diff --git a/include/GFModuleCommonUtils.hpp b/include/GFModuleCommonUtils.hpp
index 1d23d2d..d64f203 100644
--- a/include/GFModuleCommonUtils.hpp
+++ b/include/GFModuleCommonUtils.hpp
@@ -28,6 +28,9 @@
 
 #pragma once
 
+#include <GFSDKBasic.h>
+#include <GFSDKLog.h>
+#include <GFSDKModule.h>
 #include <GFSDKUI.h>
 #include <qsharedpointer.h>
 
@@ -35,10 +38,6 @@
 #include <QString>
 #include <cstring>
 
-#include "GFSDKBasic.h"
-#include "GFSDKLog.h"
-#include "GFSDKModule.h"
-
 #define DUP(v) GFModuleStrDup(v)
 #define UDUP(v) UnStrDup(v)
 #define QDUP(v) QStrDup(v)
diff --git a/src/m_key_server_sync/KeyServerSyncModule.cpp b/src/m_key_server_sync/KeyServerSyncModule.cpp
index 8455993..376bb08 100644
--- a/src/m_key_server_sync/KeyServerSyncModule.cpp
+++ b/src/m_key_server_sync/KeyServerSyncModule.cpp
@@ -30,6 +30,7 @@
 
 #include <QtCore>
 
+#include "GFModuleCommonUtils.hpp"
 #include "GFModuleDefine.h"
 #include "VKSInterface.h"
 
@@ -62,9 +63,9 @@ EXECUTE_MODULE() {
     FLOG_DEBUG("try to get key info of fingerprint: %1", fingerprint);
 
     auto* vks = new VKSInterface();
-    vks->GetByFingerprint(fingerprint);
     QObject::connect(vks, &VKSInterface::SignalKeyRetrieved,
                      QThread::currentThread(), [event](const QString& key) {
+                       // callback
                        CB(event, GFGetModuleID(),
                           {
                               {"ret", QString::number(0)},
@@ -86,6 +87,7 @@ EXECUTE_MODULE() {
                      });
     QObject::connect(vks, &VKSInterface::SignalKeyRetrieved, vks,
                      &VKSInterface::deleteLater);
+    vks->GetByFingerprint(fingerprint);
 
     return 0;
   }
@@ -97,9 +99,9 @@ EXECUTE_MODULE() {
     FLOG_DEBUG("try to get key info of key id: %1", key_id);
 
     auto* vks = new VKSInterface();
-    vks->GetByKeyId(key_id);
     QObject::connect(vks, &VKSInterface::SignalKeyRetrieved,
                      QThread::currentThread(), [event](const QString& key) {
+                       // callback
                        CB(event, GFGetModuleID(),
                           {
                               {"ret", QString::number(0)},
@@ -108,7 +110,6 @@ EXECUTE_MODULE() {
                      });
     QObject::connect(vks, &VKSInterface::SignalKeyRetrieved, vks,
                      &VKSInterface::deleteLater);
-
     QObject::connect(vks, &VKSInterface::SignalErrorOccurred,
                      QThread::currentThread(),
                      [event](const QString& error, const QString& data) {
@@ -121,6 +122,7 @@ EXECUTE_MODULE() {
                      });
     QObject::connect(vks, &VKSInterface::SignalKeyRetrieved, vks,
                      &VKSInterface::deleteLater);
+    vks->GetByKeyId(key_id);
 
     return 0;
   }
@@ -132,7 +134,6 @@ EXECUTE_MODULE() {
     FLOG_DEBUG("try to get key info of key id: %1", key_text);
 
     auto* vks = new VKSInterface();
-    vks->UploadKey(key_text);
     QObject::connect(
         vks, &VKSInterface::SignalKeyUploaded, QThread::currentThread(),
         [event](const QString& fpr, const QJsonObject& status,
@@ -147,7 +148,6 @@ EXECUTE_MODULE() {
         });
     QObject::connect(vks, &VKSInterface::SignalKeyRetrieved, vks,
                      &VKSInterface::deleteLater);
-
     QObject::connect(vks, &VKSInterface::SignalErrorOccurred,
                      QThread::currentThread(),
                      [event](const QString& error, const QString& data) {
@@ -160,11 +160,11 @@ EXECUTE_MODULE() {
                      });
     QObject::connect(vks, &VKSInterface::SignalKeyRetrieved, vks,
                      &VKSInterface::deleteLater);
-
+    vks->UploadKey(key_text);
     return 0;
   }
 
-  CB_SUCC(event);
+  CB_ERR(event, -1, "the type of this event is not supported");
 }
 END_EXECUTE_MODULE()
 
diff --git a/src/m_key_server_sync/VKSInterface.cpp b/src/m_key_server_sync/VKSInterface.cpp
index 9b4f4fd..eb16097 100644
--- a/src/m_key_server_sync/VKSInterface.cpp
+++ b/src/m_key_server_sync/VKSInterface.cpp
@@ -41,6 +41,9 @@
 #include <QUrlQuery>
 #include <utility>
 
+//
+#include <GFModuleCommonUtils.hpp>
+
 VKSInterface::VKSInterface(QString key_server, QObject* parent)
     : QObject(parent),
       target_key_server_(std::move(key_server)),
@@ -50,6 +53,15 @@ VKSInterface::VKSInterface(QString key_server, QObject* parent)
 }
 
 void VKSInterface::GetByFingerprint(const QString& fingerprint) {
+  // search cache by first
+  cache_key_ =
+      QString("module:key-server-sync:key-data:fpr:%1").arg(fingerprint);
+  auto value = UDUP(GFCacheGet(QDUP(cache_key_)));
+  if (!value.isEmpty()) {
+    emit SignalKeyRetrieved(value);
+    return;
+  }
+
   QUrl url(QString("%1/vks/v1/by-fingerprint/%2")
                .arg(target_key_server_)
                .arg(fingerprint));
@@ -57,8 +69,17 @@ void VKSInterface::GetByFingerprint(const QString& fingerprint) {
   network_manager_->get(request);
 }
 
-void VKSInterface::GetByKeyId(const QString& keyId) {
-  QUrl url(QString("%1/vks/v1/by-keyid/%2").arg(target_key_server_).arg(keyId));
+void VKSInterface::GetByKeyId(const QString& key_id) {
+  // search cache by first
+  cache_key_ = QString("module:key-server-sync:key-data:id:%1").arg(key_id);
+  auto value = UDUP(GFCacheGet(QDUP(cache_key_)));
+  if (!value.isEmpty()) {
+    emit SignalKeyRetrieved(value);
+    return;
+  }
+
+  QUrl url(
+      QString("%1/vks/v1/by-keyid/%2").arg(target_key_server_).arg(key_id));
   QNetworkRequest request(url);
   network_manager_->get(request);
 }
@@ -122,6 +143,7 @@ void VKSInterface::on_reply_finished(QNetworkReply* reply) {
   if (url.path().contains("/vks/v1/by-fingerprint") ||
       url.path().contains("/vks/v1/by-keyid") ||
       url.path().contains("/vks/v1/by-email")) {
+    GFCacheSaveWithTTL(QDUP(cache_key_), QDUP(QString(response_data)), 300);
     emit SignalKeyRetrieved(QString(response_data));
   } else if (url.path().contains("/vks/v1/upload")) {
     if (json_response.isObject()) {
diff --git a/src/m_key_server_sync/VKSInterface.h b/src/m_key_server_sync/VKSInterface.h
index e487ea4..67575db 100644
--- a/src/m_key_server_sync/VKSInterface.h
+++ b/src/m_key_server_sync/VKSInterface.h
@@ -58,6 +58,7 @@ class VKSInterface : public QObject {
   void on_reply_finished(QNetworkReply* reply);
 
  private:
+  QString cache_key_;
   QString target_key_server_;
   QNetworkAccessManager* network_manager_;
 };