diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6d9d45a..0942e78 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,9 @@ set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 message(STATUS "CXX Standard: ${CMAKE_CXX_STANDARD}")
 
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread -std=c++20")
 SET(ENABLE_MYSQL ON)
+
 SET(ENABLE_PG OFF)
 SET(ENABLE_SQLITE3 OFF)
 
@@ -82,8 +84,8 @@ if (ENABLE_MYSQL)
 endif()
 
 if (ENABLE_SQLITE3)
-	target_link_libraries(${PROJECT_NAME} sqlite3)
-	target_include_directories(${PROJECT_NAME} PRIVATE ormpp)
+	target_link_libraries(feather sqlite3 -ldl)
+	target_include_directories(feather PRIVATE ormpp)
 endif()
 
 if (ENABLE_PG)
diff --git a/cinatra b/cinatra
index 018a180..3fa0f9c 160000
--- a/cinatra
+++ b/cinatra
@@ -1 +1 @@
-Subproject commit 018a18056db4bc0c0e0c28feac59db650a484882
+Subproject commit 3fa0f9cc5433b22b002ca6babb5313dd125d2a6e
diff --git a/feather.h b/feather.h
index e655be6..4c41fc1 100644
--- a/feather.h
+++ b/feather.h
@@ -10,6 +10,14 @@
 #include "iguana/json_writer.hpp"
 #include "ormpp/connection_pool.hpp"
 #include "ormpp/dbng.hpp"
+#ifdef ORMPP_ENABLE_MYSQL
 #include "ormpp/mysql.hpp"
+#endif
+#ifdef ORMPP_ENABLE_SQLITE3
+#include "ormpp/sqlite.hpp"
+#endif
+#ifdef ORMPP_ENABLE_PG
+#include "ormpp/postgresql.hpp"
+#endif
 #include "util.hpp"
 #endif  // FEATHER_FEATHER_H
diff --git a/main.cpp b/main.cpp
index 38961da..132abc1 100644
--- a/main.cpp
+++ b/main.cpp
@@ -21,9 +21,18 @@ void init(const feather_cfg& cfg) {
   nanolog::Logger::initialize(nanolog::GuaranteedLogger(), cfg.log_path,
                               cfg.log_name, cfg.roll_file_size);
 
+#ifdef ORMPP_ENABLE_MYSQL
   dao_t<dbng<mysql>>::init(cfg.db_conn_num, cfg.db_ip.data(),
                            cfg.user_name.data(), cfg.pwd.data(),
                            cfg.db_name.data(), cfg.timeout);
+#endif
+#ifdef ORMPP_ENABLE_SQLITE3
+#endif
+#ifdef ORMPP_ENABLE_PG
+  dao_t<dbng<posgresql>>::init(cfg.db_conn_num, cfg.db_ip.data(),
+                               cfg.user_name.data(), cfg.pwd.data(),
+                               cfg.db_name.data(), cfg.timeout);
+#endif
 
   Dao dao;
   ormpp_auto_key key{SID(cncppcon2018_user::id)};
@@ -65,111 +74,95 @@ int main() {
 
   purecpp_controller purecpp_ctl;
   server.set_http_handler<GET, POST>(
-      "/login_page", &purecpp_controller::login_page, &purecpp_ctl);
+      "/login_page", &purecpp_controller::login_page, purecpp_ctl);
   server.set_http_handler<GET, POST>("/login", &purecpp_controller::login,
-                                     &purecpp_ctl,
-                                     {std::make_shared<check_login_input>()});
+                                     purecpp_ctl, check_login_input{});
   server.set_http_handler<GET, POST>(
-      "/sign_up_page", &purecpp_controller::sign_up_page, &purecpp_ctl);
+      "/sign_up_page", &purecpp_controller::sign_up_page, purecpp_ctl);
+  server.set_http_handler<GET, POST>("/sign_up", &purecpp_controller::sign_up,
+                                     purecpp_ctl, check_sign_out_input{});
+  server.set_http_handler<GET, POST>("/member_edit_page",
+                                     &purecpp_controller::member_edit_page,
+                                     purecpp_ctl, check_login{});
   server.set_http_handler<GET, POST>(
-      "/sign_up", &purecpp_controller::sign_up, &purecpp_ctl,
-      {std::make_shared<check_sign_out_input>()});
-  server.set_http_handler<GET, POST>(
-      "/member_edit_page", &purecpp_controller::member_edit_page, &purecpp_ctl,
-      {std::make_shared<check_login>()});
-  server.set_http_handler<GET, POST>(
-      "/member_edit", &purecpp_controller::member_edit, &purecpp_ctl,
-      {std::make_shared<check_login>(),
-       std::make_shared<check_member_edit_input>()});
+      "/member_edit", &purecpp_controller::member_edit, purecpp_ctl,
+      check_login{}, check_member_edit_input{});
   server.set_http_handler<GET, POST>("/quit", &purecpp_controller::quit,
-                                     &purecpp_ctl,
-                                     {std::make_shared<check_login>()});
+                                     purecpp_ctl, check_login{});
 
   server.set_http_handler<GET, POST>(
-      "/course_page", &purecpp_controller::course_page, &purecpp_ctl);
-  server.set_http_handler<GET, POST>(
-      "/book_course", &purecpp_controller::book_course, &purecpp_ctl,
-      {std::make_shared<check_join_cncppcon2018>()});
+      "/course_page", &purecpp_controller::course_page, purecpp_ctl);
+  server.set_http_handler<GET, POST>("/book_course",
+                                     &purecpp_controller::book_course,
+                                     purecpp_ctl, check_join_cncppcon2018{});
 
   server.set_http_handler<GET, POST>("/cncppcon_page2019",
                                      &purecpp_controller::cncppcon_page2019,
-                                     &purecpp_ctl);
+                                     purecpp_ctl);
   server.set_http_handler<GET, POST>("/cncppcon_page2019/dash",
                                      &purecpp_controller::cncppcon_page2019,
-                                     &purecpp_ctl);
+                                     purecpp_ctl);
   server.set_http_handler<GET, POST>("/cncppcon_page2019/apply/lecturer",
                                      &purecpp_controller::cncppcon_page2019,
-                                     &purecpp_ctl);
+                                     purecpp_ctl);
   server.set_http_handler<GET, POST>(
-      "/api/enrol/speaker", &purecpp_controller::enrol_speakers, &purecpp_ctl);
+      "/api/enrol/speaker", &purecpp_controller::enrol_speakers, purecpp_ctl);
 
   server.set_http_handler<GET, POST>(
       "/cncppcon_query_page2018", &purecpp_controller::cncppcon_query_page2018,
-      &purecpp_ctl);
-  server.set_http_handler<GET, POST>(
-      "/join_cncppcon2018", &purecpp_controller::join_cncppcon2018,
-      &purecpp_ctl, {std::make_shared<check_join_cncppcon2018>()});
-  server.set_http_handler<GET, POST>(
-      "/query_cncppcon2018", &purecpp_controller::query_cncppcon2018,
-      &purecpp_ctl, {std::make_shared<check_query_cncppcon2018>()});
+      purecpp_ctl);
+  server.set_http_handler<GET, POST>("/join_cncppcon2018",
+                                     &purecpp_controller::join_cncppcon2018,
+                                     purecpp_ctl, check_join_cncppcon2018{});
+  server.set_http_handler<GET, POST>("/query_cncppcon2018",
+                                     &purecpp_controller::query_cncppcon2018,
+                                     purecpp_ctl, check_query_cncppcon2018{});
   server.set_http_handler<GET, POST>("/register_user_group",
                                      &purecpp_controller::register_user_group,
-                                     &purecpp_ctl);
-  server.set_http_handler<GET, POST>(
-      "/join_user_group", &purecpp_controller::join_user_group, &purecpp_ctl,
-      {std::make_shared<check_join_cncppcon2018>()});
-
-  server.set_http_handler<GET>("/", &purecpp_controller::home, &purecpp_ctl,
-                               {std::make_shared<check_start_end_input>()});
-  server.set_http_handler<GET>("/home", &purecpp_controller::home, &purecpp_ctl,
-                               {std::make_shared<check_start_end_input>()});
+                                     purecpp_ctl);
+  server.set_http_handler<GET, POST>("/join_user_group",
+                                     &purecpp_controller::join_user_group,
+                                     purecpp_ctl, check_join_cncppcon2018{});
+
+  server.set_http_handler<GET>("/", &purecpp_controller::home, purecpp_ctl,
+                               check_start_end_input{});
+  server.set_http_handler<GET>("/home", &purecpp_controller::home, purecpp_ctl,
+                               check_start_end_input{});
   server.set_http_handler<GET, POST>("/detail", &purecpp_controller::detail,
-                                     &purecpp_ctl,
-                                     {std::make_shared<check_detail_input>()});
+                                     purecpp_ctl, check_detail_input{});
   server.set_http_handler<GET>("/category", &purecpp_controller::category,
-                               &purecpp_ctl,
-                               {std::make_shared<check_category_input>()});
+                               purecpp_ctl, check_category_input{});
   server.set_http_handler<GET, POST>("/search", &purecpp_controller::search,
-                                     &purecpp_ctl,
-                                     {std::make_shared<check_search_input>()});
+                                     purecpp_ctl, check_search_input{});
 
   server.set_http_handler<POST>("/comment", &purecpp_controller::comment,
-                                &purecpp_ctl,
-                                {std::make_shared<check_login>(),
-                                 std::make_shared<check_comment_input>()});
+                                purecpp_ctl, check_login{},
+                                check_comment_input{});
   server.set_http_handler<GET, POST>(
-      "/remove_comment", &purecpp_controller::remove_comment, &purecpp_ctl,
-      {std::make_shared<check_login>(),
-       std::make_shared<check_remove_comment_input>()});
+      "/remove_comment", &purecpp_controller::remove_comment, purecpp_ctl,
+      check_login{}, check_remove_comment_input{});
 
-  server.set_http_handler<GET, POST>(
-      "/add_post_page", &purecpp_controller::add_post_page, &purecpp_ctl,
-      {std::make_shared<check_login>()});
+  server.set_http_handler<GET, POST>("/add_post_page",
+                                     &purecpp_controller::add_post_page,
+                                     purecpp_ctl, check_login{});
   server.set_http_handler<GET, POST>("/add_post", &purecpp_controller::add_post,
-                                     &purecpp_ctl,
-                                     {std::make_shared<check_login>()});
+                                     purecpp_ctl, check_login{});
   server.set_http_handler<GET, POST>(
-      "/remove_post", &purecpp_controller::remove_post, &purecpp_ctl,
-      {std::make_shared<check_login>(),
-       std::make_shared<check_edit_post_input>()});
+      "/remove_post", &purecpp_controller::remove_post, purecpp_ctl,
+      check_login{}, check_edit_post_input{});
   server.set_http_handler<GET, POST>(
-      "/edit_post_page", &purecpp_controller::edit_post_page, &purecpp_ctl,
-      {std::make_shared<check_login>(),
-       std::make_shared<check_edit_post_input>()});
+      "/edit_post_page", &purecpp_controller::edit_post_page, purecpp_ctl,
+      check_login{}, check_edit_post_input{});
   server.set_http_handler<GET, POST>(
-      "/edit_post", &purecpp_controller::edit_post, &purecpp_ctl,
-      {std::make_shared<check_login>()});
+      "/edit_post", &purecpp_controller::edit_post, purecpp_ctl, check_login{});
   server.set_http_handler<GET, POST>(
-      "/pass_post", &purecpp_controller::pass_post, &purecpp_ctl,
-      {std::make_shared<check_login>(),
-       std::make_shared<check_edit_post_input>()});
+      "/pass_post", &purecpp_controller::pass_post, purecpp_ctl, check_login{},
+      check_edit_post_input{});
+  server.set_http_handler<GET, POST>("/my_post", &purecpp_controller::my_post,
+                                     purecpp_ctl, check_login{},
+                                     check_start_end_input{});
   server.set_http_handler<GET, POST>(
-      "/my_post", &purecpp_controller::my_post, &purecpp_ctl,
-      {std::make_shared<check_login>(),
-       std::make_shared<check_start_end_input>()});
-  server.set_http_handler<GET, POST>("/upload_file",
-                                     &purecpp_controller::upload, &purecpp_ctl,
-                                     {std::make_shared<check_login>()});
+      "/upload_file", &purecpp_controller::upload, purecpp_ctl, check_login{});
 
   server.sync_start();
 
diff --git a/ormpp b/ormpp
index 083123b..00c1082 160000
--- a/ormpp
+++ b/ormpp
@@ -1 +1 @@
-Subproject commit 083123b5cfe8498d8de9be2f319cb38fbce7a1cd
+Subproject commit 00c10827d050b6f039d9c1ecb427bf9fb7d6b5b1
diff --git a/purecpp_controller.hpp b/purecpp_controller.hpp
index 0f2b2d9..01516d8 100644
--- a/purecpp_controller.hpp
+++ b/purecpp_controller.hpp
@@ -15,7 +15,15 @@ using namespace ormpp;
 using namespace cinatra;
 
 namespace feather {
+#ifdef ORMPP_ENABLE_MYSQL
 using Dao = dao_t<dbng<mysql>>;
+#endif
+#ifdef ORMPP_ENABLE_SQLITE3
+using Dao = dao_t<dbng<sqlite>>;
+#endif
+#ifdef ORMPP_ENABLE_PG
+using Dao = dao_t<dbng<postgresql>>;
+#endif
 class purecpp_controller {
  public:
   purecpp_controller() {
diff --git a/validate.hpp b/validate.hpp
index d1f66ef..83ce21e 100644
--- a/validate.hpp
+++ b/validate.hpp
@@ -30,7 +30,7 @@ bool len_more_than(T... args) {
   return r;
 }
 
-struct check_login : public base_aspect {
+struct check_login {
   bool before(request& req, response& res) {
     auto v = get_user_info(req);
     if (v.empty() || v[0].empty()) {
@@ -42,7 +42,7 @@ struct check_login : public base_aspect {
   }
 };
 
-struct check_comment_input : public base_aspect {
+struct check_comment_input {
   bool before(request& req, response& res) {
     auto post_id = req.get_query_value("post_id");
     if (!is_integer(post_id)) {
@@ -84,13 +84,13 @@ inline bool check_integers(request& req, response& res, T... key) {
   return r;
 }
 
-struct check_remove_comment_input : public base_aspect {
+struct check_remove_comment_input {
   bool before(request& req, response& res) {
     return check_integers(req, res, "id", "post_id");
   }
 };
 
-struct check_detail_input : public base_aspect {
+struct check_detail_input {
   bool before(request& req, response& res) {
     return check_integer(req, res, "id");
   }
@@ -112,7 +112,7 @@ inline bool set_start_end(request& req, response& res, std::string& s,
   return true;
 }
 
-struct check_category_input : public base_aspect {
+struct check_category_input {
   bool before(request& req, response& res) {
     std::string s = "0";
     std::string lens = "10";
@@ -130,7 +130,7 @@ struct check_category_input : public base_aspect {
   }
 };
 
-struct check_search_input : public base_aspect {
+struct check_search_input {
   bool before(request& req, response& res) {
     std::string s = "0";
     std::string lens = "10";
@@ -160,7 +160,7 @@ struct check_search_input : public base_aspect {
   }
 };
 
-struct check_start_end_input : public base_aspect {
+struct check_start_end_input {
   bool before(request& req, response& res) {
     std::string s = "0";
     std::string lens = "10";
@@ -196,7 +196,7 @@ inline bool check_input(response& res, T... args) {
   return r;
 }
 
-struct check_login_input : public base_aspect {
+struct check_login_input {
   bool before(request& req, response& res) {
     auto user_name = req.get_query_value("user_name");
     auto password = req.get_query_value("password");
@@ -215,7 +215,7 @@ struct check_login_input : public base_aspect {
   }
 };
 
-struct check_sign_out_input : public base_aspect {
+struct check_sign_out_input {
   bool before(request& req, response& res) {
     auto user_name = req.get_query_value("user_name");
     auto email = req.get_query_value("email");
@@ -247,7 +247,7 @@ struct check_sign_out_input : public base_aspect {
   }
 };
 
-struct check_book_course : public base_aspect {
+struct check_book_course {
   bool before(request& req, response& res) {
     // std::string result;
     // for (size_t i = 0; i < req.get_form_url_map().size(); i++) {
@@ -270,7 +270,7 @@ struct check_book_course : public base_aspect {
   }
 };
 
-struct check_join_cncppcon2018 : public base_aspect {
+struct check_join_cncppcon2018 {
   bool before(request& req, response& res) {
     auto user_name = req.get_query_value("user_name");
     auto email = req.get_query_value("user_email");
@@ -310,7 +310,7 @@ struct check_join_cncppcon2018 : public base_aspect {
   }
 };
 
-struct check_query_cncppcon2018 : public base_aspect {
+struct check_query_cncppcon2018 {
   bool before(request& req, response& res) {
     auto phone = req.get_query_value("user_phone");
     auto answer = req.get_query_value("user_answer");
@@ -337,7 +337,7 @@ struct check_query_cncppcon2018 : public base_aspect {
   }
 };
 
-struct check_member_edit_input : public base_aspect {
+struct check_member_edit_input {
   bool before(request& req, response& res) {
     auto old_password = req.get_query_value("old_password");
     auto new_pwd = req.get_query_value("new_password");
@@ -361,7 +361,7 @@ struct check_member_edit_input : public base_aspect {
   }
 };
 
-struct check_edit_post_input : public base_aspect {
+struct check_edit_post_input {
   bool before(request& req, response& res) {
     if (!check_integer(req, res, "id")) {
       return false;