Untitled

Choose OutputCache policy based on query string
/controller/action/id?revision=123

[OutputCache(Duration=10,Location=OutputCacheLocation.Server)]
public Action(string id)
{
    long lastRevision = GetLastRevision(id);
    return RedirectToAction("Action",
        new { Id = id, revision = lastRevision });
}

[OutputCache(Duration=int.MaxValue,Location=OutputCacheLocation.Server)]
public Action(string id, long revision)
{
   // ...
}

public class RevisionMethodSelectorAttribute : ActionMethodSelectorAttribute
{
    public override bool IsValidForRequest(ControllerContext controllerContext, MethodInfo methodInfo)
    {
        var revision = controllerContext.Controller.ValueProvider.GetValue("revision");
        var hasRevisionParam = methodInfo.GetParameters().Any(p => string.Equals("revision", p.Name, StringComparison.OrdinalIgnoreCase));
        if (revision != null && !string.IsNullOrEmpty(revision.AttemptedValue) && hasRevisionParam)
        {
            return true;
        }

        if ((revision == null || string.IsNullOrEmpty(revision.AttemptedValue)) && !hasRevisionParam)
        {
            return true;
        }

        return false;
    }
}

[RevisionMethodSelector]
public ActionResult MyAction(string id)
{
    long lastRevision = GetLastRevision(id);
    return RedirectToAction("MyAction", new { id = id, revision = lastRevision });
}

[RevisionMethodSelector]
[OutputCache(Duration = int.MaxValue, Location = OutputCacheLocation.Server, VaryByParam = "revision")]
public ActionResult MyAction(string id, long revision)
{
    ...
}