How do I turn off caching for my entire ASP.NET MVC 3 website?

Like the question says, I wanted to know if it's possible to turn off caching on all controllers and actions for my entire site. Thanks!

Create a Global Action Filter and override OnResultExecuting():

public class DisableCache : ActionFilterAttribute
{
    public override void OnResultExecuting(ResultExecutingContext filterContext)
    {
        filterContext.HttpContext.Response.Cache.SetExpires(DateTime.UtcNow.AddDays(-1));
        filterContext.HttpContext.Response.Cache.SetValidUntilExpires(false);
        filterContext.HttpContext.Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);
        filterContext.HttpContext.Response.Cache.SetCacheability(HttpCacheability.NoCache);
        filterContext.HttpContext.Response.Cache.SetNoStore();
    }
}

And then register this in your global.asax, like so:

    public static void RegisterGlobalFilters(GlobalFilterCollection filters)
    {
        filters.Add(new DisableCache());
    }

In summation, what this does is create a Global Action Filter so that implicitly this will be applied to all Controllers and all Actions.