diff --git a/cpp/tglog.cc b/cpp/tglog.cc
new file mode 100644
index 0000000..e9b30f5
--- /dev/null
+++ b/cpp/tglog.cc
@@ -0,0 +1,192 @@
+#include <unistd.h>
+#include <thread>
+#include <mutex>
+#include <condition_variable>
+
+#include <a8/a8.h>
+#include <a8/mutable_xobject.h>
+#include "tglog.h"
+
+static const char* const TGLOG_ROOT = "/data/logs/%s/upload";
+static const char* const POLY_TGLOG_ROOT = "/data/logs/%s/%s/upload";
+static const char* const TGLOG_FILENAME = "log_$pid_%Y%m%d%H.log";
+
+struct TGLogMsgNode
+{
+    int game_id = 0;
+    std::string jsonstr;
+    TGLogMsgNode* next = nullptr;
+};
+
+struct TGLogImpl
+{
+    std::string filename_fmt;
+    std::string project_name;
+    bool is_poly_log = false;
+
+    std::thread* save_thread = nullptr;
+    bool save_thread_shutdown = false;
+
+    std::mutex msg_mutex;
+    TGLogMsgNode* top_node = nullptr;
+    TGLogMsgNode* bot_node = nullptr;
+    TGLogMsgNode* work_node = nullptr;
+    std::mutex *save_cond_mutex = nullptr;
+    std::condition_variable *save_cond = nullptr;
+
+    TGLogImpl()
+    {
+        save_cond_mutex = new std::mutex();
+        save_cond = new std::condition_variable();
+    }
+
+    virtual ~TGLogImpl()
+    {
+        delete save_cond_mutex;
+        save_cond_mutex = nullptr;
+        delete save_cond;
+        save_cond = nullptr;
+    }
+
+    std::string GetCurrentFileName()
+    {
+        time_t nowtime = time(nullptr);
+        struct tm tm_nowtime = {0};
+        localtime_r(&nowtime, &tm_nowtime);
+
+        char szfilename[256];
+        szfilename[0] = '\0';
+        strftime(szfilename, a8::ArraySize(szfilename), filename_fmt.c_str(), &tm_nowtime);
+        std::string filename((char*)szfilename);
+        return filename;
+    }
+};
+
+void TGLog::Init()
+{
+    impl_ = new TGLogImpl();
+    impl_->filename_fmt = TGLOG_FILENAME;
+    a8::ReplaceString(impl_->filename_fmt, "$pid", a8::XValue(getpid()));
+
+    impl_->save_thread_shutdown = false;
+    impl_->save_thread = new std::thread(&TGLog::SaveToFileThreadProc, this);
+}
+
+void TGLog::UnInit()
+{
+    delete impl_;
+    impl_ = nullptr;
+}
+
+void TGLog::SetProjectInfo(const std::string& project_name, bool is_poly_log)
+{
+    project_name_ = project_name;
+    is_poly_log_ = is_poly_log;
+}
+
+void TGLog::AddTrackLog(int game_id, const std::string& accountid, unsigned long ip_saddr,
+                        int logclass1, int logclass2, a8::XObject* prop)
+{
+    std::string logtime_str;
+    {
+        time_t nowtime = time(nullptr);
+        struct tm tm_time = {0};
+        localtime_r(&nowtime, &tm_time);
+
+        char buff[256];
+        strftime(buff, a8::ArraySize(buff), "%F %T", &tm_time);
+        logtime_str.append((char*)buff);
+    }
+    a8::MutableXObject* xobj = a8::MutableXObject::NewObject();
+
+    xobj->SetVal("#account_id", accountid);
+    xobj->SetVal("#type", "track");
+    xobj->SetVal("#time", logtime_str);
+    xobj->SetVal("#ip", a8::GetIpAddress(ip_saddr));
+    xobj->SetVal("#event_name", a8::Format("event_%d_%d", {logclass1, logclass2}));
+
+    xobj->SetVal("properties", *prop);
+    {
+        TGLogMsgNode *p = new TGLogMsgNode();
+        p->game_id = game_id;
+        xobj->ToJsonStr(p->jsonstr);
+        impl_->msg_mutex.lock();
+        if (impl_->bot_node) {
+            impl_->bot_node->next = p;
+            impl_->bot_node = p;
+        } else {
+            impl_->top_node = p;
+            impl_->bot_node = p;
+        }
+        impl_->msg_mutex.unlock();
+        {
+            std::unique_lock<std::mutex> lk(*impl_->save_cond_mutex);
+            impl_->save_cond->notify_all();
+        }
+    }
+}
+
+void TGLog::SaveToFileThreadProc()
+{
+    auto GetLogFile = [this] (std::map<int, FILE*> opened_log_files_hash, int game_id, const std::string& filename) -> FILE*
+                      {
+                          auto itr = opened_log_files_hash.find(game_id);
+                          if (itr == opened_log_files_hash.end()) {
+                              std::string log_dir;
+                              if (impl_->is_poly_log) {
+                                  log_dir = a8::Format(POLY_TGLOG_ROOT, {impl_->project_name, impl_->work_node->game_id});
+                              } else {
+                                  log_dir = a8::Format(TGLOG_ROOT, {impl_->project_name});
+                              }
+                              a8::ForceCreateDir(log_dir);
+                              FILE* logfile = fopen((log_dir + filename).c_str(), "a+");
+                              if (logfile) {
+                                  opened_log_files_hash[game_id] = logfile;
+                              }
+                              return logfile;
+                          } else {
+                              return itr->second;
+                          }
+                      };
+
+    while (!impl_->save_thread_shutdown) {
+        if (!impl_->work_node && impl_->top_node) {
+            impl_->msg_mutex.lock();
+            impl_->work_node = impl_->top_node;
+            impl_->top_node = nullptr;
+            impl_->bot_node = nullptr;
+            impl_->msg_mutex.unlock();
+        }
+
+        if (impl_->work_node) {
+            std::string filename = impl_->GetCurrentFileName();
+            std::map<int, FILE*> opened_log_files_hash;
+
+            while (impl_->work_node) {
+                TGLogMsgNode* nextnode = impl_->work_node->next;
+                TGLogMsgNode* work_node = impl_->work_node;
+
+                FILE* logfile = GetLogFile(opened_log_files_hash, work_node->game_id, filename);
+                if (logfile) {
+                    work_node->jsonstr.push_back('\n');
+                    fwrite(work_node->jsonstr.c_str(), 1, work_node->jsonstr.size(), logfile);
+                }
+                delete work_node;
+
+                impl_->work_node = nextnode;
+            }
+
+            for (auto& pair : opened_log_files_hash) {
+                if (pair.second) {
+                    fclose(pair.second);
+                }
+            }
+        }
+
+        {
+            std::unique_lock<std::mutex> lk(*impl_->save_cond_mutex);
+            impl_->save_cond->wait_for(lk, std::chrono::seconds(10));
+        }
+    }
+
+}
diff --git a/cpp/tglog.h b/cpp/tglog.h
new file mode 100644
index 0000000..e0e3d06
--- /dev/null
+++ b/cpp/tglog.h
@@ -0,0 +1,25 @@
+#pragma once
+
+struct TGLogImpl;
+class TGLog : public a8::Singleton<TGLog>
+{
+ private:
+    TGLog() {};
+    friend class a8::Singleton<TGLog>;
+
+public:
+    void Init();
+    void UnInit();
+
+    void SetProjectInfo(const std::string& project_name, bool is_poly_log);
+    void AddTrackLog(int game_id, const std::string& accountid, unsigned long ip_saddr,
+                     int logclass1, int logclass2, a8::XObject* prop);
+
+ private:
+    void SaveToFileThreadProc();
+
+ private:
+    std::string project_name_;
+    bool is_poly_log_ = false;
+    TGLogImpl* impl_ = nullptr;
+};
diff --git a/cpp/utils.cc b/cpp/utils.cc
index 0862657..84319c6 100644
--- a/cpp/utils.cc
+++ b/cpp/utils.cc
@@ -117,3 +117,61 @@ void InitMysqlConnection(a8::mysql::Query* query)
         query->Next();
     }
 }
+
+bool CheckRegisterTimeInSessionId(const std::string& accountid, const std::string& sessionid)
+{
+    std::vector<std::string> strings;
+    a8::Split(sessionid, strings, '_');
+    if (strings.size() < 4) {
+        return false;
+    }
+    return true;
+}
+
+time_t ExtractRegisterTimeFromSessionId(const std::string& sessionid)
+{
+    std::vector<std::string> strings;
+    a8::Split(sessionid, strings, '_');
+    if (strings.size() < 4) {
+        return false;
+    }
+    std::string session_createtime = strings[0];
+    std::string account_registertime = strings[1];
+    std::string md51 = strings[2];
+    std::string md52 = strings[3];
+    return a8::XValue(account_registertime);
+}
+
+bool IsValidSessionId(const std::string& accountid, const std::string& sessionid)
+{
+    std::vector<std::string> strings;
+    a8::Split(sessionid, strings, '_');
+    if (strings.size() < 4) {
+        return false;
+    }
+    return true;
+}
+
+int ExtractGameIdFromAccountId(const std::string& accountid)
+{
+    std::vector<std::string> strings;
+    a8::Split(accountid, strings, '_');
+    if (strings.size() < 2) {
+        return false;
+    }
+    std::string gameid = strings[0];
+    std::string channelid = strings[1];
+    return a8::XValue(gameid);
+}
+
+int ExtractChannelIdFromAccountId(const std::string& accountid)
+{
+    std::vector<std::string> strings;
+    a8::Split(accountid, strings, '_');
+    if (strings.size() < 2) {
+        return false;
+    }
+    std::string gameid = strings[0];
+    std::string channelid = strings[1];
+    return a8::XValue(channelid);
+}
diff --git a/cpp/utils.h b/cpp/utils.h
index 55b5caf..3372c96 100644
--- a/cpp/utils.h
+++ b/cpp/utils.h
@@ -76,3 +76,9 @@ static void SetToRepeatedField(const T1& t1, T2& t2)
 }
 
 void InitMysqlConnection(a8::mysql::Query* query);
+
+bool CheckRegisterTimeInSessionId(const std::string& accountid, const std::string& sessionid);
+time_t ExtractRegisterTimeFromSessionId(const std::string& sessionid);
+bool IsValidSessionId(const std::string& accountid, const std::string& sessionid);
+int ExtractGameIdFromAccountId(const std::string& accountid);
+int ExtractChannelIdFromAccountId(const std::string& accountid);