diff --git a/Plugins/Wox.Plugin.Program/Main.cs b/Plugins/Wox.Plugin.Program/Main.cs
index 876f571bc8..86431be80a 100644
--- a/Plugins/Wox.Plugin.Program/Main.cs
+++ b/Plugins/Wox.Plugin.Program/Main.cs
@@ -16,13 +16,13 @@ namespace Wox.Plugin.Program
     public class Main : ISettingProvider, IPlugin, IPluginI18n, IContextMenu, ISavable
     {
         private static readonly object IndexLock = new object();
-        private static Win32[] _win32s = { };
-        private static UWP.Application[] _uwps = { };
+        private static Win32[] _win32s;
+        private static UWP.Application[] _uwps;
 
         private static PluginInitContext _context;
 
-        private static ProgramIndexCache _cache;
-        private static BinaryStorage<ProgramIndexCache> _cacheStorage;
+        private static BinaryStorage<Win32[]> _win32Storage;
+        private static BinaryStorage<UWP.Application[]> _uwpStorage;
         private static Settings _settings;
         private readonly PluginJsonStorage<Settings> _settingsStorage;
 
@@ -33,13 +33,10 @@ namespace Wox.Plugin.Program
 
             Stopwatch.Normal("Preload programs", () =>
             {
-                _cacheStorage = new BinaryStorage<ProgramIndexCache>();
-                _cache = _cacheStorage.Load();
-
-                var w = _cache.Win32s;
-                _win32s = w ?? new Win32[] {};
-                var u = _cache.UWPs;
-                _uwps = u ?? new UWP.Application[] { };
+                _win32Storage = new BinaryStorage<Win32[]>("Win32Cache");
+                _win32s = _win32Storage.TryLoad(new Win32[] { });
+                _uwpStorage = new BinaryStorage<UWP.Application[]>("UWPCache");
+                _uwps = _uwpStorage.TryLoad(new UWP.Application[] { });
 
             });
             Log.Info($"Preload {_win32s.Length} win32 programs from cache");
@@ -53,9 +50,8 @@ namespace Wox.Plugin.Program
         public void Save()
         {
             _settingsStorage.Save();
-            _cache.Win32s = _win32s;
-            _cache.UWPs = _uwps;
-            _cacheStorage.Save();
+            _win32Storage.Save(_win32s);
+            _uwpStorage.Save(_uwps);
         }
 
         public List<Result> Query(Query query)
@@ -76,8 +72,8 @@ namespace Wox.Plugin.Program
 
         public static void IndexPrograms()
         {
-            Win32[] w = {} ;
-            UWP.Application[] u = {};
+            Win32[] w = { };
+            UWP.Application[] u = { };
             var t1 = Task.Run(() =>
             {
                 w = Win32.All(_settings);
diff --git a/Plugins/Wox.Plugin.Program/ProgramIndexCache.cs b/Plugins/Wox.Plugin.Program/ProgramIndexCache.cs
deleted file mode 100644
index b1c7783c2d..0000000000
--- a/Plugins/Wox.Plugin.Program/ProgramIndexCache.cs
+++ /dev/null
@@ -1,13 +0,0 @@
-using System;
-using System.Collections.Generic;
-using Wox.Plugin.Program.Programs;
-
-namespace Wox.Plugin.Program
-{
-    [Serializable]
-    public class ProgramIndexCache
-    {
-        public Win32[] Win32s = { };
-        public UWP.Application[] UWPs = { };
-    }
-}
\ No newline at end of file
diff --git a/Plugins/Wox.Plugin.Program/Wox.Plugin.Program.csproj b/Plugins/Wox.Plugin.Program/Wox.Plugin.Program.csproj
index 690940b247..e6ba6f5c50 100644
--- a/Plugins/Wox.Plugin.Program/Wox.Plugin.Program.csproj
+++ b/Plugins/Wox.Plugin.Program/Wox.Plugin.Program.csproj
@@ -76,7 +76,6 @@
     <Compile Include="Programs\UWP.cs" />
     <Compile Include="Programs\Win32.cs" />
     <Compile Include="SuffixesConverter.cs" />
-    <Compile Include="ProgramIndexCache.cs" />
     <Compile Include="Main.cs" />
     <Compile Include="ProgramSetting.xaml.cs">
       <DependentUpon>ProgramSetting.xaml</DependentUpon>
diff --git a/Wox.Infrastructure/Image/ImageCache.cs b/Wox.Infrastructure/Image/ImageCache.cs
index c5888a82ce..a0fac88cca 100644
--- a/Wox.Infrastructure/Image/ImageCache.cs
+++ b/Wox.Infrastructure/Image/ImageCache.cs
@@ -1,6 +1,8 @@
 using System;
 using System.Collections.Concurrent;
+using System.Collections.Generic;
 using System.Linq;
+using System.Windows.Media;
 
 namespace Wox.Infrastructure.Image
 {
@@ -8,29 +10,35 @@ namespace Wox.Infrastructure.Image
     public class ImageCache
     {
         private const int MaxCached = 200;
-        public ConcurrentDictionary<string, int> TopUsedImages = new ConcurrentDictionary<string, int>();
+        public ConcurrentDictionary<string, int> Usage = new ConcurrentDictionary<string, int>();
+        private readonly ConcurrentDictionary<string, ImageSource> _data = new ConcurrentDictionary<string, ImageSource>();
 
-        public void Add(string path)
+
+        public ImageSource this[string path]
         {
-            if (TopUsedImages.ContainsKey(path))
+            get
             {
-                TopUsedImages[path] = TopUsedImages[path] + 1;
-            }
-            else
-            {
-                TopUsedImages[path] = 1;
+                Usage.AddOrUpdate(path, 1, (k, v) => v + 1);
+                var i = _data[path];
+                return i;
             }
+            set { _data[path] = value; }
         }
 
         public void Cleanup()
         {
-            if (TopUsedImages.Count > MaxCached)
-            {
-                var images = TopUsedImages.OrderByDescending(o => o.Value)
-                                          .Take(MaxCached)
-                                          .ToDictionary(i => i.Key, i => i.Value);
-                TopUsedImages = new ConcurrentDictionary<string, int>(images);
-            }
+            var images = Usage
+                .OrderByDescending(o => o.Value)
+                .Take(MaxCached)
+                .ToDictionary(i => i.Key, i => i.Value);
+            Usage = new ConcurrentDictionary<string, int>(images);
+        }
+
+        public bool ContainsKey(string key)
+        {
+            var contains = _data.ContainsKey(key);
+            return contains;
         }
     }
+
 }
diff --git a/Wox.Infrastructure/Image/ImageLoader.cs b/Wox.Infrastructure/Image/ImageLoader.cs
index 2a827acdd1..aa74769b16 100644
--- a/Wox.Infrastructure/Image/ImageLoader.cs
+++ b/Wox.Infrastructure/Image/ImageLoader.cs
@@ -15,7 +15,8 @@ namespace Wox.Infrastructure.Image
 {
     public static class ImageLoader
     {
-        private static readonly ConcurrentDictionary<string, ImageSource> ImageSources = new ConcurrentDictionary<string, ImageSource>();
+        private static readonly ImageCache ImageCache = new ImageCache();
+        private static readonly BinaryStorage<ConcurrentDictionary<string, int>> Storage;
 
 
         private static readonly string[] ImageExtions =
@@ -29,19 +30,17 @@ namespace Wox.Infrastructure.Image
             ".ico"
         };
 
-        private static readonly ImageCache _cache;
-        private static readonly BinaryStorage<ImageCache> _storage;
 
         static ImageLoader()
         {
-            _storage = new BinaryStorage<ImageCache>();
-            _cache = _storage.Load();
+            Storage = new BinaryStorage<ConcurrentDictionary<string, int>> ("ImageCache");
+            ImageCache.Usage = Storage.TryLoad(new ConcurrentDictionary<string, int>());
         }
 
         public static void Save()
         {
-            _cache.Cleanup();
-            _storage.Save();
+            ImageCache.Cleanup();
+            Storage.Save(ImageCache.Usage);
         }
 
         private static ImageSource ShellIcon(string fileName)
@@ -78,7 +77,7 @@ namespace Wox.Infrastructure.Image
             catch (System.Exception e)
             {
                 Log.Exception(e);
-                return ImageSources[Constant.ErrorIcon];
+                return ImageCache[Constant.ErrorIcon];
             }
         }
 
@@ -88,22 +87,22 @@ namespace Wox.Infrastructure.Image
             {
                 ImageSource img = new BitmapImage(new Uri(icon));
                 img.Freeze();
-                ImageSources[icon] = img;
+                ImageCache[icon] = img;
             }
             Task.Run(() =>
             {
                 Stopwatch.Normal("Preload images from cache", () =>
                 {
-                    _cache.TopUsedImages.AsParallel().Where(i => !ImageSources.ContainsKey(i.Key)).ForAll(i =>
+                    ImageCache.Usage.AsParallel().Where(i => !ImageCache.ContainsKey(i.Key)).ForAll(i =>
                     {
                         var img = Load(i.Key);
                         if (img != null)
                         {
-                            ImageSources[i.Key] = img;
+                            ImageCache[i.Key] = img;
                         }
                     });
                 });
-                Log.Info($"Preload {_cache.TopUsedImages.Count} images from cache");
+                Log.Info($"Preload {ImageCache.Usage.Count} images from cache");
             });
         }
 
@@ -112,13 +111,11 @@ namespace Wox.Infrastructure.Image
             ImageSource image;
             if (string.IsNullOrEmpty(path))
             {
-                image = ImageSources[Constant.ErrorIcon];
-                _cache.Add(Constant.ErrorIcon);
+                image = ImageCache[Constant.ErrorIcon];
             }
-            else if (ImageSources.ContainsKey(path))
+            else if (ImageCache.ContainsKey(path))
             {
-                image = ImageSources[path];
-                _cache.Add(path);
+                image = ImageCache[path];
             }
             else
             {
@@ -146,7 +143,7 @@ namespace Wox.Infrastructure.Image
                     }
                     else
                     {
-                        image = ImageSources[Constant.ErrorIcon];
+                        image = ImageCache[Constant.ErrorIcon];
                         path = Constant.ErrorIcon;
                     }
                 }
@@ -159,12 +156,11 @@ namespace Wox.Infrastructure.Image
                     }
                     else
                     {
-                        image = ImageSources[Constant.ErrorIcon];
+                        image = ImageCache[Constant.ErrorIcon];
                         path = Constant.ErrorIcon;
                     }
                 }
-                ImageSources[path] = image;
-                _cache.Add(path);
+                ImageCache[path] = image;
                 image.Freeze();
             }
             return image;
diff --git a/Wox.Infrastructure/Storage/BinaryStorage.cs b/Wox.Infrastructure/Storage/BinaryStorage.cs
index f18df92c5b..cca3d7fe1d 100644
--- a/Wox.Infrastructure/Storage/BinaryStorage.cs
+++ b/Wox.Infrastructure/Storage/BinaryStorage.cs
@@ -13,19 +13,20 @@ namespace Wox.Infrastructure.Storage
     /// Normally, it has better performance, but not readable
     /// You MUST mark implement class as Serializable
     /// </summary>
-    public class BinaryStorage<T> : Storage<T> where T : new()
+    public class BinaryStorage<T> : Storage<T>
     {
-        public BinaryStorage()
+        public BinaryStorage(string filename)
         {
-            FileSuffix = ".dat";
+            FileSuffix = ".cache";
             DirectoryName = "Cache";
             DirectoryPath = Path.Combine(DirectoryPath, DirectoryName);
+            FileName = filename;
             FilePath = Path.Combine(DirectoryPath, FileName + FileSuffix);
 
             ValidateDirectory();
         }
 
-        public override T Load()
+        public T TryLoad(T defaultData)
         {
             if (File.Exists(FilePath))
             {
@@ -33,23 +34,25 @@ namespace Wox.Infrastructure.Storage
                 {
                     if (stream.Length > 0)
                     {
-                        Deserialize(stream);
+                        var d = Deserialize(stream, defaultData);
+                        return d;
                     }
                     else
                     {
                         stream.Close();
-                        LoadDefault();
+                        Save(defaultData);
+                        return defaultData;
                     }
                 }
             }
             else
             {
-                LoadDefault();
+                Save(defaultData);
+                return defaultData;
             }
-            return Data;
         }
 
-        private void Deserialize(FileStream stream)
+        private T Deserialize(FileStream stream, T defaultData)
         {
             //http://stackoverflow.com/questions/2120055/binaryformatter-deserialize-gives-serializationexception
             AppDomain.CurrentDomain.AssemblyResolve += CurrentDomain_AssemblyResolve;
@@ -60,14 +63,15 @@ namespace Wox.Infrastructure.Storage
 
             try
             {
-                Data = (T) binaryFormatter.Deserialize(stream);
+                var t = (T) binaryFormatter.Deserialize(stream);
+                return t;
             }
             catch (System.Exception e)
             {
                 Log.Error($"Broken cache file: {FilePath}");
                 Log.Exception(e);
                 stream.Close();
-                LoadDefault();
+                return defaultData;
             }
             finally
             {
@@ -75,12 +79,6 @@ namespace Wox.Infrastructure.Storage
             }
         }
 
-        public override void LoadDefault()
-        {
-            Data = new T();
-            Save();
-        }
-
         private Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
         {
             Assembly ayResult = null;
@@ -97,7 +95,7 @@ namespace Wox.Infrastructure.Storage
             return ayResult;
         }
 
-        public override void Save()
+        public void Save(T data)
         {
             using (var stream = new FileStream(FilePath, FileMode.Create))
             {
@@ -108,7 +106,7 @@ namespace Wox.Infrastructure.Storage
 
                 try
                 {
-                    binaryFormatter.Serialize(stream, Data);
+                    binaryFormatter.Serialize(stream, data);
                 }
                 catch (SerializationException e)
                 {
diff --git a/Wox.Infrastructure/Storage/Storage.cs b/Wox.Infrastructure/Storage/Storage.cs
index 127f8b852f..0b8302d251 100644
--- a/Wox.Infrastructure/Storage/Storage.cs
+++ b/Wox.Infrastructure/Storage/Storage.cs
@@ -7,7 +7,7 @@ namespace Wox.Infrastructure.Storage
     {
         protected T Data;
         protected Type DataType { get; }
-        public string FileName { get; }
+        public string FileName { get; set; }
         public string FilePath { get; set; }
         public string FileSuffix { get; set; }
         public string DirectoryPath { get; set; }