Fixed timing issues

fixes #4487

src/Marr.Data/Reflection/SimpleReflectionStrategy.cs

@@ -1,5 +1,5 @@
 using System;
-using System.Collections.Generic;
+using System.Collections.Concurrent;
 using System.Linq.Expressions;
 using System.Reflection;
 
@@ -7,11 +7,9 @@ namespace Marr.Data.Reflection
 {
     public class SimpleReflectionStrategy : IReflectionStrategy
     {
-
-        private static readonly Dictionary<string, MemberInfo> MemberCache = new Dictionary<string, MemberInfo>();
-        private static readonly Dictionary<string, GetterDelegate> GetterCache = new Dictionary<string, GetterDelegate>();
-        private static readonly Dictionary<string, SetterDelegate> SetterCache = new Dictionary<string, SetterDelegate>();
-
+        private static readonly ConcurrentDictionary<string, MemberInfo> MemberCache = new ConcurrentDictionary<string, MemberInfo>();
+        private static readonly ConcurrentDictionary<string, GetterDelegate> GetterCache = new ConcurrentDictionary<string, GetterDelegate>();
+        private static readonly ConcurrentDictionary<string, SetterDelegate> SetterCache = new ConcurrentDictionary<string, SetterDelegate>();
 
         private static MemberInfo GetMember(Type entityType, string name)
         {

src/NzbDrone.Core/Tv/SeriesScannedHandler.cs

@@ -31,20 +31,22 @@ namespace NzbDrone.Core.Tv
 
         private void HandleScanEvents(Series series)
         {
-            if (series.AddOptions == null)
+            var addOptions = series.AddOptions;
+
+            if (addOptions == null)
             {
                 _episodeAddedService.SearchForRecentlyAdded(series.Id);
                 return;
             }
 
             _logger.Info("[{0}] was recently added, performing post-add actions", series.Title);
-            _episodeMonitoredService.SetEpisodeMonitoredStatus(series, series.AddOptions);
+            _episodeMonitoredService.SetEpisodeMonitoredStatus(series, addOptions);
 
             // If both options are enabled search for the whole series, which will only include monitored episodes.
             // This way multiple searches for the same season are skipped, though a season that can't be upgraded may be
             // searched, but the logs will be more explicit.
 
-            if (series.AddOptions.SearchForMissingEpisodes && series.AddOptions.SearchForCutoffUnmetEpisodes)
+            if (addOptions.SearchForMissingEpisodes && addOptions.SearchForCutoffUnmetEpisodes)
             {
                 _commandQueueManager.Push(new SeriesSearchCommand(series.Id));
             }