diff --git a/neetbox/server/db/_history.py b/neetbox/server/db/_history.py
index d2007933..580d3eb2 100644
--- a/neetbox/server/db/_history.py
+++ b/neetbox/server/db/_history.py
@@ -11,11 +11,12 @@
 from datetime import datetime
 from typing import Union
 
-from ._condition import *
 from neetbox._protocol import *
-from neetbox.utils import ResourceLoader
 from neetbox.logging import LogStyle
 from neetbox.logging.logger import Logger
+from neetbox.utils import ResourceLoader
+
+from ._condition import *
 
 logger = Logger("NEETBOX", LogStyle(skip_writers=["ws"]))
 
@@ -243,15 +244,21 @@ def get_series_of_table(self, table_name, run_id=None):
         result, _ = self._query(sql_query, *args, fetch=DbQueryFetchType.ALL)
         return [result for (result,) in result]
 
-    def do_limit_num_row_for(self, table_name: str, run_id: str, num_row_limit: int):
+    def do_limit_num_row_for(
+        self, table_name: str, run_id: str, num_row_limit: int, series: str = None
+    ):
         if num_row_limit <= 0:  # no limit or random not triggered
             return
         sql_query = f"SELECT count(*) from {table_name} WHERE {RUN_ID_COLUMN_NAME} = {run_id}"  # count rows for runid in specific table
+        if series is not None:
+            sql_query += f" AND {SERIES_COLUMN_NAME} = '{series}'"
         num_rows, _ = self._query(sql_query, fetch=DbQueryFetchType.ONE)
         if num_rows[0] > num_row_limit:  # num rows exceeded limit
             sql_query = f"SELECT {ID_COLUMN_NAME} from {table_name} WHERE {RUN_ID_COLUMN_NAME} = {run_id} ORDER BY {ID_COLUMN_NAME} DESC LIMIT 1 OFFSET {num_row_limit - 1}"  # get max id to delete of row for specific run id
             max_id_to_del, _ = self._query(sql_query, fetch=DbQueryFetchType.ONE)
             sql_query = f"DELETE FROM {table_name} WHERE {ID_COLUMN_NAME} < {max_id_to_del[0]} AND {RUN_ID_COLUMN_NAME} = {run_id}"
+            if series is not None:
+                sql_query += f" AND {SERIES_COLUMN_NAME} = '{series}'"
             self._query(sql_query)  # delete rows with smaller id and specific run id
 
     def write_json(
@@ -278,7 +285,9 @@ def write_json(
         if isinstance(json_data, dict):
             json_data = json.dumps(json_data)
         _, lastrowid = self._execute(sql_query, timestamp, series, run_id, json_data)
-        self.do_limit_num_row_for(table_name, run_id, num_row_limit)
+        self.do_limit_num_row_for(
+            table_name=table_name, run_id=run_id, num_row_limit=num_row_limit, series=series
+        )
         return lastrowid
 
     def read_json(self, table_name: str, condition: QueryCondition = None):
@@ -366,7 +375,9 @@ def write_blob(
 
         sql_query = f"INSERT INTO {table_name}({TIMESTAMP_COLUMN_NAME}, {SERIES_COLUMN_NAME}, {RUN_ID_COLUMN_NAME}, {METADATA_COLUMN_NAME}, {BLOB_COLUMN_NAME}) VALUES (?, ?, ?, ?, ?)"
         _, lastrowid = self._execute(sql_query, timestamp, series, run_id, meta_data, blob_data)
-        self.do_limit_num_row_for(table_name, run_id, num_row_limit)
+        self.do_limit_num_row_for(
+            table_name=table_name, run_id=run_id, num_row_limit=num_row_limit, series=series
+        )
         return lastrowid
 
     def read_blob(self, table_name: str, condition: QueryCondition = None, meta_only=False):
diff --git a/tests/client/test.py b/tests/client/test.py
index d04f4a2c..85ccdc77 100644
--- a/tests/client/test.py
+++ b/tests/client/test.py
@@ -132,11 +132,20 @@ def log_with_some_prefix():
     logger.err("some error")
 
 
-train_config = {"epoch": 9999}
+train_config = {"epoch": 99, "batch_size": 10}
+
+
+def train_epoch(config):
+    def train_batch_in_epoch(num_batch):
+        for i in neetbox.progress(num_batch):
+            time.sleep(1)
+            train(i)
+
+    with neetbox.progress(config["epoch"]) as progress:
+        for _ in progress:
+            train_batch_in_epoch(config["batch_size"])
+
 
 if __name__ == "__main__":
     neetbox.add_hyperparams(train_config)
-    with neetbox.progress(train_config["epoch"]) as epochs:
-        for i in epochs:
-            sleep(1)
-            train(i)
+    train_epoch(train_config)