diff --git a/Esiur/Data/Codec.cs b/Esiur/Data/Codec.cs
index a8123b9..213d5e6 100644
--- a/Esiur/Data/Codec.cs
+++ b/Esiur/Data/Codec.cs
@@ -39,41 +39,42 @@ namespace Esiur.Data;
 public static class Codec
 {
  
-    delegate AsyncReply Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence);
+    delegate AsyncReply AsyncParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence);
 
+    delegate object SyncParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence);
 
-    static Parser[][] FixedParsers = new Parser[][]
+    static AsyncParser[][] FixedParsers = new AsyncParser[][]
     {
-        new Parser[]{
+        new AsyncParser[]{
             DataDeserializer.NullParser,
             DataDeserializer.BooleanFalseParser,
             DataDeserializer.BooleanTrueParser,
             DataDeserializer.NotModifiedParser,
         },
-        new Parser[]{
+        new AsyncParser[]{
             DataDeserializer.ByteParser,
             DataDeserializer.SByteParser,
             DataDeserializer.Char8Parser,
         },
-        new Parser[]{
+        new AsyncParser[]{
             DataDeserializer.Int16Parser,
             DataDeserializer.UInt16Parser,
             DataDeserializer.Char16Parser,
         },
-        new Parser[]{
+        new AsyncParser[]{
             DataDeserializer.Int32Parser,
             DataDeserializer.UInt32Parser,
             DataDeserializer.Float32Parser,
             DataDeserializer.ResourceParser,
             DataDeserializer.LocalResourceParser,
         },
-        new Parser[]{
+        new AsyncParser[]{
             DataDeserializer.Int64Parser,
             DataDeserializer.UInt64Parser,
             DataDeserializer.Float64Parser,
             DataDeserializer.DateTimeParser,
         },
-        new Parser[]
+        new AsyncParser[]
         {
             DataDeserializer.Int128Parser, // int 128
             DataDeserializer.UInt128Parser, // uint 128
@@ -81,7 +82,7 @@ public static class Codec
         }
     };
 
-    static Parser[] DynamicParsers = new Parser[]
+    static AsyncParser[] DynamicParsers = new AsyncParser[]
     {
         DataDeserializer.RawDataParser,
         DataDeserializer.StringParser,
@@ -90,7 +91,7 @@ public static class Codec
         DataDeserializer.RecordListParser,
     };
 
-    static Parser[] TypedParsers = new Parser[]
+    static AsyncParser[] TypedParsers = new AsyncParser[]
     {
         DataDeserializer.RecordParser,
         DataDeserializer.TypedListParser,
@@ -110,7 +111,7 @@ public static class Codec
     /// <param name="connection">DistributedConnection is required in case a structure in the array holds items at the other end.</param>
     /// <param name="dataType">DataType, in case the data is not prepended with DataType</param>
     /// <returns>Value</returns>
-    public static (uint, AsyncReply) Parse(byte[] data, uint offset, DistributedConnection connection, uint[] requestSequence, TransmissionType? dataType = null)
+    public static (uint, AsyncReply) ParseAsync(byte[] data, uint offset, DistributedConnection connection, uint[] requestSequence, TransmissionType? dataType = null)
     {
         uint len = 0;
 
@@ -143,6 +144,10 @@ public static class Codec
         }
     }
 
+    public static uint ParseSync(byte[] data, uint offset, TransmissionType? dataType = null)
+    {
+
+    }
 
     /// <summary>
     /// Check if a resource is local to a given connection.
diff --git a/Esiur/Data/DataDeserializer - Copy.cs b/Esiur/Data/DataDeserializer - Copy.cs
new file mode 100644
index 0000000..b702a5c
--- /dev/null
+++ b/Esiur/Data/DataDeserializer - Copy.cs	
@@ -0,0 +1,562 @@
+using Esiur.Core;
+using Esiur.Net.IIP;
+using Esiur.Resource;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Esiur.Data;
+using Esiur.Resource.Template;
+using System.Linq;
+using Esiur.Misc;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+
+namespace Esiur.Data;
+
+public static class DataDeserializer
+{
+    public static AsyncReply NullParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        return new AsyncReply(null);
+    }
+
+    public static AsyncReply BooleanTrueParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        return new AsyncReply<bool>(true);
+    }
+
+    public static AsyncReply BooleanFalseParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        return new AsyncReply<bool>(false);
+    }
+
+    public static AsyncReply NotModifiedParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        return new AsyncReply<NotModified>(new NotModified());
+    }
+
+    public static AsyncReply ByteParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        return new AsyncReply<byte>(data[offset]);
+    }
+    public static AsyncReply SByteParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        return new AsyncReply<sbyte>((sbyte)data[offset]);
+    }
+    public static unsafe AsyncReply Char16Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        fixed (byte* ptr = &data[offset])
+            return new AsyncReply<char>(*(char*)ptr);
+    }
+
+    public static AsyncReply Char8Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        return new AsyncReply<char>((char)data[offset]);
+    }
+
+
+    public static unsafe AsyncReply Int16Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        fixed (byte* ptr = &data[offset])
+            return new AsyncReply<short>(*(short*)ptr);
+    }
+
+    public static unsafe AsyncReply UInt16Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        fixed (byte* ptr = &data[offset])
+            return new AsyncReply<ushort>(*(ushort*)ptr);
+    }
+
+    public static unsafe AsyncReply Int32Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        fixed (byte* ptr = &data[offset])
+            return new AsyncReply<int>(*(int*)ptr);
+    }
+
+    public static unsafe AsyncReply UInt32Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        fixed (byte* ptr = &data[offset])
+            return new AsyncReply<uint>(*(uint*)ptr);
+    }
+
+    public static unsafe AsyncReply Float32Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        fixed (byte* ptr = &data[offset])
+            return new AsyncReply<float>(*(float*)ptr);
+    }
+
+    public static unsafe AsyncReply Float64Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        fixed (byte* ptr = &data[offset])
+            return new AsyncReply<double>(*(double*)ptr);
+    }
+
+    public static unsafe AsyncReply Float128Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        fixed (byte* ptr = &data[offset])
+            return new AsyncReply<decimal>(*(decimal*)ptr);
+    }
+
+    public static unsafe AsyncReply Int128Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        fixed (byte* ptr = &data[offset])
+            return new AsyncReply<decimal>(*(decimal*)ptr);
+    }
+
+
+    public static unsafe AsyncReply UInt128Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        fixed (byte* ptr = &data[offset])
+            return new AsyncReply<decimal>(*(decimal*)ptr);
+    }
+
+
+    public static unsafe AsyncReply Int64Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        fixed (byte* ptr = &data[offset])
+            return new AsyncReply<long>(*(long*)ptr);
+    }
+
+    public static unsafe AsyncReply UInt64Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        fixed (byte* ptr = &data[offset])
+            return new AsyncReply<ulong>(*(ulong*)ptr);
+    }
+
+    public static unsafe AsyncReply DateTimeParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        fixed (byte* ptr = &data[offset])
+            return new AsyncReply<DateTime>(new DateTime(*(long*)ptr, DateTimeKind.Utc));
+
+    }
+
+
+    public static unsafe AsyncReply ResourceParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        fixed (byte* ptr = &data[offset])
+            return connection.Fetch(*(uint*)ptr, requestSequence);
+    }
+
+    public static unsafe AsyncReply LocalResourceParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        fixed (byte* ptr = &data[offset])
+            return Warehouse.GetById(*(uint*)ptr);
+    }
+
+
+    public static unsafe AsyncReply RawDataParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        return new AsyncReply<byte[]>(data.Clip(offset, length));
+    }
+
+    public static unsafe AsyncReply StringParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        return new AsyncReply<string>(data.GetString(offset, length));
+    }
+
+    public static unsafe AsyncReply RecordParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+
+        var reply = new AsyncReply<IRecord>();
+
+        var classId = data.GetUUID(offset);
+        offset += 16;
+        length -= 16;
+
+
+        var template = Warehouse.GetTemplateByClassId(classId, TemplateType.Record);
+
+        var initRecord = (TypeTemplate template) =>
+        {
+            ListParser(data, offset, length, connection, requestSequence).Then(r =>
+            {
+                var ar = (object[])r;
+
+                if (template == null)
+                {
+                    // @TODO: add parse if no template settings
+                    reply.TriggerError(new AsyncException(ErrorType.Management, (ushort)ExceptionCode.TemplateNotFound,
+                            "Template not found for record."));
+                }
+                else if (template.DefinedType != null)
+                {
+                    var record = Activator.CreateInstance(template.DefinedType) as IRecord;
+                    for (var i = 0; i < template.Properties.Length; i++)
+                    {
+                        try
+                        {
+                            //var v = Convert.ChangeType(ar[i], template.Properties[i].PropertyInfo.PropertyType);
+                            var v = DC.CastConvert(ar[i], template.Properties[i].PropertyInfo.PropertyType);
+                            template.Properties[i].PropertyInfo.SetValue(record, v);
+                        }
+                        catch (Exception ex)
+                        {
+                            Global.Log(ex);
+                        }
+                    }
+
+                    reply.Trigger(record);
+                }
+                else
+                {
+                    var record = new Record();
+
+                    for (var i = 0; i < template.Properties.Length; i++)
+                        record.Add(template.Properties[i].Name, ar[i]);
+
+                    reply.Trigger(record);
+                }
+
+            });
+        };
+
+        if (template != null)
+        {
+            initRecord(template);
+        }
+        else if (connection != null)
+        {
+            // try to get the template from the other end
+            connection.GetTemplate(classId).Then(tmp =>
+            {
+                initRecord(tmp);
+            }).Error(x => reply.TriggerError(x));
+        }
+        else
+        {
+            initRecord(null);
+        }
+
+        return reply;
+    }
+
+    public static unsafe AsyncReply ConstantParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        throw new NotImplementedException();
+    }
+
+    public static unsafe AsyncReply EnumParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+
+        var classId = data.GetUUID(offset);
+        offset += 16;
+        var index = data[offset++];
+
+        var template = Warehouse.GetTemplateByClassId(classId, TemplateType.Enum);
+
+        if (template != null)
+        {
+            return new AsyncReply(template.Constants[index].Value);
+        }
+        else
+        {
+            var reply = new AsyncReply();
+
+            connection.GetTemplate(classId).Then(tmp =>
+            {
+                reply.Trigger(tmp.Constants[index].Value);
+            }).Error(x => reply.TriggerError(x));
+
+            return reply;
+        }
+    }
+
+
+
+    public static AsyncReply RecordListParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        var rt = new AsyncBag<IRecord>();
+
+        while (length > 0)
+        {
+            var (cs, reply) = Codec.Parse(data, offset, connection, requestSequence);
+
+            rt.Add(reply);
+
+            if (cs > 0)
+            {
+                offset += (uint)cs;
+                length -= (uint)cs;
+            }
+            else
+                throw new Exception("Error while parsing structured data");
+
+        }
+
+        rt.Seal();
+        return rt;
+    }
+
+    public static AsyncReply ResourceListParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        var rt = new AsyncBag<IResource>();
+
+        while (length > 0)
+        {
+            var (cs, reply) = Codec.Parse(data, offset, connection, requestSequence);
+
+            rt.Add(reply);
+
+            if (cs > 0)
+            {
+                offset += (uint)cs;
+                length -= (uint)cs;
+            }
+            else
+                throw new Exception("Error while parsing structured data");
+
+        }
+
+        rt.Seal();
+        return rt;
+    }
+
+
+    public static AsyncBag<object> ListParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        var rt = new AsyncBag<object>();
+
+        while (length > 0)
+        {
+            var (cs, reply) = Codec.Parse(data, offset, connection, requestSequence);
+
+            rt.Add(reply);
+
+            if (cs > 0)
+            {
+                offset += (uint)cs;
+                length -= (uint)cs;
+            }
+            else
+                throw new Exception("Error while parsing structured data");
+
+        }
+
+        rt.Seal();
+        return rt;
+    }
+
+    public static AsyncReply TypedMapParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        // get key type
+        var (keyCs, keyRepType) = RepresentationType.Parse(data, offset);
+        offset += keyCs;
+        length -= keyCs;
+
+        var (valueCs, valueRepType) = RepresentationType.Parse(data, offset);
+        offset += valueCs;
+        length -= valueCs;
+
+        var map = (IMap)Activator.CreateInstance(typeof(Map<,>).MakeGenericType(keyRepType.GetRuntimeType(), valueRepType.GetRuntimeType()));
+
+        var rt = new AsyncReply();
+
+        var results = new AsyncBag<object>();
+
+        while (length > 0)
+        {
+            var (cs, reply) = Codec.Parse(data, offset, connection, requestSequence);
+
+
+            results.Add(reply);
+
+            if (cs > 0)
+            {
+                offset += (uint)cs;
+                length -= (uint)cs;
+            }
+            else
+                throw new Exception("Error while parsing structured data");
+
+        }
+
+        results.Seal();
+
+        results.Then(ar =>
+        {
+            for (var i = 0; i < ar.Length; i += 2)
+                map.Add(ar[i], ar[i + 1]);
+
+            rt.Trigger(map);
+        });
+
+
+        return rt;
+
+    }
+
+    public static AsyncReply TupleParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        var results = new AsyncBag<object>();
+        var rt = new AsyncReply();
+
+        var tupleSize = data[offset++];
+        length--;
+
+        var types = new List<Type>();
+
+        for (var i = 0; i < tupleSize; i++)
+        {
+            var (cs, rep) = RepresentationType.Parse(data, offset);
+            types.Add(rep.GetRuntimeType());
+            offset += cs;
+            length -= cs;
+        }
+
+        while (length > 0)
+        {
+            var (cs, reply) = Codec.Parse(data, offset, connection, requestSequence);
+
+            results.Add(reply);
+
+            if (cs > 0)
+            {
+                offset += (uint)cs;
+                length -= (uint)cs;
+            }
+            else
+                throw new Exception("Error while parsing structured data");
+
+        }
+
+        results.Seal();
+
+
+        results.Then(ar =>
+                {
+                    if (ar.Length == 2)
+                    {
+                        var type = typeof(ValueTuple<,>).MakeGenericType(types.ToArray());
+                        rt.Trigger(Activator.CreateInstance(type, ar[0], ar[1]));
+                    }
+                    else if (ar.Length == 3)
+                    {
+                        var type = typeof(ValueTuple<,,>).MakeGenericType(types.ToArray());
+                        rt.Trigger(Activator.CreateInstance(type, ar[0], ar[1], ar[2]));
+                    }
+                    else if (ar.Length == 4)
+                    {
+                        var type = typeof(ValueTuple<,,,>).MakeGenericType(types.ToArray());
+                        rt.Trigger(Activator.CreateInstance(type, ar[0], ar[1], ar[2], ar[3]));
+                    }
+                });
+
+        return rt;
+    }
+
+    public static AsyncReply TypedListParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    {
+        var rt = new AsyncBag<object>();
+
+        // get the type
+        var (hdrCs, rep) = RepresentationType.Parse(data, offset);
+
+        offset += hdrCs;
+        length -= hdrCs;
+
+        var runtimeType = rep.GetRuntimeType();
+
+        rt.ArrayType = runtimeType;
+
+        while (length > 0)
+        {
+            var (cs, reply) = Codec.Parse(data, offset, connection, requestSequence);
+
+            rt.Add(reply);
+
+            if (cs > 0)
+            {
+                offset += (uint)cs;
+                length -= (uint)cs;
+            }
+            else
+                throw new Exception("Error while parsing structured data");
+
+        }
+
+        rt.Seal();
+        return rt;
+    }
+
+
+    public static AsyncBag<PropertyValue> PropertyValueArrayParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)//, bool ageIncluded = true)
+    {
+        var rt = new AsyncBag<PropertyValue>();
+
+
+        ListParser(data, offset, length, connection, requestSequence).Then(x =>
+        {
+            var ar = (object[])x;
+            var pvs = new List<PropertyValue>();
+
+            for (var i = 0; i < ar.Length; i += 3)
+                pvs.Add(new PropertyValue(ar[2], (ulong?)ar[0], (DateTime?)ar[1]));
+
+
+            rt.Trigger(pvs.ToArray());
+        });
+
+        return rt;
+
+    }
+
+    public static (uint, AsyncReply<PropertyValue>) PropertyValueParser(byte[] data, uint offset, DistributedConnection connection, uint[] requestSequence)//, bool ageIncluded = true)
+    {
+        var reply = new AsyncReply<PropertyValue>();
+
+        var age = data.GetUInt64(offset, Endian.Little);
+        offset += 8;
+
+        DateTime date = data.GetDateTime(offset, Endian.Little);
+        offset += 8;
+
+
+        var (valueSize, results) = Codec.Parse(data, offset, connection, requestSequence);
+
+        results.Then(value =>
+        {
+            reply.Trigger(new PropertyValue(value, age, date));
+        });
+
+        return (16 + valueSize, reply);
+    }
+
+    public static AsyncReply<KeyList<PropertyTemplate, PropertyValue[]>> HistoryParser(byte[] data, uint offset, uint length, IResource resource, DistributedConnection connection, uint[] requestSequence)
+    {
+        //var count = (int)toAge - (int)fromAge;
+
+        var list = new KeyList<PropertyTemplate, PropertyValue[]>();
+
+        var reply = new AsyncReply<KeyList<PropertyTemplate, PropertyValue[]>>();
+
+        var bagOfBags = new AsyncBag<PropertyValue[]>();
+
+        var ends = offset + length;
+        while (offset < ends)
+        {
+            var index = data[offset++];
+            var pt = resource.Instance.Template.GetPropertyTemplateByIndex(index);
+            list.Add(pt, null);
+            var cs = data.GetUInt32(offset, Endian.Little);
+            offset += 4;
+
+            var (len, pv) = PropertyValueParser(data, offset, connection, requestSequence);
+
+            bagOfBags.Add(pv);// ParsePropertyValueArray(data, offset, cs, connection));
+            offset += len;
+        }
+
+        bagOfBags.Seal();
+
+        bagOfBags.Then(x =>
+        {
+            for (var i = 0; i < list.Count; i++)
+                list[list.Keys.ElementAt(i)] = x[i];
+
+            reply.Trigger(list);
+        });
+
+        return reply;
+
+    }
+
+}
diff --git a/Esiur/Data/DataDeserializer.cs b/Esiur/Data/DataDeserializer.cs
index b702a5c..320dcb3 100644
--- a/Esiur/Data/DataDeserializer.cs
+++ b/Esiur/Data/DataDeserializer.cs
@@ -14,146 +14,146 @@ namespace Esiur.Data;
 
 public static class DataDeserializer
 {
-    public static AsyncReply NullParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static object NullParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
-        return new AsyncReply(null);
+        return null;
     }
 
-    public static AsyncReply BooleanTrueParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static object BooleanTrueParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
-        return new AsyncReply<bool>(true);
+        return true;
     }
 
-    public static AsyncReply BooleanFalseParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static object BooleanFalseParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
-        return new AsyncReply<bool>(false);
+        return false;
     }
 
-    public static AsyncReply NotModifiedParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static object NotModifiedParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
-        return new AsyncReply<NotModified>(new NotModified());
+        return NotModified.Default;
     }
 
-    public static AsyncReply ByteParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static object ByteParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
-        return new AsyncReply<byte>(data[offset]);
+        return data[offset];
     }
-    public static AsyncReply SByteParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static object SByteParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
-        return new AsyncReply<sbyte>((sbyte)data[offset]);
+        return (sbyte)data[offset];
     }
-    public static unsafe AsyncReply Char16Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object Char16Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
         fixed (byte* ptr = &data[offset])
-            return new AsyncReply<char>(*(char*)ptr);
+            return *(char*)ptr;
     }
 
-    public static AsyncReply Char8Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static object Char8Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
-        return new AsyncReply<char>((char)data[offset]);
+        return (char)data[offset];
     }
 
 
-    public static unsafe AsyncReply Int16Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object Int16Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
         fixed (byte* ptr = &data[offset])
-            return new AsyncReply<short>(*(short*)ptr);
+            return *(short*)ptr;
     }
 
-    public static unsafe AsyncReply UInt16Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object UInt16Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
         fixed (byte* ptr = &data[offset])
-            return new AsyncReply<ushort>(*(ushort*)ptr);
+            return *(ushort*)ptr;
     }
 
-    public static unsafe AsyncReply Int32Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object Int32Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
         fixed (byte* ptr = &data[offset])
-            return new AsyncReply<int>(*(int*)ptr);
+            return *(int*)ptr;
     }
 
-    public static unsafe AsyncReply UInt32Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe uint UInt32Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
         fixed (byte* ptr = &data[offset])
-            return new AsyncReply<uint>(*(uint*)ptr);
+            return *(uint*)ptr;
     }
 
-    public static unsafe AsyncReply Float32Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object Float32Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
         fixed (byte* ptr = &data[offset])
-            return new AsyncReply<float>(*(float*)ptr);
+            return *(float*)ptr;
     }
 
-    public static unsafe AsyncReply Float64Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object Float64Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
         fixed (byte* ptr = &data[offset])
-            return new AsyncReply<double>(*(double*)ptr);
+            return *(double*)ptr;
     }
 
-    public static unsafe AsyncReply Float128Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object Float128Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
         fixed (byte* ptr = &data[offset])
-            return new AsyncReply<decimal>(*(decimal*)ptr);
+            return *(decimal*)ptr;
     }
 
-    public static unsafe AsyncReply Int128Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object Int128Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
         fixed (byte* ptr = &data[offset])
-            return new AsyncReply<decimal>(*(decimal*)ptr);
+            return *(decimal*)ptr;
     }
 
 
-    public static unsafe AsyncReply UInt128Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object UInt128Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
         fixed (byte* ptr = &data[offset])
-            return new AsyncReply<decimal>(*(decimal*)ptr);
+            return *(decimal*)ptr;
     }
 
 
-    public static unsafe AsyncReply Int64Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object Int64Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
         fixed (byte* ptr = &data[offset])
-            return new AsyncReply<long>(*(long*)ptr);
+            return *(long*)ptr;
     }
 
-    public static unsafe AsyncReply UInt64Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object UInt64Parser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
         fixed (byte* ptr = &data[offset])
-            return new AsyncReply<ulong>(*(ulong*)ptr);
+            return *(ulong*)ptr;
     }
 
-    public static unsafe AsyncReply DateTimeParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object DateTimeParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
         fixed (byte* ptr = &data[offset])
-            return new AsyncReply<DateTime>(new DateTime(*(long*)ptr, DateTimeKind.Utc));
+            return new DateTime(*(long*)ptr, DateTimeKind.Utc);
 
     }
 
 
-    public static unsafe AsyncReply ResourceParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object ResourceParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
         fixed (byte* ptr = &data[offset])
             return connection.Fetch(*(uint*)ptr, requestSequence);
     }
 
-    public static unsafe AsyncReply LocalResourceParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object LocalResourceParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
         fixed (byte* ptr = &data[offset])
             return Warehouse.GetById(*(uint*)ptr);
     }
 
 
-    public static unsafe AsyncReply RawDataParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object RawDataParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
-        return new AsyncReply<byte[]>(data.Clip(offset, length));
+        return data.Clip(offset, length);
     }
 
-    public static unsafe AsyncReply StringParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object StringParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
-        return new AsyncReply<string>(data.GetString(offset, length));
+        return data.GetString(offset, length);
     }
 
-    public static unsafe AsyncReply RecordParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object RecordParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
 
         var reply = new AsyncReply<IRecord>();
@@ -229,7 +229,7 @@ public static class DataDeserializer
         return reply;
     }
 
-    public static unsafe AsyncReply ConstantParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
+    public static unsafe object ConstantParser(byte[] data, uint offset, uint length, DistributedConnection connection, uint[] requestSequence)
     {
         throw new NotImplementedException();
     }
@@ -268,7 +268,7 @@ public static class DataDeserializer
 
         while (length > 0)
         {
-            var (cs, reply) = Codec.Parse(data, offset, connection, requestSequence);
+            var (cs, reply) = Codec.ParseAsync(data, offset, connection, requestSequence);
 
             rt.Add(reply);
 
@@ -292,7 +292,7 @@ public static class DataDeserializer
 
         while (length > 0)
         {
-            var (cs, reply) = Codec.Parse(data, offset, connection, requestSequence);
+            var (cs, reply) = Codec.ParseAsync(data, offset, connection, requestSequence);
 
             rt.Add(reply);
 
@@ -317,7 +317,7 @@ public static class DataDeserializer
 
         while (length > 0)
         {
-            var (cs, reply) = Codec.Parse(data, offset, connection, requestSequence);
+            var (cs, reply) = Codec.ParseAsync(data, offset, connection, requestSequence);
 
             rt.Add(reply);
 
@@ -354,7 +354,7 @@ public static class DataDeserializer
 
         while (length > 0)
         {
-            var (cs, reply) = Codec.Parse(data, offset, connection, requestSequence);
+            var (cs, reply) = Codec.ParseAsync(data, offset, connection, requestSequence);
 
 
             results.Add(reply);
@@ -404,7 +404,7 @@ public static class DataDeserializer
 
         while (length > 0)
         {
-            var (cs, reply) = Codec.Parse(data, offset, connection, requestSequence);
+            var (cs, reply) = Codec.ParseAsync(data, offset, connection, requestSequence);
 
             results.Add(reply);
 
@@ -459,7 +459,7 @@ public static class DataDeserializer
 
         while (length > 0)
         {
-            var (cs, reply) = Codec.Parse(data, offset, connection, requestSequence);
+            var (cs, reply) = Codec.ParseAsync(data, offset, connection, requestSequence);
 
             rt.Add(reply);
 
@@ -510,7 +510,7 @@ public static class DataDeserializer
         offset += 8;
 
 
-        var (valueSize, results) = Codec.Parse(data, offset, connection, requestSequence);
+        var (valueSize, results) = Codec.ParseAsync(data, offset, connection, requestSequence);
 
         results.Then(value =>
         {
diff --git a/Esiur/Data/NotModified.cs b/Esiur/Data/NotModified.cs
index 2dfed3d..214e22d 100644
--- a/Esiur/Data/NotModified.cs
+++ b/Esiur/Data/NotModified.cs
@@ -31,5 +31,5 @@ using System.Threading.Tasks;
 namespace Esiur.Data;
 public class NotModified
 {
-
+    public static NotModified Default { get; set; } = new NotModified();
 }
diff --git a/Esiur/Esiur.csproj b/Esiur/Esiur.csproj
index 6d1fc7e..b4d91aa 100644
--- a/Esiur/Esiur.csproj
+++ b/Esiur/Esiur.csproj
@@ -56,12 +56,14 @@
 
 
 	<ItemGroup>
+	  <Compile Remove="Data\DataDeserializer - Copy.cs" />
 	  <Compile Remove="Data\NullabilityInfo.cs" />
 	  <Compile Remove="Data\NullabilityInfoContext.cs" />
 	</ItemGroup>
 
 
 	<ItemGroup>
+		<None Include="Data\DataDeserializer - Copy.cs" />
 		<None Include="Data\NullabilityInfo.cs" />
 		<None Include="Data\NullabilityInfoContext.cs" />
 		<None Include="LICENSE" Pack="true" PackagePath=""></None>