diff --git a/lib/mysql.hpp b/lib/mysql.hpp
index 7d94b5f..b86a496 100644
--- a/lib/mysql.hpp
+++ b/lib/mysql.hpp
@@ -8,6 +8,7 @@
 #include <iostream>
 #include <mutex>
 #include <thread>
+#include <future>
 
 #include <mysql_driver.h>
 #include <mysql_connection.h>
@@ -68,6 +69,8 @@ class mySQL {
     bool isPersistent;
     uint numOfCon;
     uint reconTrys = 3;
+    bool runBot = true;
+    future<void> bot;
     
     void getColumns(const string _table, vector<string> &_columns, Connection *ptr_con); // privatno
     bool open_one(const uint idx);
diff --git a/src/mysql.cpp b/src/mysql.cpp
index fbb9c86..95b1f28 100644
--- a/src/mysql.cpp
+++ b/src/mysql.cpp
@@ -114,6 +114,34 @@ mySQL::mySQL(const string _path, const string _username, const string _password,
             throw string("[ERROR] Unable to open database " + db);
          }
       }
+
+      bot = async(launch::async, [&]{
+         while (runBot) {
+            try {
+               for (uint i=0; i<con.size(); i++) {
+                  if (con[i].first->try_lock()) {
+                     if (!con[i].second->isValid()) {
+                        if (connect_one(i)) {
+                           throw string("[ERROR] Unable to connect database ");
+                        }
+
+                        if (!db.empty()) {
+                           if (open_one(i)) {
+                              throw string("[ERROR] Unable to open database " + db);
+                           }
+                        }
+                     }
+                     con[i].first->unlock();
+                  }
+               }
+            } catch (const SQLException except) {
+               cout << except.what() << endl;
+            } catch (const string except) {
+               cout << except << endl;
+            }
+         }
+         return;
+      });
    }
 
 }
@@ -184,6 +212,7 @@ bool mySQL::disconnect_one(const uint idx) {
       status = false; // već je zatvorena
    }
 
+   delete con[idx].second;
    return status;
 }
 
@@ -236,9 +265,36 @@ void mySQL::reconnectTrys(const uint _trys) {
 }
 
 void mySQL::exec(sqlQA &sql_qa) {
+
+   if (!isPersistent) {
+      if (connect()) {
+         throw string("[ERROR] Unable to connect database ");
+      }
+
+      if (!db.empty()) {
+         if (open()) {
+            throw string("[ERROR] Unable to open database " + db);
+         }
+      }
+   }
+
    const uint idx = findFreeCon(); 
 
-   if (!isPersistent || !con[idx].second->isValid() || con[idx].second->isClosed()) {
+   if (!isPersistent || con[idx].second->isClosed()) {
+      if (connect_one(idx)) {
+         throw string("[ERROR] Unable to connect database ");
+      }
+
+      if (open_one(idx)) {
+         throw string("[ERROR] Unable to open database " + db);
+      }
+   }
+
+   else if (!con[idx].second->isValid()) {
+      if(disconnect_one(idx)) {
+         throw string("[ERROR] Unable to close database ");
+      }
+
       if (connect_one(idx)) {
          throw string("[ERROR] Unable to connect database ");
       }
@@ -325,14 +381,18 @@ uint mySQL::findFreeCon() {
    lock_guard<mutex> master(io);
    while (true) {
       for (uint i=0; i<con.size(); i++) {
-         if (con[i].first->try_lock()) {
-            return i;
-         }
+         // if (con[i].second->isValid()) {
+            if (con[i].first->try_lock()) {
+               return i;
+            }
+         // }
       }
    }
 }
 
 mySQL::~mySQL() {
+   runBot = false;
+   bot.get();
    if(disconnect()) {
       throw string("[ERROR] Unable to close database ");
    }
diff --git a/test/test.cpp b/test/test.cpp
index 30d9714..0a8b6f7 100644
--- a/test/test.cpp
+++ b/test/test.cpp
@@ -18,40 +18,75 @@ int main() {
                 sqlQA test_qa;
                 test_qa.select().from("records").where("enabled = 1");
                 mydb.exec(test_qa);
-                test_qa.print(true);
-            } catch (const string err) {
-                cout << err << endl;
-            }
-        });
-
-        thread t2([&](){
-            try {
-                sqlQA test_qa;
-                test_qa.select().from("zones");
-                mydb.exec(test_qa);
-                test_qa.print(true);
-            } catch (const string err) {
-                cout << err << endl;
-            }
-        });
-
-        thread t3([&](){
-            try {
-                sqlQA test_qa;
-                test_qa.select().from("users");
-                mydb.exec(test_qa);
-                test_qa.print(true);
+                //test_qa.print(true);
             } catch (const string err) {
                 cout << err << endl;
             }
         });
 
+        // thread t2([&](){
+        //     try {
+        //         sqlQA test_qa;
+        //         test_qa.select().from("zones");
+        //         mydb.exec(test_qa);
+        //         //test_qa.print(true);
+        //     } catch (const string err) {
+        //         cout << err << endl;
+        //     }
+        // });
+
+        // thread t3([&](){
+        //     try {
+        //         sqlQA test_qa;
+        //         test_qa.select().from("users");
+        //         mydb.exec(test_qa);
+        //         //test_qa.print(true);
+        //     } catch (const string err) {
+        //         cout << err << endl;
+        //     }
+        // });
+
+        // thread t4([&](){
+        //     try {
+        //         sqlQA test_qa;
+        //         test_qa.select().from("records").where("enabled = 1");
+        //         mydb.exec(test_qa);
+        //         //test_qa.print(true);
+        //     } catch (const string err) {
+        //         cout << err << endl;
+        //     }
+        // });
+
+        // thread t5([&](){
+        //     try {
+        //         sqlQA test_qa;
+        //         test_qa.select().from("zones");
+        //         mydb.exec(test_qa);
+        //         //test_qa.print(true);
+        //     } catch (const string err) {
+        //         cout << err << endl;
+        //     }
+        // });
+
+        // thread t6([&](){
+        //     try {
+        //         sqlQA test_qa;
+        //         test_qa.select().from("users");
+        //         mydb.exec(test_qa);
+        //         // test_qa.print(true);
+        //     } catch (const string err) {
+        //         cout << err << endl;
+        //     }
+        // });
 
         t1.join();
-        t2.join();
-        t3.join();
+        // t2.join();
+        // t3.join();
+        // t4.join();
+        // t5.join();
+        // t6.join();
 
-        // one by one
+//        one by one
         // try {
         //     sqlQA test_qa;
         //     test_qa.select().from("records").where("enabled = 1");
@@ -94,6 +129,8 @@ int main() {
         cout << "Jebi ga" << endl;
     }
 
+    sleep(100);
+
 
     return 0;
 }
\ No newline at end of file
diff --git a/test/test.o b/test/test.o
index 0bc3010..af687d8 100755
Binary files a/test/test.o and b/test/test.o differ