diff --git a/config.json.example b/config.json.example
index 81c552e9..01da8b67 100644
--- a/config.json.example
+++ b/config.json.example
@@ -46,10 +46,10 @@
     //Load_dynamic_views: false by default, when set to true, drogon will
     //compile and load dynamically "CSP View Files" in directories defined
     //by "dynamic_views_path"
-    "load_dynamic_views":true,
+    //"load_dynamic_views":true,
     //dynamic_views_path: if the path isn't prefixed with / or ./,
     //it will be relative path of document_root path
-    "dynamic_views_path":["./views"],
+    //"dynamic_views_path":["./views"],
     //log:set log output,drogon output logs to stdout by default
     "log":{
       //log_path:log file path,empty by default,in which case,log will output to the stdout
diff --git a/lib/inc/drogon/CacheMap.h b/lib/inc/drogon/CacheMap.h
index 8ba53112..45ee0577 100755
--- a/lib/inc/drogon/CacheMap.h
+++ b/lib/inc/drogon/CacheMap.h
@@ -30,9 +30,11 @@
 
 
 #define WHEELS_NUM 4
-#define BUCKET_NUM_PER_WHEEL 100
+#define BUCKET_NUM_PER_WHEEL 200
 #define TICK_INTERVAL 1.0
 
+//Four wheels with 200 buckets per wheel means the cache map can work with
+//a timeout up to 200^4 seconds,about 50 years;
 
 namespace drogon
 {
@@ -69,6 +71,8 @@ public:
     /// number of wheels
     /// @param bucketsNumPerWheel
     /// buckets number per wheel
+    /// The max delay of the CacheMap is about tickInterval*(bucketsNumPerWheel^wheelsNum) seconds.
+
     CacheMap(trantor::EventLoop *loop,
              float tickInterval=TICK_INTERVAL,
              size_t wheelsNum=WHEELS_NUM,
@@ -119,6 +123,10 @@ public:
         std::function<void()> _timeoutCallback;
         WeakCallbackEntryPtr _weakEntryPtr;
     }MapValue;
+
+    //If timeout>0,the value will be erased
+    //within the 'timeout' seconds after the last access
+
     void insert(const T1& key,T2&& value,size_t timeout=0,std::function<void()> timeoutCallback=std::function<void()>())
     {
         if(timeout>0)
diff --git a/lib/src/SharedLibManager.cc b/lib/src/SharedLibManager.cc
index 9d5026e9..5fa7e9aa 100755
--- a/lib/src/SharedLibManager.cc
+++ b/lib/src/SharedLibManager.cc
@@ -30,8 +30,8 @@ static void forEachFileIn(const std::string &path,const std::function<void (cons
     /* open dirent directory */
     if((dp = opendir(path.c_str())) == NULL)
     {
-        perror("opendir:");
-        std::cerr<<"path:"<<path<<std::endl;
+        //perror("opendir:");
+        LOG_ERROR<<"can't open dir,path:"<<path;
         return;
     }
 
diff --git a/tests/CacheMapTest.cc b/tests/CacheMapTest.cc
index ed73fd47..6f42d012 100755
--- a/tests/CacheMapTest.cc
+++ b/tests/CacheMapTest.cc
@@ -9,10 +9,12 @@
 
 int main()
 {
+    trantor::Logger::setLogLevel(trantor::Logger::TRACE);
     trantor::EventLoopThread loopThread;
     loopThread.run();
+
     drogon::CacheMap<std::string,std::string> cache(loopThread.getLoop(),1,3,3);
-    sleep(15);
+    sleep(3);
     for(int i=0;i<40;i++)
     {
         cache.insert(drogon::formattedString("aaa%d",i),"hehe",i,[=](){
@@ -86,7 +88,6 @@ int main()
     });
     thread1.join();
 
-    loopThread.stop();
 
     getchar();
 }
\ No newline at end of file
diff --git a/trantor b/trantor
index 5555d02c..c488f2a7 160000
--- a/trantor
+++ b/trantor
@@ -1 +1 @@
-Subproject commit 5555d02c1a33b8597d35ca56a614d9ecafdc41ca
+Subproject commit c488f2a711d77aa972ed0cf7262e0c824410ec59