Cache Control Headers

Simulate origin server responses with configurable cache-control and HTTP headers.

/utilities/cache-control-headers/

📋 Description

Accepts query string parameters and returns a response with those parameters set as HTTP headers. Without parameters, redirects to this documentation page.

🔧 Supported Parameters

  • status
    HTTP response status code (200-499, defaults to 200)
  • surrogate-control
    Surrogate-Control header value
  • cache-control
    Cache-Control header (supports multiple directives)
  • Expires
    Expires header (must be "0" or valid HTTP date format)
  • set-cookie
    Set-Cookie header (can be specified multiple times)
  • Location
    Location header

💡 Examples

Multiple cache-control directives:
/utilities/cache-control-headers/?cache-control=no-store,%20max-age=0
Surrogate-control:
/utilities/cache-control-headers/?surrogate-control=max-age=3600
Multiple cookies:
/utilities/cache-control-headers/?set-cookie=session=abc&set-cookie=user=john
Combined parameters:
/utilities/cache-control-headers/?cache-control=max-age=7200&surrogate-control=max-age=3600

📄 Response Format

{
  "message": "Cache control headers test endpoint",
  "status": 200,
  "headers_set": {
    "Cache-Control": "max-age=3600",
    "Surrogate-Control": "max-age=7200"
  }
}

Important Notes

  • Without query parameters, redirects (302) to this page
  • Status accepts 200-499 (defaults to 200)
  • Invalid status codes return 400 Bad Request
  • Expires must be "0" or valid HTTP date format
  • Multiple set-cookie parameters supported

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