more modern plugin integrations and distributed storage options.
- caprover/caprover15k stars
A web page that installs apps and databases onto one rented computer, and sorts out the addresses and certificates.
- google/slo-generator564 stars
Turns a written reliability target into a measured number and a remaining budget.
- vectordotdev/vector23k stars
One collector that gathers logs and numbers from machines and sends them to one or more monitoring services.
docker run -d -p 80:80 darkweak/souin