Update email and formating.

WebCms/Controllers/QueueController.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Collections.Specialized;
 using System.Linq;
+using System.Web;
+using System.Web.Caching;
 using System.Web.Mvc;
 using Hangfire;
 using LeafWeb.Core.Entities;
@@ -15,6 +17,8 @@ namespace LeafWeb.WebCms.Controllers
 	[MemberAuthorize]
 	public class QueueController : BaseController
 	{
+		private const int TimeSamples = 40;
+
 		public ActionResult Index(string query)
 		{
 			var resultItems =
@@ -34,9 +38,7 @@ namespace LeafWeb.WebCms.Controllers
 				}
 			}
 
-			// completed leaf input for computing runtime statistics
-			var completedLeafInput = DataService.GetLeafInputRecentlyCompleted(100);
-			var timeInProgressEstimater = new TimeInProgressEstimater(completedLeafInput);
+			var timeInProgressEstimater = TimeInProgressEstimater();
 
 			var serviceDescription = ServiceDescription();
 			
@@ -49,10 +51,24 @@ namespace LeafWeb.WebCms.Controllers
 			return View(queueViewModel);
 		}
 
+		private TimeInProgressEstimater TimeInProgressEstimater()
+		{
+			var estimater = HttpRuntime.Cache["TimeInProgressEstimater"];
+			if (estimater == null)
+			{
+				// completed leaf input for computing runtime statistics
+				var completedLeafInput = DataService.GetLeafInputRecentlyCompleted(TimeSamples);
+				estimater = new TimeInProgressEstimater(completedLeafInput);
+				HttpRuntime.Cache.Insert("TimeInProgressEstimater", estimater, null, DateTime.Now.AddHours(12), Cache.NoSlidingExpiration);
+			}
+
+			return (TimeInProgressEstimater)estimater;
+		}
+
 		public ActionResult LeafInputStatistics()
 		{
 			var data =
-				from li in DataService.GetLeafInputRecentlyCompleted(100)
+				from li in DataService.GetLeafInputRecentlyCompleted(TimeSamples)
 				select $"{li.InputFiles.Count}, {li.TimeInProgress.TotalSeconds}";
 			return Content(string.Join("<br />", data));
 		}