diff --git a/hc_spider/json_logger.py b/hc_spider/json_logger.py
index 417cce3..d038294 100644
--- a/hc_spider/json_logger.py
+++ b/hc_spider/json_logger.py
@@ -4,17 +4,20 @@ import threading
 import time
 import warnings
 from typing import Callable, Union
+import datetime
 
 from hc_spider.model import SharedObjects
 
 
 class JSONLogger(threading.Thread):
-    logging_interval: int
+    _logging_interval: int
+    _timestamp: str
     _shared_objects: SharedObjects
 
     def __init__(self, **kwargs) -> None:
         self._shared_objects = SharedObjects(**kwargs)
-        self.logging_interval = self._shared_objects.config.get("logging_interval")
+        self._logging_interval = self._shared_objects.config.get("logging_interval")
+        self._timestamp = f"{datetime.datetime.now():%Y%m%d_%H%M%S}"
         super().__init__()
         self.daemon = True
         self.name = "JSONLogger"
@@ -28,7 +31,7 @@ class JSONLogger(threading.Thread):
         print(f"[{self.name}] is starting")
 
         while self._shared_objects.shutdown_event.is_set() is False:
-            time.sleep(self.logging_interval)
+            time.sleep(self._logging_interval)
             try:
                 self._dump_logs()
 
@@ -58,7 +61,7 @@ class JSONLogger(threading.Thread):
     def _dump_data_to_file(self, data: list | dict, filename: str, sort_key: Union[Callable, None]) -> None:
         if self._shared_objects.shutdown_event.is_set() is True:
             data.sort(key=sort_key)
-        with open(f"{self._shared_objects.config.get('log_dir')}/{filename}.json", "w") as f:
+        with open(f"{self._shared_objects.config.get('log_dir')}/{filename}_{self._timestamp}.json", "w") as f:
             f.write(json.dumps(data, indent=4))
 
     def _dump_not_valid_urls(self) -> None: