all services are singleton by default.

NzbDrone.Api/NancyBootstrapper.cs

@@ -19,7 +19,6 @@ using TinyIoC;
 
 namespace NzbDrone.Api
 {
-    [Singleton]
     public class NancyBootstrapper : TinyIoCNancyBootstrapper
     {
         private readonly TinyIoCContainer _tinyIoCContainer;

NzbDrone.Api/SignalR/Serializer.cs

@@ -1,12 +1,10 @@
 using System;
 using System.IO;
 using Microsoft.AspNet.SignalR.Json;
-using NzbDrone.Common.Composition;
 using NzbDrone.Common.Serializer;
 
 namespace NzbDrone.Api.SignalR
 {
-    [Singleton]
     public class Serializer : IJsonSerializer
     {
         private readonly JsonNetSerializer _signalRSerializer = new JsonNetSerializer();

NzbDrone.Common/Composition/Container.cs

@@ -86,9 +86,9 @@ namespace NzbDrone.Common.Composition
             _container.Register(registrationType, instance);
         }
 
-        public void RegisterAll(Type registrationType, IEnumerable<Type> implementationList)
+        public void RegisterAllAsSingleton(Type registrationType, IEnumerable<Type> implementationList)
         {
-            _container.RegisterMultiple(registrationType, implementationList);
+            _container.RegisterMultiple(registrationType, implementationList).AsSingleton();
         }
 
         public bool IsTypeRegistered(Type type)

NzbDrone.Common/Composition/ContainerBuilderBase.cs

@@ -64,22 +64,12 @@ namespace NzbDrone.Common.Composition
                 var impl = implementations.Single();
 
                 Trace.WriteLine(string.Format("Registering {0} -> {1}", contractType.FullName, impl.Name));
-
+                Container.RegisterSingleton(contractType, impl);
-
-                if (impl.HasAttribute<SingletonAttribute>())
-                {
-                    Container.RegisterSingleton(contractType, impl);
-                }
-                else
-                {
-                    Container.Register(contractType, impl);
-                }
             }
             else
             {
                 Trace.WriteLine(string.Format("Registering {0} -> {1}", contractType.FullName, implementations.Count));
-
+                Container.RegisterAllAsSingleton(contractType, implementations);
-                Container.RegisterAll(contractType, implementations);
             }
         }
 

NzbDrone.Common/Composition/IContainer.cs

@@ -24,7 +24,7 @@ namespace NzbDrone.Common.Composition
         IEnumerable<T> ResolveAll<T>() where T : class;
         IEnumerable<object> ResolveAll(Type type);
         void Register(Type registrationType, object instance);
-        void RegisterAll(Type registrationType, IEnumerable<Type> implementationList);
+        void RegisterAllAsSingleton(Type registrationType, IEnumerable<Type> implementationList);
         bool IsTypeRegistered(Type type);
 
         IEnumerable<Type> GetImplementations(Type contractType);

NzbDrone.Common/Composition/SingletonAttribute.cs

@@ -1,8 +0,0 @@
-using System;
-
-namespace NzbDrone.Common.Composition
-{
-    public class SingletonAttribute : Attribute
-    {
-    }
-}

NzbDrone.Common/Messaging/MessageAggregator.cs

@@ -3,13 +3,11 @@ using System.Linq;
 using System.Reflection;
 using System.Threading.Tasks;
 using NLog;
-using NzbDrone.Common.Composition;
 using NzbDrone.Common.EnsureThat;
 using NzbDrone.Common.Serializer;
 
 namespace NzbDrone.Common.Messaging
 {
-    [Singleton]
     public class MessageAggregator : IMessageAggregator
     {
         private readonly Logger _logger;

NzbDrone.Common/NzbDrone.Common.csproj

@@ -83,7 +83,6 @@
     <Compile Include="Cache\ICached.cs" />
     <Compile Include="Composition\Container.cs" />
     <Compile Include="Composition\IContainer.cs" />
-    <Compile Include="Composition\SingletonAttribute.cs" />
     <Compile Include="Composition\ContainerBuilderBase.cs" />
     <Compile Include="EnsureThat\Ensure.cs" />
     <Compile Include="EnsureThat\EnsureBoolExtensions.cs" />

NzbDrone.Core/Datastore/DbFactory.cs

@@ -2,7 +2,6 @@
 using System.Data.SQLite;
 using Marr.Data;
 using Marr.Data.Reflection;
-using NzbDrone.Common.Composition;
 using NzbDrone.Core.Datastore.Migration.Framework;
 
 
@@ -13,7 +12,6 @@ namespace NzbDrone.Core.Datastore
         IDatabase Create(string dbPath, MigrationType migrationType = MigrationType.Main);
     }
 
-    [Singleton]
     public class DbFactory : IDbFactory
     {
         private readonly IMigrationController _migrationController;

NzbDrone.Core/Datastore/Migration/Framework/MigrationLogger.cs

@@ -5,7 +5,6 @@ using NzbDrone.Common.Composition;
 
 namespace NzbDrone.Core.Datastore.Migration.Framework
 {
-    [Singleton]
     public class MigrationLogger : IAnnouncer
     {
         private readonly Logger _logger;

NzbDrone.Core/Jobs/Scheduler.cs

@@ -9,7 +9,6 @@ using Timer = System.Timers.Timer;
 
 namespace NzbDrone.Core.Jobs
 {
-    [Singleton]
     public class Scheduler :
         IHandle<ApplicationStartedEvent>,
         IHandle<ApplicationShutdownRequested>

NzbDrone/Router.cs

@@ -9,7 +9,6 @@ using IServiceProvider = NzbDrone.Common.IServiceProvider;
 
 namespace NzbDrone
 {
-    [Singleton]
     public class Router
     {
         private readonly INzbDroneServiceFactory _nzbDroneServiceFactory;