Traefik Plugin Response Cache Control

This plugin allows you to set or override Cache-Control headers in HTTP responses.

Configuration

http:
  middlewares:
    response-cache-control:
      plugin:
        response-cache-control:
          value: "public, max-age=3600"
          override: true
          excludedStatusCodes: ["400-499", "500"]

Configuration Options

Option	Type	Default	Description
value	String	"public, max-age=3600"	The Cache-Control header value to be set
override	Boolean	true	Whether to override existing Cache-Control headers
excludedStatusCodes	[]String	[]	Status codes or ranges to exclude from Cache-Control header setting. Format can be single codes ("404") or ranges ("400-499")

Example Usage

Basic Usage with Default Values

http:
  middlewares:
    my-cache-control:
      plugin:
        response-cache-control: {}

Custom Cache Configuration

http:
  middlewares:
    static-cache:
      plugin:
        response-cache-control:
          value: "public, max-age=86400"
          override: true
          excludedStatusCodes: ["404", "500-599"]

Using with a Traefik Router

http:
  routers:
    my-router:
      rule: "Host(`example.com`)"
      middlewares:
        - "response-cache-control"
      service: "my-service"

Development Notes

When developing this plugin, please note that the package name must be traefik_plugin_response_cache_control to match the module path's last component. This is required for proper integration with Traefik's Yaegi interpreter.

// Correct package declaration
package traefik_plugin_response_cache_control