diff --git a/README.md b/README.md
index cab431fc9..f293c61f0 100755
--- a/README.md
+++ b/README.md
@@ -562,6 +562,7 @@ Supported operating systems and hardware:
 
 ### SRS 2.0 history
 
+* v2.0, 2015-03-31, support server cycle handler. 2.0.153.
 * v2.0, 2015-03-31, support on_hls for http hooks. 2.0.152.
 * v2.0, 2015-03-31, enhanced hls, support deviation for duration. 2.0.151.
 * v2.0, 2015-03-30, for [#351](https://github.com/winlinvip/simple-rtmp-server/issues/351), support config the m3u8/ts path for hls. 2.0.149.
diff --git a/trunk/configure b/trunk/configure
index 3169f954e..273fe6a53 100755
--- a/trunk/configure
+++ b/trunk/configure
@@ -61,15 +61,16 @@ if [ $SRS_UTEST = YES ]; then SrsUtestMakeEntry="(cd ${SRS_OBJS_DIR}/utest; \$(M
 # where srs module is a dir which contains a config file.
 SRS_MODULES=()
 __mfiles=`find modules -name "config"` && for __mfile in $__mfiles; do
-    SRS_MODULES+="`dirname $__mfile`"
+    SRS_MODULES+=("`dirname $__mfile`")
 done
 
 # variables for makefile for all modules.
 __mphonys="" && __mdefaults="" && __mcleanups=""
 # add each modules for application
-for SRS_MODULE in $SRS_MODULES; do
+for SRS_MODULE in ${SRS_MODULES[*]}; do
     echo "install module at: $SRS_MODULE"
     . $SRS_MODULE/config
+    if [[ 0 -eq ${#SRS_MODULE_MAIN[@]} ]]; then continue; fi
     __mphonys="$__mphonys $SRS_MODULE_NAME"
     __mdefaults="$__mdefaults $SRS_MODULE_NAME"
     __mcleanups="$__mcleanups $SRS_MODULE_NAME"
@@ -177,9 +178,9 @@ if [ $SRS_EXPORT_LIBRTMP_PROJECT = NO ]; then
             "srs_app_mpegts_udp" "srs_app_rtsp" "srs_app_listener" "srs_app_async_call")
     DEFINES=""
     # add each modules for app
-    for SRS_MODULE in $SRS_MODULES; do
+    for SRS_MODULE in ${SRS_MODULES[*]}; do
         . $SRS_MODULE/config
-        MODULE_FILES+=($SRS_MODULE_APP)
+        MODULE_FILES+=("${SRS_MODULE_APP[*]}")
         DEFINES="${DEFINES} ${SRS_MODULE_DEFINES}"
     done
     APP_INCS="src/app"; MODULE_DIR=${APP_INCS} . auto/modules.sh
@@ -201,9 +202,9 @@ if [ $SRS_EXPORT_LIBRTMP_PROJECT = NO ]; then
     ModuleLibIncs=(${LibSTRoot} ${SRS_OBJS_DIR} ${LibGperfRoot} ${LibHttpParserRoot})
     MODULE_FILES=("srs_main_server")
     # add each modules for main
-    for SRS_MODULE in $SRS_MODULES; do
+    for SRS_MODULE in ${SRS_MODULES[*]}; do
         . $SRS_MODULE/config
-        MODULE_FILES+=($SRS_MODULE_MAIN)
+        MODULE_FILES+=("${SRS_MODULE_MAIN[*]}")
     done
     MAIN_INCS="src/main"; MODULE_DIR=${MAIN_INCS} . auto/modules.sh
     MAIN_OBJS="${MODULE_OBJS[@]}"
@@ -218,9 +219,9 @@ if [ $SRS_EXPORT_LIBRTMP_PROJECT = NO ]; then
     # all main entrances
     MAIN_ENTRANCES=("srs_main_server")
     # add each modules for main
-    for SRS_MODULE in $SRS_MODULES; do
+    for SRS_MODULE in ${SRS_MODULES[*]}; do
         . $SRS_MODULE/config
-        MAIN_ENTRANCES+=($SRS_MODULE_MAIN)
+        MAIN_ENTRANCES+=("${SRS_MODULE_MAIN[*]}")
     done
     # 
     # all depends libraries
@@ -232,8 +233,10 @@ if [ $SRS_EXPORT_LIBRTMP_PROJECT = NO ]; then
     # srs: srs(simple rtmp server) over st(state-threads)
     BUILD_KEY="srs" APP_MAIN="srs_main_server" APP_NAME="srs" . auto/apps.sh
     # add each modules for application
-    for SRS_MODULE in $SRS_MODULES; do
+    for SRS_MODULE in ${SRS_MODULES[*]}; do
         . $SRS_MODULE/config
+        # no SRS_MODULE_MAIN 
+        if [[ 0 -eq ${#SRS_MODULE_MAIN[@]} ]]; then continue; fi
         BUILD_KEY="$SRS_MODULE_NAME" APP_MAIN="$SRS_MODULE_MAIN" APP_NAME="$SRS_MODULE_NAME" . auto/apps.sh
     done
 fi
@@ -340,7 +343,7 @@ server: _prepare_dir
 END
 fi
 # generate all modules entry
-for SRS_MODULE in $SRS_MODULES; do
+for SRS_MODULE in ${SRS_MODULES[*]}; do
     . $SRS_MODULE/config
     # if export librtmp, donot build the bravo-ingest.
     if [ $SRS_EXPORT_LIBRTMP_PROJECT != NO ]; then
@@ -596,7 +599,7 @@ if [ $SRS_EXPORT_LIBRTMP_PROJECT = NO ]; then
         echo -e "${GREEN}note: mips-ubuntu12 for srs are not builded${BLACK}"
     fi
     # add each modules for application
-    for SRS_MODULE in $SRS_MODULES; do
+    for SRS_MODULE in ${SRS_MODULES[*]}; do
         echo -e "${GREEN}module: $SRS_MODULE${BLACK}"
     done
 fi
diff --git a/trunk/src/app/srs_app_json.cpp b/trunk/src/app/srs_app_json.cpp
index cd1b9aaa8..76a1341c3 100644
--- a/trunk/src/app/srs_app_json.cpp
+++ b/trunk/src/app/srs_app_json.cpp
@@ -457,6 +457,21 @@ SrsJsonAny* SrsJsonObject::ensure_property_string(string name)
     return prop;
 }
 
+SrsJsonAny* SrsJsonObject::ensure_property_integer(string name)
+{
+    SrsJsonAny* prop = get_property(name);
+    
+    if (!prop) {
+        return NULL;
+    }
+    
+    if (!prop->is_integer()) {
+        return NULL;
+    }
+    
+    return prop;
+}
+
 SrsJsonAny* SrsJsonObject::ensure_property_boolean(string name)
 {
     SrsJsonAny* prop = get_property(name);
diff --git a/trunk/src/app/srs_app_json.hpp b/trunk/src/app/srs_app_json.hpp
index bc36a7935..d94f86daa 100644
--- a/trunk/src/app/srs_app_json.hpp
+++ b/trunk/src/app/srs_app_json.hpp
@@ -149,6 +149,7 @@ public:
     virtual void set(std::string key, SrsJsonAny* value);
     virtual SrsJsonAny* get_property(std::string name);
     virtual SrsJsonAny* ensure_property_string(std::string name);
+    virtual SrsJsonAny* ensure_property_integer(std::string name);
     virtual SrsJsonAny* ensure_property_boolean(std::string name);
 };
 
diff --git a/trunk/src/app/srs_app_reload.cpp b/trunk/src/app/srs_app_reload.cpp
index 85d368bfc..cd43faaeb 100644
--- a/trunk/src/app/srs_app_reload.cpp
+++ b/trunk/src/app/srs_app_reload.cpp
@@ -190,4 +190,8 @@ int ISrsReloadHandler::on_reload_ingest_updated(string /*vhost*/, string /*inges
     return ERROR_SUCCESS;
 }
 
+int ISrsReloadHandler::on_reload_user_info()
+{
+    return ERROR_SUCCESS;
+}
 
diff --git a/trunk/src/app/srs_app_reload.hpp b/trunk/src/app/srs_app_reload.hpp
index 39e3b6538..01068a7ca 100644
--- a/trunk/src/app/srs_app_reload.hpp
+++ b/trunk/src/app/srs_app_reload.hpp
@@ -75,6 +75,7 @@ public:
     virtual int on_reload_ingest_removed(std::string vhost, std::string ingest_id);
     virtual int on_reload_ingest_added(std::string vhost, std::string ingest_id);
     virtual int on_reload_ingest_updated(std::string vhost, std::string ingest_id);
+    virtual int on_reload_user_info();
 };
 
 #endif
diff --git a/trunk/src/app/srs_app_server.cpp b/trunk/src/app/srs_app_server.cpp
index a8bef6452..84cc1b350 100644
--- a/trunk/src/app/srs_app_server.cpp
+++ b/trunk/src/app/srs_app_server.cpp
@@ -389,6 +389,14 @@ void SrsSignalManager::sig_catcher(int signo)
     errno = err;
 }
 
+ISrsServerCycle::ISrsServerCycle()
+{
+}
+
+ISrsServerCycle::~ISrsServerCycle()
+{
+}
+
 SrsServer::SrsServer()
 {
     signal_reload = false;
@@ -397,6 +405,8 @@ SrsServer::SrsServer()
     
     signal_manager = NULL;
     
+    handler = NULL;
+    
     // donot new object in constructor,
     // for some global instance is not ready now,
     // new these objects in initialize instead.
@@ -456,6 +466,8 @@ void SrsServer::destroy()
     
     srs_freep(signal_manager);
     
+    srs_freep(handler);
+    
     // @remark never destroy the connections, 
     // for it's still alive.
 
@@ -464,7 +476,7 @@ void SrsServer::destroy()
     // and segment fault.
 }
 
-int SrsServer::initialize()
+int SrsServer::initialize(ISrsServerCycle* cycle_handler)
 {
     int ret = ERROR_SUCCESS;
     
@@ -480,6 +492,11 @@ int SrsServer::initialize()
     srs_assert(!signal_manager);
     signal_manager = new SrsSignalManager(this);
     
+    handler = cycle_handler;
+    if(handler && (ret = handler->initialize()) != ERROR_SUCCESS){
+        return ret;
+    }
+    
 #ifdef SRS_AUTO_HTTP_API
     if ((ret = http_api_mux->initialize()) != ERROR_SUCCESS) {
         return ret;
@@ -795,6 +812,11 @@ int SrsServer::do_cycle()
     
     // the deamon thread, update the time cache
     while (true) {
+        if(handler && (ret = handler->on_cycle(conns.size())) != ERROR_SUCCESS){
+            srs_error("cycle handle failed. ret=%d", ret);
+            return ret;
+        }
+            
         // the interval in config.
         int heartbeat_max_resolution = (int)(_srs_config->get_heartbeat_interval() / SRS_SYS_CYCLE_INTERVAL);
         
diff --git a/trunk/src/app/srs_app_server.hpp b/trunk/src/app/srs_app_server.hpp
index f6279e608..45857b714 100644
--- a/trunk/src/app/srs_app_server.hpp
+++ b/trunk/src/app/srs_app_server.hpp
@@ -170,6 +170,25 @@ private:
     static void sig_catcher(int signo);
 };
 
+/**
+* the handler to the handle cycle in SRS RTMP server.
+*/
+class ISrsServerCycle
+{
+public:
+    ISrsServerCycle();
+    virtual ~ISrsServerCycle();
+public: 
+    /**
+    * initialize the cycle handler.
+    */
+    virtual int initialize() = 0;
+    /**
+    * do on_cycle while server doing cycle.
+    */
+    virtual int on_cycle(int connections) = 0;
+};
+
 /**
 * SRS RTMP server, initialize and listen, 
 * start connection service thread, destroy client.
@@ -211,6 +230,10 @@ private:
     */
     SrsSignalManager* signal_manager;
     /**
+    * handle in server cycle.
+    */
+    ISrsServerCycle* handler;
+    /**
     * user send the signal, convert to variable.
     */
     bool signal_reload;
@@ -227,7 +250,7 @@ public:
     virtual void destroy();
 // server startup workflow, @see run_master()
 public:
-    virtual int initialize();
+    virtual int initialize(ISrsServerCycle* cycle_handler);
     virtual int initialize_signal();
     virtual int acquire_pid_file();
     virtual int initialize_st();
diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index b79c0bc2f..fd3c06908 100644
--- a/trunk/src/core/srs_core.hpp
+++ b/trunk/src/core/srs_core.hpp
@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR       2
 #define VERSION_MINOR       0
-#define VERSION_REVISION    152
+#define VERSION_REVISION    153
 
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"
diff --git a/trunk/src/main/srs_main_server.cpp b/trunk/src/main/srs_main_server.cpp
index 2d49cc096..44f66bd57 100644
--- a/trunk/src/main/srs_main_server.cpp
+++ b/trunk/src/main/srs_main_server.cpp
@@ -288,7 +288,7 @@ int main(int argc, char** argv)
     * and use initialize to create members, set hooks for instance the reload handler,
     * all initialize will done in this stage.
     */
-    if ((ret = _srs_server->initialize()) != ERROR_SUCCESS) {
+    if ((ret = _srs_server->initialize(NULL)) != ERROR_SUCCESS) {
         return ret;
     }