A demo app to show off how certain HTTP headers change caching behaviors.

First, this app depends on having Squid running on the same machine as this app will be run and the executable squidclient available on your $PATH. Setting up Squid is outside the scope of this README — but it’s available with brew install squid if you’re one of those kinds.

After fetching this repository:

npm install
node index.js

The application prints out its port binding when starting, but unless you’ve set the PORT environmental variable, it’s running at http://localhost:3000/.

The app lets you specify response headers (in normal Header: value format) that will be sent through Squid and back to the app. Feel free to mess around with things like Cache-Control and see how they make Squid respond (be sure to look at the X-Cache response header).

It should be pretty straightforward once you get to this point.