diff --git a/NzbDrone.Core.Test/Datastore/ObjectDatabaseFixture.cs b/NzbDrone.Core.Test/Datastore/ObjectDatabaseFixture.cs
new file mode 100644
index 000000000..b5c0c6f46
--- /dev/null
+++ b/NzbDrone.Core.Test/Datastore/ObjectDatabaseFixture.cs
@@ -0,0 +1,54 @@
+using System.Linq;
+using System;
+using System.Collections.Generic;
+using FizzWare.NBuilder;
+using FluentAssertions;
+using NUnit.Framework;
+using NzbDrone.Core.Model;
+using NzbDrone.Core.Repository;
+using NzbDrone.Core.Repository.Quality;
+using NzbDrone.Core.Test.Framework;
+using Db4objects.Db4o.Linq;
+
+namespace NzbDrone.Core.Test.Datastore
+{
+    [TestFixture]
+    public class ObjectDatabaseFixture : CoreTest
+    {
+        [SetUp]
+        public void SetUp()
+        {
+            WithObjectDb();
+        }
+
+        [Test]
+        public void should_be_able_to_write_to_database()
+        {
+
+            var series = Builder<Series>.CreateNew().Build();
+
+            ObjDb.Save(series);
+
+            ObjDb.Ext().Purge();
+
+            ObjDb.AsQueryable<Series>().Should().HaveCount(1);
+
+        }
+
+        [Test]
+        public void should_not_store_dirty_data_in_cache()
+        {
+            var episode = Builder<Episode>.CreateNew().Build();
+            
+            //Save series without episode attached
+            ObjDb.Save(episode);
+            
+            ObjDb.AsQueryable<Episode>().Single().Series.Should().BeNull();
+            
+            episode.Series = Builder<Series>.CreateNew().Build();
+
+            ObjDb.AsQueryable<Episode>().Single().Series.Should().BeNull();
+
+        }
+    }
+}
diff --git a/NzbDrone.Core.Test/Framework/CoreTest.cs b/NzbDrone.Core.Test/Framework/CoreTest.cs
index 9093e2fe9..49c76790a 100644
--- a/NzbDrone.Core.Test/Framework/CoreTest.cs
+++ b/NzbDrone.Core.Test/Framework/CoreTest.cs
@@ -1,5 +1,6 @@
 using System;
 using System.IO;
+using Db4objects.Db4o.IO;
 using NUnit.Framework;
 using NzbDrone.Core.Datastore;
 using NzbDrone.Core.Model.Notification;
@@ -9,14 +10,14 @@ using PetaPoco;
 
 namespace NzbDrone.Core.Test.Framework
 {
-    public class CoreTest : TestBase
+    public abstract class CoreTest : TestBase
     {
         private string _dbTemplateName;
 
         [SetUp]
         public void CoreTestSetup()
         {
-            if(NCrunch.Framework.NCrunchEnvironment.NCrunchIsResident())
+            if (NCrunch.Framework.NCrunchEnvironment.NCrunchIsResident())
             {
                 _dbTemplateName = Path.Combine(Path.GetTempPath(), Path.GetTempFileName()) + ".sdf";
             }
@@ -24,6 +25,7 @@ namespace NzbDrone.Core.Test.Framework
             {
                 _dbTemplateName = "db_template.sdf";
             }
+
             CreateDataBaseTemplate();
         }
 
@@ -71,12 +73,32 @@ namespace NzbDrone.Core.Test.Framework
             }
         }
 
+        private IObjectDbSession _objDb;
+        protected IObjectDbSession ObjDb
+        {
+            get
+            {
+                if (_objDb == null)
+                    throw new InvalidOperationException("Test object database doesn't exists. Make sure you call WithRealDb() if you intend to use an actual database.");
+
+                return _objDb;
+            }
+        }
+
+
+
         protected void WithRealDb()
         {
             _db = GetEmptyDatabase();
             Mocker.SetConstant(Db);
         }
 
+        protected void WithObjectDb()
+        {
+            _objDb = new ObjectDbSessionFactory().Create(new PagingMemoryStorage());
+            Mocker.SetConstant(ObjDb);
+        }
+
         protected static ProgressNotification MockNotification
         {
             get
@@ -106,6 +128,11 @@ namespace NzbDrone.Core.Test.Framework
                 }
                 catch (IOException) { }
             }
+
+            if (_objDb != null)
+            {
+                _objDb.Dispose();
+            }
         }
     }
 }
diff --git a/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj b/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
index e6403ee35..0771699af 100644
--- a/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
+++ b/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
@@ -65,6 +65,15 @@
     <Reference Include="AutoMoq">
       <HintPath>..\packages\AutoMoq.1.6.1\lib\AutoMoq.dll</HintPath>
     </Reference>
+    <Reference Include="Db4objects.Db4o">
+      <HintPath>..\packages\db4o-devel.8.1.184.15492\lib\net40\Db4objects.Db4o.dll</HintPath>
+    </Reference>
+    <Reference Include="Db4objects.Db4o.Data.Services">
+      <HintPath>..\packages\db4o-devel.8.1.184.15492\lib\net40\Db4objects.Db4o.Data.Services.dll</HintPath>
+    </Reference>
+    <Reference Include="Db4objects.Db4o.Linq">
+      <HintPath>..\packages\db4o-devel.8.1.184.15492\lib\net40\Db4objects.Db4o.Linq.dll</HintPath>
+    </Reference>
     <Reference Include="DeskMetrics.NET, Version=3.0.0.0, Culture=neutral, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\Libraries\DeskMetrics\DeskMetrics.NET.dll</HintPath>
@@ -88,6 +97,9 @@
     <Reference Include="Microsoft.Practices.Unity.Configuration">
       <HintPath>..\packages\Unity.2.1.505.2\lib\NET35\Microsoft.Practices.Unity.Configuration.dll</HintPath>
     </Reference>
+    <Reference Include="Mono.Reflection">
+      <HintPath>..\packages\db4o-devel.8.1.184.15492\lib\net40\Mono.Reflection.dll</HintPath>
+    </Reference>
     <Reference Include="Moq, Version=4.0.10827.0, Culture=neutral, PublicKeyToken=69f491c39445e920, processorArchitecture=MSIL">
       <HintPath>..\packages\Moq.4.0.10827\lib\NET40\Moq.dll</HintPath>
     </Reference>
@@ -134,6 +146,7 @@
     </Reference>
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Datastore\ObjectDatabaseFixture.cs" />
     <Compile Include="Framework\CoreTestTSubject.cs" />
     <Compile Include="HelperTests\XElementHelperTests\ConvertToTFixture.cs" />
     <Compile Include="IndexerTests\NzbxFixture.cs" />
diff --git a/NzbDrone.Core.Test/packages.config b/NzbDrone.Core.Test/packages.config
index c9d7a612d..ca7aad22c 100644
--- a/NzbDrone.Core.Test/packages.config
+++ b/NzbDrone.Core.Test/packages.config
@@ -3,6 +3,7 @@
   <package id="Autofac" version="2.6.3.862" targetFramework="net40" />
   <package id="AutoMoq" version="1.6.1" targetFramework="net40" />
   <package id="CommonServiceLocator" version="1.0" targetFramework="net40" />
+  <package id="db4o-devel" version="8.1.184.15492" targetFramework="net40" />
   <package id="FluentAssertions" version="2.0.0.1" targetFramework="net40" />
   <package id="Microsoft.SqlServer.Compact" version="4.0.8876.1" targetFramework="net40" />
   <package id="Moq" version="4.0.10827" />
diff --git a/NzbDrone.Core/Datastore/DbProviderFactory.cs b/NzbDrone.Core/Datastore/DbProviderFactory.cs
index 4e94284d3..697296550 100644
--- a/NzbDrone.Core/Datastore/DbProviderFactory.cs
+++ b/NzbDrone.Core/Datastore/DbProviderFactory.cs
@@ -1,6 +1,10 @@
-using System;
+using System;
 using System.Data.Common;
 using System.Data.SqlServerCe;
+using Db4objects.Db4o;
+using Db4objects.Db4o.IO;
+using Db4objects.Db4o.Internal;
+using Db4objects.Db4o.Internal.Config;
 using StackExchange.Profiling;
 using StackExchange.Profiling.Data;
 
@@ -23,4 +27,23 @@ namespace NzbDrone.Core.Datastore
             return connection;
         }
     }
+
+
+    public class ObjectDbSessionFactory
+    {
+        public IObjectDbSession Create(IStorage storage = null)
+        {
+            if (storage == null)
+            {
+                storage = new FileStorage();
+            }
+
+            var config = Db4oEmbedded.NewConfiguration();
+            config.File.Storage = storage;
+           
+
+            var objectContainer = Db4oEmbedded.OpenFile(config, "nzbdrone.db4o");
+            return new ObjectDbSession((ObjectContainerBase)objectContainer);
+        }
+    }
 }
diff --git a/NzbDrone.Core/Datastore/IObjectDbSession.cs b/NzbDrone.Core/Datastore/IObjectDbSession.cs
new file mode 100644
index 000000000..e1eace60d
--- /dev/null
+++ b/NzbDrone.Core/Datastore/IObjectDbSession.cs
@@ -0,0 +1,142 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using Db4objects.Db4o;
+using Db4objects.Db4o.Internal;
+using Db4objects.Db4o.Internal.References;
+
+namespace NzbDrone.Core.Datastore
+{
+    public interface IObjectDbSession : IObjectContainer
+    {
+        void Save(object obj);
+        void Save(object obj, int depth);
+        void SaveAll<T>(Transaction transaction, IEnumerator<T> objects);
+
+        void Update(object obj);
+        void Update(object obj, int depth);
+        void UpdateAll<T>(Transaction transaction, IEnumerator<T> objects);
+    }
+
+
+    public class ObjectDbSession : ObjectContainerSession, IObjectDbSession
+    {
+        private NoCahceRefrenceSystem _noCacheRefSystem;
+
+        public ObjectDbSession(ObjectContainerBase server)
+            : base(server, server.NewTransaction(server.SystemTransaction(), new NoCahceRefrenceSystem(), false))
+        {
+            _transaction.SetOutSideRepresentation(this);
+            _noCacheRefSystem = (NoCahceRefrenceSystem)_transaction.ReferenceSystem();
+        }
+
+        public override void Store(object obj)
+        {
+            throw new InvalidOperationException("Store is not supported. please use Save() or Update()");
+        }
+
+        public override void StoreAll(Transaction transaction, IEnumerator objects)
+        {
+            throw new InvalidOperationException("Store is not supported. please use Save() or Update()");
+
+        }
+
+        public override void Store(object obj, int depth)
+        {
+            throw new InvalidOperationException("Store is not supported. please use Save() or Update()");
+        }
+
+        public void Save(object obj)
+        {
+            ValidateSave(obj);
+            base.Store(obj);
+            Commit();
+        }
+
+        public void Save(object obj, int depth)
+        {
+            ValidateSave(obj);
+            base.Store(obj, depth);
+            Commit();
+
+        }
+
+        public void SaveAll<T>(Transaction transaction, IEnumerator<T> objects)
+        {
+            var obj = objects.ToIEnumerable().ToList();
+            obj.ForEach(c => ValidateSave(c));
+
+            base.StoreAll(transaction, obj.GetEnumerator());
+            Commit();
+
+        }
+
+
+        public void Update(object obj)
+        {
+            ValidateUpdate(obj);
+            base.Store(obj);
+            Commit();
+        }
+
+        public void Update(object obj, int depth)
+        {
+            ValidateUpdate(obj);
+            base.Store(obj, depth);
+            Commit();
+        }
+
+        public void UpdateAll<T>(Transaction transaction, IEnumerator<T> objects)
+        {
+            var obj = objects.ToIEnumerable().ToList();
+            obj.ForEach(c => ValidateUpdate(c));
+
+            base.StoreAll(transaction, obj.GetEnumerator());
+            Commit();
+        }
+
+        public void UpdateAll(Transaction transaction, IEnumerator objects)
+        {
+            throw new NotImplementedException();
+        }
+
+        public new void Purge()
+        {
+            _noCacheRefSystem.Reset();
+        }
+
+        private void ValidateSave(object obj)
+        {
+            if (IsAttached(obj))
+            {
+                throw new InvalidOperationException("Attempted to save an object that is already attached to database");
+            }
+        }
+
+        private void ValidateUpdate(object obj)
+        {
+            if (!IsAttached(obj))
+            {
+                throw new InvalidOperationException("Attempted to update an object that is not attached to database");
+            }
+        }
+
+        private bool IsAttached(object obj)
+        {
+            return base.Ext().GetID(obj) > 0;
+        }
+    }
+
+
+    public static class Ext
+    {
+        public static IEnumerable<T> ToIEnumerable<T>(this IEnumerator<T> enumerator)
+        {
+            while (enumerator.MoveNext())
+            {
+                yield return enumerator.Current;
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/NzbDrone.Core/Datastore/NoCahceRefrenceSystem.cs b/NzbDrone.Core/Datastore/NoCahceRefrenceSystem.cs
new file mode 100644
index 000000000..73e5eac1b
--- /dev/null
+++ b/NzbDrone.Core/Datastore/NoCahceRefrenceSystem.cs
@@ -0,0 +1,116 @@
+using System.Linq;
+using Db4objects.Db4o;
+using Db4objects.Db4o.Foundation;
+using Db4objects.Db4o.Internal;
+using Db4objects.Db4o.Internal.References;
+
+namespace NzbDrone.Core.Datastore
+{
+    public class NoCahceRefrenceSystem : IReferenceSystem
+    {
+        private ObjectReference _hashCodeTree;
+        private ObjectReference _idTree;
+
+        internal NoCahceRefrenceSystem()
+        {
+
+        }
+
+        public virtual void AddNewReference(ObjectReference @ref)
+        {
+            AddReference(@ref);
+        }
+
+        public virtual void AddExistingReference(ObjectReference @ref)
+        {
+            AddReference(@ref);
+        }
+
+        public virtual void Commit()
+        {
+            Reset();
+        }
+
+
+
+        public virtual ObjectReference ReferenceForId(int id)
+        {
+            if (DTrace.enabled)
+                DTrace.GetYapobject.Log(id);
+            if (_idTree == null)
+                return null;
+            if (!ObjectReference.IsValidId(id))
+                return null;
+            else
+                return _idTree.Id_find(id);
+        }
+
+        public virtual ObjectReference ReferenceForObject(object obj)
+        {
+            if (_hashCodeTree == null)
+                return null;
+            else
+                return _hashCodeTree.Hc_find(obj);
+        }
+
+        public virtual void RemoveReference(ObjectReference @ref)
+        {
+            if (DTrace.enabled)
+                DTrace.ReferenceRemoved.Log(@ref.GetID());
+            if (_hashCodeTree != null)
+                _hashCodeTree = _hashCodeTree.Hc_remove(@ref);
+            if (_idTree == null)
+                return;
+            _idTree = _idTree.Id_remove(@ref);
+        }
+
+        public virtual void Rollback()
+        {
+            Reset();
+        }
+
+        public virtual void TraverseReferences(IVisitor4 visitor)
+        {
+            if (_hashCodeTree == null)
+                return;
+            _hashCodeTree.Hc_traverse(visitor);
+        }
+
+        public virtual void Discarded()
+        {
+        }
+
+
+        public void Reset()
+        {
+            _hashCodeTree = null;
+            _idTree = null;
+        }
+
+        private void AddReference(ObjectReference @ref)
+        {
+            @ref.Ref_init();
+            IdAdd(@ref);
+            HashCodeAdd(@ref);
+        }
+
+        private void HashCodeAdd(ObjectReference @ref)
+        {
+            if (_hashCodeTree == null)
+                _hashCodeTree = @ref;
+            else
+                _hashCodeTree = _hashCodeTree.Hc_add(@ref);
+        }
+
+        private void IdAdd(ObjectReference @ref)
+        {
+            if (DTrace.enabled)
+                DTrace.IdTreeAdd.Log(@ref.GetID());
+            if (_idTree == null)
+                _idTree = @ref;
+            else
+                _idTree = _idTree.Id_add(@ref);
+        }
+
+    }
+}
diff --git a/NzbDrone.Core/NzbDrone.Core.csproj b/NzbDrone.Core/NzbDrone.Core.csproj
index 73ec30106..a63b19dc8 100644
--- a/NzbDrone.Core/NzbDrone.Core.csproj
+++ b/NzbDrone.Core/NzbDrone.Core.csproj
@@ -133,6 +133,15 @@
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\packages\DataTables.Mvc.Core.0.1.0.85\lib\DataTables.Mvc.Core.dll</HintPath>
     </Reference>
+    <Reference Include="Db4objects.Db4o">
+      <HintPath>..\packages\db4o-devel.8.1.184.15492\lib\net40\Db4objects.Db4o.dll</HintPath>
+    </Reference>
+    <Reference Include="Db4objects.Db4o.Data.Services">
+      <HintPath>..\packages\db4o-devel.8.1.184.15492\lib\net40\Db4objects.Db4o.Data.Services.dll</HintPath>
+    </Reference>
+    <Reference Include="Db4objects.Db4o.Linq">
+      <HintPath>..\packages\db4o-devel.8.1.184.15492\lib\net40\Db4objects.Db4o.Linq.dll</HintPath>
+    </Reference>
     <Reference Include="DeskMetrics.NET">
       <HintPath>..\Libraries\DeskMetrics\DeskMetrics.NET.dll</HintPath>
     </Reference>
@@ -168,6 +177,9 @@
     <Reference Include="MiniProfiler">
       <HintPath>..\packages\MiniProfiler.2.0.2\lib\net40\MiniProfiler.dll</HintPath>
     </Reference>
+    <Reference Include="Mono.Reflection">
+      <HintPath>..\packages\db4o-devel.8.1.184.15492\lib\net40\Mono.Reflection.dll</HintPath>
+    </Reference>
     <Reference Include="Newtonsoft.Json, Version=4.5.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\packages\Newtonsoft.Json.4.5.11\lib\net40\Newtonsoft.Json.dll</HintPath>
@@ -223,6 +235,8 @@
     <Compile Include="Constants.cs" />
     <Compile Include="ContainerExtentions.cs" />
     <Compile Include="Datastore\ConnectionFactory.cs" />
+    <Compile Include="Datastore\NoCahceRefrenceSystem.cs" />
+    <Compile Include="Datastore\IObjectDbSession.cs" />
     <Compile Include="Datastore\MigrationLogger.cs" />
     <Compile Include="Datastore\MigrationsHelper.cs" />
     <Compile Include="Datastore\CustomeMapper.cs" />
diff --git a/NzbDrone.Core/packages.config b/NzbDrone.Core/packages.config
index 98f1f8ef1..41f27a466 100644
--- a/NzbDrone.Core/packages.config
+++ b/NzbDrone.Core/packages.config
@@ -2,6 +2,7 @@
 <packages>
   <package id="Autofac" version="2.6.3.862" targetFramework="net40" />
   <package id="DataTables.Mvc.Core" version="0.1.0.85" />
+  <package id="db4o-devel" version="8.1.184.15492" targetFramework="net40" />
   <package id="DotNetZip" version="1.9.1.8" />
   <package id="Growl" version="0.6" />
   <package id="MediaInfoNet" version="0.3" targetFramework="net40" />
diff --git a/NzbDrone.Services/NzbDrone.Services.Service/Web.config b/NzbDrone.Services/NzbDrone.Services.Service/Web.config
index d93876ae7..64d264fb2 100644
--- a/NzbDrone.Services/NzbDrone.Services.Service/Web.config
+++ b/NzbDrone.Services/NzbDrone.Services.Service/Web.config
@@ -16,7 +16,7 @@
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
         <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.0.8.0" newVersion="4.0.8.0" />
+        <bindingRedirect oldVersion="0.0.0.0-4.5.0.0" newVersion="4.5.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" culture="neutral" />
diff --git a/NzbDrone.Test.Common/TestBase.cs b/NzbDrone.Test.Common/TestBase.cs
index ff9b64bca..b5968ae5f 100644
--- a/NzbDrone.Test.Common/TestBase.cs
+++ b/NzbDrone.Test.Common/TestBase.cs
@@ -8,9 +8,8 @@ using NzbDrone.Test.Common.AutoMoq;
 
 namespace NzbDrone.Test.Common
 {
-    public class TestBase : LoggingTest
+    public abstract class TestBase : LoggingTest
     {
-
         protected const string INTEGRATION_TEST = "Integration Test";