Disable caching of Web API responses

Question

I want to disable browser caching of all the Web API responses across all the clients. Even though I can use libraries like CacheOutput or CacheCow as suggested in Scott Hanselman's blog but my requirement is not that complex. I just want to disable caching of all the Web API responses and do not need any custom control over it.

• How do I do that in ASP.NET Web API 2?

• Which headers do I need to set? 'Cache-Control' : 'no-cache'?

• Is ETag, Last-Modified, etc needed? Or maybe any other response headers??

• It need to be implemented in a DelegatingHandler, right?

Answer 1

Just use the Cache-Control: no-cache header.
Implement it as delegating-Handler and make sure your header is applied (with MS Owin Implementation hook up on OnSendingHeaders(). I'm using it here OnSendingHeaders() Example).