✨ Add VaryByQueryKeys usage for ResponseCaching.

Author: catcherwong

sample/EasyCaching.Demo.ResponseCaching/Controllers/HomeController.cs

@@ -1,8 +1,8 @@
 namespace EasyCaching.Demo.ResponseCaching.Controllers
 {
     using Microsoft.AspNetCore.Mvc;
-    using System;
-    
+    using System;
+
     public class HomeController : Controller
     {
         [ResponseCache(Duration = 20)]
@@ -21,5 +21,13 @@ public IActionResult About()
                 LastUpdated = DateTimeOffset.UtcNow.ToString()
             });
         }
+
+        //not cached by query
+        //[ResponseCache(Duration = 20)]
+        [ResponseCache(Duration = 30, VaryByQueryKeys = new string[] { "page" })]
+        public IActionResult List(int page = 0)
+        {
+            return Content(page.ToString());
+        }
     }
 }