Caching Asp .Net Web Api

Question

I am trying to catch an method in the api that I am implementing. I have created an attribute that is based in this article(http://www.codeproject.com/Articles/682296/Setting-Cache-Control-HTTP-Headers-in-Web-API-Cont).

[Route("")]
[CacheControl(MaxAge = 160)]
public IEnumerable<Club> GetAll()
{
    return _clubService.GetAll();
}

The code of this attribute is:

public class CacheControlAttribute : ActionFilterAttribute
{
    public int MaxAge { get; set; }

    public CacheControlAttribute()
    {
        MaxAge = 160;
    }

    public override void OnActionExecuted(HttpActionExecutedContext context)
    {
        context.Response.Headers.CacheControl = new CacheControlHeaderValue
        {
            Public = true,
            MaxAge = TimeSpan.FromSeconds(MaxAge)
        }; 

        base.OnActionExecuted(context);
    }
}

I am calling directly this method from chrome. But the server is always executing the query and I canot get the server to return Not Modified. I am doing something wrong?

---------------------------------------------------------------EDIT-------------------------------------------------------------- These are the header of my call:

enter image description here

Have you inspected the headers to see what Web Api is returning? — DavidG
– DavidG, Commented Jul 18, 2014 at 8:50
I'm note sure output caching in the Web API is as simple as setting the header, someone has already went to the liberty of making a library that supports it. — James
– James, Commented Jul 18, 2014 at 8:58
@jvrdelafuente Your browser is sending cache-control: max-age=0 which is effectively telling the server My data is stale, give me new stuff — DavidG
– DavidG, Commented Jul 18, 2014 at 9:00
The library linked by @James looks pretty feature complete, I'd give that a go first. — DavidG
– DavidG, Commented Jul 18, 2014 at 9:06

James · Accepted Answer · 2014-07-18 09:33:42Z

1

Output caching is not currently supported by the Web API, however, someone has already gone to the trouble of building a library that does exactly what you need - AspNetWebApi-OutputCache.

answered Jul 18, 2014 at 9:33

James

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