diff --git a/nuget-publish.bat b/nuget-publish.bat
index ab51070f..f543c2bb 100644
--- a/nuget-publish.bat
+++ b/nuget-publish.bat
@@ -1,9 +1,9 @@
 :start
 ::定义版本
-set EFCORE2=2.3.1.76
-set EFCORE3=3.3.1.76
-set EFCORE5=5.3.1.76
-set EFCORE6=6.3.1.76
+set EFCORE2=2.3.1.77
+set EFCORE3=3.3.1.77
+set EFCORE5=5.3.1.77
+set EFCORE6=6.3.1.77
 
 ::删除所有bin与obj下的文件
 @echo off
diff --git a/src/ShardingCore/DIExtensions/ShardingCoreConfigBuilder.cs b/src/ShardingCore/DIExtensions/ShardingCoreConfigBuilder.cs
index 92586aab..62b63e69 100644
--- a/src/ShardingCore/DIExtensions/ShardingCoreConfigBuilder.cs
+++ b/src/ShardingCore/DIExtensions/ShardingCoreConfigBuilder.cs
@@ -103,7 +103,9 @@ namespace ShardingCore.DIExtensions
         public bool? IgnoreCreateTableError { get; set; } = true;
         public int MaxQueryConnectionsLimit { get; set; } = Environment.ProcessorCount;
         public ConnectionModeEnum ConnectionMode { get; set; } = ConnectionModeEnum.SYSTEM_AUTO;
+        [Obsolete]
         public bool? EnableTableRouteCompileCache { get; set; }
+        [Obsolete]
         public bool? EnableDataSourceRouteCompileCache { get; set; }
 
         private readonly  ISet<Type> _createTableEntities = new HashSet<Type>();
diff --git a/src/ShardingCore/Extensions/DbContextExtension.cs b/src/ShardingCore/Extensions/DbContextExtension.cs
index e466b0f2..40133655 100644
--- a/src/ShardingCore/Extensions/DbContextExtension.cs
+++ b/src/ShardingCore/Extensions/DbContextExtension.cs
@@ -67,15 +67,6 @@ namespace ShardingCore.Extensions
 #endif
         }
 
-        /// <summary>
-        /// 移除所有的没有分片的表
-        /// </summary>
-        /// <param name="dbContext"></param>
-        [Obsolete($"plz use {nameof(RemoveDbContextAllRelationModelThatIsNoSharding)}")]
-        public static void RemoveDbContextAllRelationModelThatIsNoShardingTable(this DbContext dbContext)
-        {
-            RemoveDbContextAllRelationModelThatIsNoSharding(dbContext);
-        }
         /// <summary>
         /// 移除所有的没有分片的表
         /// </summary>
diff --git a/src/ShardingCore/Sharding/ReadWriteConfigurations/ReadWriteShardingConnectionStringResolver.cs b/src/ShardingCore/Sharding/ReadWriteConfigurations/ReadWriteShardingConnectionStringResolver.cs
index 4d88ac65..51a3fd3a 100644
--- a/src/ShardingCore/Sharding/ReadWriteConfigurations/ReadWriteShardingConnectionStringResolver.cs
+++ b/src/ShardingCore/Sharding/ReadWriteConfigurations/ReadWriteShardingConnectionStringResolver.cs
@@ -49,15 +49,20 @@ namespace ShardingCore.Sharding.ReadWriteConfigurations
                 if (_readWriteOptions.ReadStrategy == ReadStrategyEnum.Loop)
                 {
                     connector= new ReadWriteLoopConnector(dataSourceName, new List<string> { connectionString });
+                    _connectors.TryAdd(dataSourceName, connector);
+                    return true;
                 }
                 else if (_readWriteOptions.ReadStrategy == ReadStrategyEnum.Random)
                 {
-                    connector= new ReadWriteLoopConnector(dataSourceName, new List<string> { connectionString });
+                    connector= new ReadWriteRandomConnector(dataSourceName, new List<string> { connectionString });
+                    _connectors.TryAdd(dataSourceName, connector);
+                    return true;
+                }
+                else
+                {
+                    throw new ShardingCoreInvalidOperationException(
+                        $"unknown read write strategy:[{_readWriteOptions.ReadStrategy}]");
                 }
-
-                throw new ShardingCoreInvalidOperationException(
-                    $"unknown read write strategy:[{_readWriteOptions.ReadStrategy}]");
-
             }
             else
             {
diff --git a/src/ShardingCore/ShardingCore.csproj b/src/ShardingCore/ShardingCore.csproj
index d828a331..3a8001bb 100644
--- a/src/ShardingCore/ShardingCore.csproj
+++ b/src/ShardingCore/ShardingCore.csproj
@@ -4,7 +4,7 @@
         <Version>$(EFCORE6)</Version>
         <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
         <DefineConstants>TRACE;DEBUG;EFCORE6;</DefineConstants>
-        <LangVersion>10.0</LangVersion>
+        <LangVersion>9.0</LangVersion>
 	    <RepositoryUrl>https://github.com/xuejmnet/sharding-core</RepositoryUrl>
 	    <PackageIcon>logo.png</PackageIcon>
     </PropertyGroup>
diff --git a/src2x/ShardingCore.2x/ShardingCore.2x.csproj b/src2x/ShardingCore.2x/ShardingCore.2x.csproj
index 7ea4db43..e751b7e1 100644
--- a/src2x/ShardingCore.2x/ShardingCore.2x.csproj
+++ b/src2x/ShardingCore.2x/ShardingCore.2x.csproj
@@ -6,7 +6,7 @@
 		<Version>$(EFCORE2)</Version>
 		<GenerateAssemblyInfo>true</GenerateAssemblyInfo>
 		<DefineConstants>TRACE;DEBUG;EFCORE2;</DefineConstants>
-		<LangVersion>10.0</LangVersion>
+		<LangVersion>9.0</LangVersion>
 		<AssemblyName>ShardingCore</AssemblyName>
 		<RootNamespace>ShardingCore</RootNamespace>
 		<RepositoryUrl>https://github.com/xuejmnet/sharding-core</RepositoryUrl>
diff --git a/src3x/ShardingCore.3x/ShardingCore.3x.csproj b/src3x/ShardingCore.3x/ShardingCore.3x.csproj
index 2a2341b9..9b8dd757 100644
--- a/src3x/ShardingCore.3x/ShardingCore.3x.csproj
+++ b/src3x/ShardingCore.3x/ShardingCore.3x.csproj
@@ -6,7 +6,7 @@
         <Version>$(EFCORE3)</Version>
         <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
         <DefineConstants>TRACE;DEBUG;EFCORE3;</DefineConstants>
-	    <LangVersion>10.0</LangVersion>
+		<LangVersion>9.0</LangVersion>
         <AssemblyName>ShardingCore</AssemblyName>
         <RootNamespace>ShardingCore</RootNamespace>
 	    <RepositoryUrl>https://github.com/xuejmnet/sharding-core</RepositoryUrl>
diff --git a/src5x/ShardingCore.5x/ShardingCore.5x.csproj b/src5x/ShardingCore.5x/ShardingCore.5x.csproj
index 9f0eb5cb..f0398d0b 100644
--- a/src5x/ShardingCore.5x/ShardingCore.5x.csproj
+++ b/src5x/ShardingCore.5x/ShardingCore.5x.csproj
@@ -5,7 +5,7 @@
 		<Version>$(EFCORE5)</Version>
 		<GenerateAssemblyInfo>true</GenerateAssemblyInfo>
 		<DefineConstants>TRACE;DEBUG;EFCORE5;</DefineConstants>
-		<LangVersion>10.0</LangVersion>
+		<LangVersion>9.0</LangVersion>
 		<AssemblyName>ShardingCore</AssemblyName>
 		<RootNamespace>ShardingCore</RootNamespace>
 		<RepositoryUrl>https://github.com/xuejmnet/sharding-core</RepositoryUrl>