diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..124c550
Binary files /dev/null and b/.DS_Store differ
diff --git a/DevTrends.MvcDonutCaching/.DS_Store b/DevTrends.MvcDonutCaching/.DS_Store
new file mode 100644
index 0000000..c750250
Binary files /dev/null and b/DevTrends.MvcDonutCaching/.DS_Store differ
diff --git a/DevTrends.MvcDonutCaching/KeyBuilder.cs b/DevTrends.MvcDonutCaching/KeyBuilder.cs
index b778d32..fd8e6e0 100644
--- a/DevTrends.MvcDonutCaching/KeyBuilder.cs
+++ b/DevTrends.MvcDonutCaching/KeyBuilder.cs
@@ -6,19 +6,8 @@ namespace DevTrends.MvcDonutCaching
 {
     public class KeyBuilder : IKeyBuilder
     {
-        private string _cacheKeyPrefix = "_d0nutc@che.";
 
-        public string CacheKeyPrefix
-        {
-            get
-            {
-                return _cacheKeyPrefix;
-            }
-            set
-            {
-                _cacheKeyPrefix = value;
-            }
-        }
+        public string CacheKeyPrefix = "_d0nutc@che." + System.DateTime.Now.ToString("yyyyMMdd");
 
         public string BuildKey(string controllerName)
         {
diff --git a/DevTrends.MvcDonutCaching/MvcDonutCaching.csproj b/DevTrends.MvcDonutCaching/MvcDonutCaching.csproj
index 6ded1eb..0b3e7d8 100644
--- a/DevTrends.MvcDonutCaching/MvcDonutCaching.csproj
+++ b/DevTrends.MvcDonutCaching/MvcDonutCaching.csproj
@@ -23,6 +23,7 @@
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
@@ -31,8 +32,10 @@
     <DefineConstants>TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release.Public|AnyCPU' ">
+    <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
     <OutputPath>..\nuget\lib\net40\</OutputPath>
     <DefineConstants>TRACE;RELEASE_PUBLIC</DefineConstants>
     <Optimize>true</Optimize>
@@ -42,6 +45,7 @@
     <DocumentationFile>..\nuget\lib\net40\DevTrends.MvcDonutCaching.XML</DocumentationFile>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'CI|AnyCPU'">
+    <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
     <DebugSymbols>true</DebugSymbols>
     <OutputPath>bin\CI\</OutputPath>
     <DefineConstants>DEBUG;TRACE</DefineConstants>
@@ -113,7 +117,7 @@
   <Import Project="$(SolutionDir)\.nuget\NuGet.targets" Condition="Exists('$(SolutionDir)\.nuget\NuGet.targets')" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
-      <ErrorText>Ce projet fait référence à des packages NuGet qui sont manquants sur cet ordinateur. Activez l'option de restauration des packages NuGet pour les télécharger. Pour plus d'informations, consultez http://go.microsoft.com/fwlink/?LinkID=322105. Le fichier manquant est le suivant : {0}.</ErrorText>
+      <ErrorText>Este projeto faz referência a pacotes NuGet que estão faltando neste computador. Ative a opção de restauração de pacotes NuGet para baixá-los. Para mais informações, consulte http://go.microsoft.com/fwlink/?LinkID=322105. O arquivo ausente é o seguinte. : {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('$(SolutionDir)\.nuget\NuGet.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\.nuget\NuGet.targets'))" />
   </Target>
diff --git a/nuget/.DS_Store b/nuget/.DS_Store
new file mode 100644
index 0000000..2eed321
Binary files /dev/null and b/nuget/.DS_Store differ
diff --git a/nuget/MvcDonutCaching.nuspec b/nuget/MvcDonutCaching.nuspec
index dc3805f..7352a1d 100644
--- a/nuget/MvcDonutCaching.nuspec
+++ b/nuget/MvcDonutCaching.nuspec
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <package xmlns="http://schemas.microsoft.com/packaging/2011/08/nuspec.xsd">
     <metadata>
-        <id>MvcDonutCaching</id>
+        <id>MvcDonutCaching-2</id>
         <version>1.3.1-beta1</version>
         <authors>MvcDonutCaching contributors</authors>
         <owners>Clément Bourgeois</owners>
diff --git a/nuget/content/.DS_Store b/nuget/content/.DS_Store
new file mode 100644
index 0000000..24b94cb
Binary files /dev/null and b/nuget/content/.DS_Store differ