Output caching for an ApiController (MVC4 Web API)

Question

I\'m trying to cache the output of an ApiController method in Web API.

Here\'s the controller code:

public class TestController : ApiController
{
            


        

Answer 1

I am very late, but still thought to post this great article on Caching in WebApi

https://codewala.net/2015/05/25/outputcache-doesnt-work-with-web-api-why-a-solution/

public class CacheWebApiAttribute : ActionFilterAttribute
{
    public int Duration { get; set; }

    public override void OnActionExecuted(HttpActionExecutedContext filterContext)
    {
        filterContext.Response.Headers.CacheControl = new CacheControlHeaderValue()
        {
            MaxAge = TimeSpan.FromMinutes(Duration),
            MustRevalidate = true,
            Private = true
        };
    }
}

In the above code, we have overridden OnActionExecuted method and set the required header in the response. Now I have decorated the Web API call as

[CacheWebApi(Duration = 20)]
        public IEnumerable Get()
        {
            return new string[] { DateTime.Now.ToLongTimeString(), DateTime.UtcNow.ToLongTimeString() };
        }