Skips database selection if the router is not configured. (#1915)

Author: henadzit

CHANGELOG.rst

@@ -9,6 +9,12 @@ Changelog
 0.24
 ====
 
+0.24.3 (unreleased)
+------
+Changed
+^^^^^^^
+- Skip database selection if the router is not configured to improve performance (#1915)
+
 0.24.2
 ------
 

tortoise/router.py

@@ -36,9 +36,15 @@ def _db_route(self, model: type[Model], action: str) -> BaseDBAsyncClient | None
             return None
 
     def db_for_read(self, model: type[Model]) -> BaseDBAsyncClient | None:
+        if not self._routers:
+            return None
+
         return self._db_route(model, "db_for_read")
 
     def db_for_write(self, model: type[Model]) -> BaseDBAsyncClient | None:
+        if not self._routers:
+            return None
+
         return self._db_route(model, "db_for_write")