diff --git a/ToDo.md b/ToDo.md
index ee86940..4e4dd60 100644
--- a/ToDo.md
+++ b/ToDo.md
@@ -3,3 +3,5 @@
 - [x] stub files .pyi
 - [ ] Add tests for all, we need 100% test coverate
 - [x] Log: add custom format for "stack_correct" if set, this will override the normal stack block
+- [ ] Log: add rotate for size based
+- [ ] All folders and file names need to be revisited for naming and content collection
diff --git a/src/corelibs/logging_handling/log.py b/src/corelibs/logging_handling/log.py
index 03af8b3..1ed69aa 100644
--- a/src/corelibs/logging_handling/log.py
+++ b/src/corelibs/logging_handling/log.py
@@ -7,6 +7,7 @@ attach "init_worker_logging" with the set log_queue
 import re
 import logging.handlers
 import logging
+from datetime import datetime
 import time
 from pathlib import Path
 from typing import MutableMapping, TextIO, TypedDict, Any, TYPE_CHECKING, cast
@@ -23,6 +24,7 @@ class LogSettings(TypedDict):
     """log settings, for Log setup"""
     log_level_console: LoggingLevel
     log_level_file: LoggingLevel
+    per_run_log: bool
     console_enabled: bool
     console_color_output_enabled: bool
     add_start_info: bool
@@ -392,6 +394,7 @@ class Log(LogParent):
     DEFAULT_LOG_SETTINGS: LogSettings = {
         "log_level_console": DEFAULT_LOG_LEVEL_CONSOLE,
         "log_level_file": DEFAULT_LOG_LEVEL_FILE,
+        "per_run_log": False,
         "console_enabled": True,
         "console_color_output_enabled": True,
         "add_start_info": True,
@@ -440,7 +443,7 @@ class Log(LogParent):
         # in the file writer too, for the ones where color is set BEFORE the format
         # Any is logging.StreamHandler, logging.FileHandler and all logging.handlers.*
         self.handlers: dict[str, Any] = {}
-        self.add_handler('file_handler', self.__create_timed_rotating_file_handler(
+        self.add_handler('file_handler', self.__create_file_handler(
             'file_handler', self.log_settings['log_level_file'], log_path)
         )
         if self.log_settings['console_enabled']:
@@ -492,6 +495,7 @@ class Log(LogParent):
             default_log_settings[__log_entry] = LoggingLevel.from_any(__log_level)
         # check bool
         for __log_entry in [
+            "per_run_log",
             "console_enabled",
             "console_color_output_enabled",
             "add_start_info",
@@ -566,24 +570,35 @@ class Log(LogParent):
         return console_handler
 
     # MARK: file handler
-    def __create_timed_rotating_file_handler(
+    def __create_file_handler(
         self, handler_name: str,
         log_level_file: LoggingLevel, log_path: Path,
+        # for TimedRotating, if per_run_log is off
         when: str = "D", interval: int = 1, backup_count: int = 0
-    ) -> logging.handlers.TimedRotatingFileHandler:
+    ) -> logging.handlers.TimedRotatingFileHandler | logging.FileHandler:
         # file logger
         # when: S/M/H/D/W0-W6/midnight
         # interval: how many, 1D = every day
         # backup_count: how many old to keep, 0 = all
         if not self.validate_log_level(log_level_file):
             log_level_file = self.DEFAULT_LOG_LEVEL_FILE
-        file_handler = logging.handlers.TimedRotatingFileHandler(
-            filename=log_path,
-            encoding="utf-8",
-            when=when,
-            interval=interval,
-            backupCount=backup_count
-        )
+        if self.log_settings['per_run_log']:
+            # log path, remove them stem (".log"), then add the datetime and add .log again
+            now = datetime.now()
+            # we add microseconds part to get milli seconds
+            new_stem=f"{log_path.stem}.{now.strftime('%Y-%m-%d_%H-%M-%S')}.{str(now.microsecond)[:3]}"
+            file_handler = logging.FileHandler(
+                filename=log_path.with_name(f"{new_stem}{log_path.suffix}"),
+                encoding="utf-8",
+            )
+        else:
+            file_handler = logging.handlers.TimedRotatingFileHandler(
+                filename=log_path,
+                encoding="utf-8",
+                when=when,
+                interval=interval,
+                backupCount=backup_count
+            )
         formatter_file_handler = logging.Formatter(
             (
                 # time stamp
diff --git a/test-run/logging_handling/log.py b/test-run/logging_handling/log.py
index e28a0de..dcd3cb5 100644
--- a/test-run/logging_handling/log.py
+++ b/test-run/logging_handling/log.py
@@ -24,6 +24,7 @@ def main():
             # "log_level_console": None,
             "log_level_file": 'DEBUG',
             # "console_color_output_enabled": False,
+            "per_run_log": True
         }
     )
     logn = Logger(log.get_logger_settings())