add DisableBrowserCacheFilter

zero/Mvc/DisableBrowserCacheFilter.cs

@@ -0,0 +1,33 @@
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc.Filters;
+using Microsoft.Net.Http.Headers;
+
+namespace zero.Mvc;
+
+/// <summary>
+/// Ensures that the request is not cached by the browser
+/// </summary>
+public class DisableBrowserCacheAttribute : ActionFilterAttribute
+{
+  public override void OnResultExecuting(ResultExecutingContext context)
+  {
+    base.OnResultExecuting(context);
+
+    var httpResponse = context.HttpContext.Response;
+
+    if (httpResponse.StatusCode != 200) return;
+
+    httpResponse.GetTypedHeaders().CacheControl =
+        new CacheControlHeaderValue()
+        {
+          NoCache = true,
+          MaxAge = TimeSpan.Zero,
+          MustRevalidate = true,
+          NoStore = true
+        };
+
+    httpResponse.Headers[HeaderNames.LastModified] = DateTime.Now.ToString("R"); // Format RFC1123
+    httpResponse.Headers[HeaderNames.Pragma] = "no-cache";
+    httpResponse.Headers[HeaderNames.Expires] = new DateTime(1990, 1, 1, 0, 0, 0).ToString("R");
+  }
+}