diff --git a/OS.Common/Modules/AsynModule/AsynUtil.cs b/OS.Common/Modules/AsynModule/AsynUtil.cs
index 112da7d..b6cdbda 100644
--- a/OS.Common/Modules/AsynModule/AsynUtil.cs
+++ b/OS.Common/Modules/AsynModule/AsynUtil.cs
@@ -1,5 +1,5 @@
 using System;
-using System.Collections.Generic;
+using System.Collections.Concurrent;
 
 namespace OS.Common.Modules.AsynModule
 {
@@ -8,7 +8,7 @@ namespace OS.Common.Modules.AsynModule
     /// </summary>
     public static class AsynUtil
     {
-        private static IDictionary<string, IAsynBlock> _asynDirs = new Dictionary<string, IAsynBlock>();
+        private static readonly ConcurrentDictionary<string, IAsynBlock> _asynDirs = new ConcurrentDictionary<string, IAsynBlock>();//Dictionary<string, IAsynBlock>();
         /// <summary>
         /// 通过模块名称获取异步处理模块实例
         /// </summary>
@@ -21,11 +21,10 @@ namespace OS.Common.Modules.AsynModule
             
             if (_asynDirs.ContainsKey(asynModule))
                 return _asynDirs[asynModule];
-            
 
             var asyn = OsConfig.Provider.GetAsynBlock(asynModule) ?? new AsynBlock();
-            _asynDirs.Add(asynModule, asyn);
-            
+            _asynDirs.TryAdd(asynModule,asyn);
+
             return asyn;
         }
 
diff --git a/OS.Common/Modules/CacheModule/CacheUtil.cs b/OS.Common/Modules/CacheModule/CacheUtil.cs
index 6fa33fd..4291388 100644
--- a/OS.Common/Modules/CacheModule/CacheUtil.cs
+++ b/OS.Common/Modules/CacheModule/CacheUtil.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Concurrent;
 using System.Collections.Generic;
 
 namespace OS.Common.Modules.CacheModule
@@ -8,7 +9,7 @@ namespace OS.Common.Modules.CacheModule
     /// </summary>
     public static class CacheUtil
     {
-        private static IDictionary<string ,ICache>  _cacheDirs=new Dictionary<string, ICache>();
+        private static readonly ConcurrentDictionary<string, ICache> _cacheDirs = new ConcurrentDictionary<string, ICache>();
 
         /// <summary>
         /// 通过模块名称获取
@@ -24,7 +25,7 @@ namespace OS.Common.Modules.CacheModule
                 return _cacheDirs[cacheModule];
 
             var cache = OsConfig.Provider.GetCache(cacheModule) ?? new Cache();
-            _cacheDirs.Add(cacheModule, cache);
+            _cacheDirs.TryAdd(cacheModule, cache);
 
             return cache;
         }
diff --git a/OS.Common/Modules/DirConfigModule/DirConfigUtil.cs b/OS.Common/Modules/DirConfigModule/DirConfigUtil.cs
index 6008582..2b016b3 100644
--- a/OS.Common/Modules/DirConfigModule/DirConfigUtil.cs
+++ b/OS.Common/Modules/DirConfigModule/DirConfigUtil.cs
@@ -1,4 +1,4 @@
-using System.Collections.Generic;
+using System.Collections.Concurrent;
 using OS.Common.ComModels;
 
 namespace OS.Common.Modules.DirConfigModule
@@ -8,7 +8,7 @@ namespace OS.Common.Modules.DirConfigModule
     /// </summary>
     public static class DirConfigUtil
     {
-        private static IDictionary<string, IDirConfig> _dirConfigDirs = new Dictionary<string, IDirConfig>();
+        private static readonly ConcurrentDictionary<string, IDirConfig> _dirConfigDirs = new ConcurrentDictionary<string, IDirConfig>();
 
         /// <summary>
         /// 通过模块名称获取
@@ -24,7 +24,7 @@ namespace OS.Common.Modules.DirConfigModule
                 return _dirConfigDirs[dirConfigModule];
 
             var dirConfig = OsConfig.Provider.GetDirConfig(dirConfigModule) ?? new DirConfig();
-            _dirConfigDirs.Add(dirConfigModule, dirConfig);
+            _dirConfigDirs.TryAdd(dirConfigModule, dirConfig);
 
             return dirConfig;
         }
diff --git a/OS.Common/Modules/LogModule/LogUtil.cs b/OS.Common/Modules/LogModule/LogUtil.cs
index 15611b8..43f8485 100644
--- a/OS.Common/Modules/LogModule/LogUtil.cs
+++ b/OS.Common/Modules/LogModule/LogUtil.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Concurrent;
 using System.Collections.Generic;
 using OS.Common.Modules.AsynModule;
 
@@ -98,12 +99,10 @@ namespace OS.Common.Modules.LogModule
             get; 
             set;
         }
-    
-
-        private static Dictionary<string, ILogWriter> _logDirs=
-            new Dictionary<string, ILogWriter>();
-     
 
+        private static readonly ConcurrentDictionary<string, ILogWriter> _logDirs =
+            new ConcurrentDictionary<string, ILogWriter>();
+        
         /// <summary>
         /// 通过模块名称获取日志模块实例
         /// </summary>
@@ -118,7 +117,7 @@ namespace OS.Common.Modules.LogModule
                 return _logDirs[logModule];
 
             var log = OsConfig.Provider.GetLogWrite(logModule) ?? new LogWriter();
-            _logDirs.Add(logModule, log);
+            _logDirs.TryAdd(logModule, log);
 
             return log;
         }
diff --git a/OS.Common/Modules/LogModule/LogWriter.cs b/OS.Common/Modules/LogModule/LogWriter.cs
index 920029f..3997bbd 100644
--- a/OS.Common/Modules/LogModule/LogWriter.cs
+++ b/OS.Common/Modules/LogModule/LogWriter.cs
@@ -7,7 +7,7 @@ namespace OS.Common.Modules.LogModule
     internal class LogWriter : ILogWriter
     {
         private readonly string _logBaseDirPath = null;
-        private const string logFormat = "{0:T}       Key:{1}   Detail:{2}";
+        private const string _logFormat = "{0:T}       Key:{1}   Detail:{2}";
 
         public LogWriter()
         {
@@ -39,7 +39,8 @@ namespace OS.Common.Modules.LogModule
 
                 using (StreamWriter sw = new StreamWriter(filePath, true, Encoding.Default))
                 {
-                    sw.WriteLine(format: logFormat, arg0: DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), arg1: info.MsgKey, arg2: info.Msg);
+                    // ReSharper disable once FormatStringProblem
+                    sw.WriteLine(format: _logFormat, arg0: DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), arg1: info.MsgKey, arg2: info.Msg);
                     sw.Close();
                 }
             }
diff --git a/OS.Common/OS.Common.csproj b/OS.Common/OS.Common.csproj
index d2bc5a8..6ba995f 100644
--- a/OS.Common/OS.Common.csproj
+++ b/OS.Common/OS.Common.csproj
@@ -9,7 +9,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>OS.Common</RootNamespace>
     <AssemblyName>OS.Common</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <TargetFrameworkProfile />
   </PropertyGroup>
diff --git a/OS.Common/OSConfig.cs b/OS.Common/OSConfig.cs
index 1a92cb3..4ce3c81 100644
--- a/OS.Common/OSConfig.cs
+++ b/OS.Common/OSConfig.cs
@@ -15,7 +15,7 @@ namespace OS.Common
         /// </summary>
         internal static ModuleBaseProvider Provider
         {
-            get { return _provider ?? new ModuleBaseProvider(); }
+            get { return _provider ?? (_provider = new ModuleBaseProvider()); }
         }
 
 
diff --git a/OS.Common/Properties/AssemblyInfo.cs b/OS.Common/Properties/AssemblyInfo.cs
index f0c62d2..d28dbe3 100644
--- a/OS.Common/Properties/AssemblyInfo.cs
+++ b/OS.Common/Properties/AssemblyInfo.cs
@@ -1,5 +1,4 @@
 using System.Reflection;
-using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
 // General Information about an assembly is controlled through the following 
@@ -32,5 +31,5 @@ using System.Runtime.InteropServices;
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.1.17.0")]
-[assembly: AssemblyFileVersion("1.1.17.0")]
+[assembly: AssemblyVersion("1.2.35.0")]
+[assembly: AssemblyFileVersion("1.2.35.0")]