diff --git a/src/main.rs b/src/main.rs
index dac73b3..605f274 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -404,13 +404,12 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         let mut serverhealth = ServerHealth::new();
         let mut prev_server_epoch: u128 = 0;
         let mut epoch_difference: f64 = 0.0;
-        let mut epoch_difference_vec: Vec<f64> = Vec::new();
         let mut epoch_mean: f64 = 0.0;
         let mut elapsed_time: u128 = 0;
 
         loop {
             let instant = Instant::now();
-
+            let mut epoch_difference_vec: Vec<f64> = Vec::new();
             // let mut usertime_mutex = usertime_arc.lock().await;
             // server_health_check_team::execute_server_health_check(&mut usertime_mutex).await;
             // time_checking_team::execute_time_check(&mut usertime_mutex).await;
@@ -1029,10 +1028,10 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     if RUNNING_MODE == REAL || RUNNING_MODE == SIMUL {
         tokio::task::spawn(async move {
             sleep(Duration::from_secs(40)).await;
-            let mut all_data = AllData::new();
             let mut elapsed_time = 0;
             loop {
                 let instant = Instant::now();
+                let mut all_data = AllData::new();
                 all_data.valid_symbol_vec = rx3_valid_usdt_trade_vec.borrow().clone();
 
                 // realtime price data
@@ -1102,12 +1101,13 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     if RUNNING_MODE == REAL || RUNNING_MODE == SIMUL {
         tokio::task::spawn(async move {
             sleep(Duration::from_secs(40)).await;
-            let mut all_data = AllData::new();
-            let mut exchange_info_vec: Vec<ExchangeInfo> = Vec::new();
-            let mut trade_fee_vec: Vec<TradeFee> = Vec::new();
             let mut elapsed_time = 0;
             loop {
                 let instant = Instant::now();
+                let mut all_data = AllData::new();
+                let mut exchange_info_vec: Vec<ExchangeInfo> = Vec::new();
+                let mut trade_fee_vec: Vec<TradeFee> = Vec::new();
+
                 all_data.valid_symbol_vec = rx4_valid_usdt_trade_vec.borrow().clone();
                 exchange_info_vec = rx6_exchange_info_data.borrow().clone();
                 trade_fee_vec = rx5_tradefee_vec.borrow().clone();
@@ -1391,10 +1391,10 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     // Task#24: monitoring_scoreboard
     tokio::task::spawn(async move {
         let mut elapsed_time = 0;
-        let mut all_data = AllData::new();
         loop {
             let instant = Instant::now();
-
+            let mut all_data = AllData::new();
+            
             // realtime price data
             all_data.rt_price_1m_vec = rx4_rt_price_1m_vec.borrow().clone();