REST Response > Remove/override caching headers

[nickg111]

Hi all,

Version: Geneva

I want to be able to cache a REST response for 5 minutes... I've tried using setHeaders(..) (there's no removeHeaders(..)), but it looks as though ServiceNow has hardcoded the `Cache-Control`, `Pragma` and `Expires` HTTP headers in the response. Is there anyway to remove `Pragma` and `Expires`, and replace `Cache-Control` with a new value?

i.e.

I am currently setting headers like so:

response.setHeaders({

      "Access-Control-Allow-Origin": "*",

      "Access-Control-Allow-Methods": "POST, GET, OPTIONS, DELETE",

      "Access-Control-Allow-Headers": "Origin, X-Requested-With, Content-Type, Accept, Authorization",

      "Cache-Control": "max-age=300",

      "Pragma": null,

      "Expires": null

});

However, I (still) get the following headers in the response:

Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept, Authorization

Access-Control-Allow-Methods: POST, GET, OPTIONS, DELETE

Access-Control-Allow-Origin: *

Cache-control: no-cache,no-store,must-revalidate,max-age=-1

Content-Encoding: gzip

Content-Type: application/json;charset=UTF-8

Date: Mon, 10 Jul 2017 01:18:40 GMT

Expires: 0

Pragma: no-store,no-cache

Server: ServiceNow

Strict-Transport-Security: max-age=63072000; includeSubDomains

Transfer-Encoding: chunked

Fyi, kiki330611, ben_amiot, arthurcheung

[kiki330611]

I have exactly the same question!! Hope someone knows the answer!

[arthurcheung]

Not on those exact same properties, but we've had similar (unresolved) issues with other properties on the header in the past. Would be interested to see the solution.