diff --git a/aciniformes_backend/worker/scheduler.py b/aciniformes_backend/worker/scheduler.py
index 45becb6..1f97974 100644
--- a/aciniformes_backend/worker/scheduler.py
+++ b/aciniformes_backend/worker/scheduler.py
@@ -14,7 +14,7 @@
 from aciniformes_backend.settings import get_settings
 
 from .ping import ping
-from .session import dbsession
+from .session import session_factory
 
 
 logger = logging.getLogger(__name__)
@@ -50,7 +50,8 @@ async def start(self):
             seconds=self.settings.FETCHERS_UPDATE_DELAY_IN_SECONDS,
             trigger="interval",
         )
-        self.fetchers = dbsession().query(Fetcher).all()
+        with session_factory() as session:
+            self.fetchers = session.query(Fetcher).all()
         self.scheduler.start()
         for fetcher in self.fetchers:
             self.add_fetcher(fetcher)
@@ -65,11 +66,10 @@ def stop(self):
         self.scheduler.shutdown()
 
     async def write_alert(self, alert: AlertCreateSchema):
-        receivers = dbsession().query(Receiver).all()
-        session = dbsession()
-        alert = Alert(**alert.model_dump(exclude_none=True))
-        session.add(alert)
-        session.flush()
+        with session_factory() as session:
+            receivers = session.query(Receiver).all()
+            alert = Alert(**alert.model_dump(exclude_none=True))
+            session.add(alert)
         for receiver in receivers:
             async with aiohttp.ClientSession() as s:
                 async with s.request(method=receiver.method, url=receiver.url, data=receiver.receiver_body):
@@ -83,7 +83,8 @@ def _parse_timedelta(fetcher: Fetcher) -> tuple[int, int]:
     async def __update_fetchers(self) -> AsyncIterator[None]:
         jobs = [job.id for job in self.scheduler.get_jobs()]
         old_fetchers = self.fetchers
-        new_fetchers = dbsession().query(Fetcher).all()
+        with session_factory() as session:
+            new_fetchers = session.query(Fetcher).all()
 
         # Проверка на удаление фетчера
         for fetcher in old_fetchers:
@@ -144,10 +145,9 @@ async def _process_fail(
         self._reschedule_job(fetcher, False)
 
     def add_metric(self, metric: MetricCreateSchema):
-        session = dbsession()
-        metric = Metric(**metric.model_dump(exclude_none=True))
-        session.add(metric)
-        session.commit()
+        with session_factory() as session:
+            metric = Metric(**metric.model_dump(exclude_none=True))
+            session.add(metric)
         return metric
 
     async def _fetch_it(self, fetcher: Fetcher):
diff --git a/aciniformes_backend/worker/session.py b/aciniformes_backend/worker/session.py
index 6917d32..c346b86 100644
--- a/aciniformes_backend/worker/session.py
+++ b/aciniformes_backend/worker/session.py
@@ -1,5 +1,5 @@
 from sqlalchemy import create_engine
-from sqlalchemy.orm import Session, sessionmaker
+from sqlalchemy.orm import sessionmaker
 
 from aciniformes_backend.settings import get_settings
 
@@ -7,11 +7,4 @@
 settings = get_settings()
 
 engine = create_engine(str(settings.DB_DSN), execution_options={"isolation_level": "AUTOCOMMIT", "pool_pre_ping": True})
-session = sessionmaker(bind=engine)
-
-
-def dbsession() -> Session:
-    global session
-    localsession = session()
-
-    return localsession
+session_factory = sessionmaker(bind=engine)
\ No newline at end of file