From 155004df5ca2b6f169df5f9853e647b109b0a2f2 Mon Sep 17 00:00:00 2001
From: host <arumyantsev@rummail.ru>
Date: Sun, 9 Aug 2026 14:22:11 +0300
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---
 backend/app/database.py | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 backend/app/database.py

diff --git a/backend/app/database.py b/backend/app/database.py
new file mode 100644
index 0000000..815741b
--- /dev/null
+++ b/backend/app/database.py
@@ -0,0 +1,23 @@
+from collections.abc import Generator
+
+from sqlalchemy import create_engine
+from sqlalchemy.orm import DeclarativeBase, Session, sessionmaker
+
+from .config import settings
+
+
+class Base(DeclarativeBase):
+    """Базовый класс SQLAlchemy-моделей."""
+
+
+engine = create_engine(settings.database_url, pool_pre_ping=True)
+SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False)
+
+
+def get_db() -> Generator[Session, None, None]:
+    """Открывает сессию БД для одного HTTP-запроса."""
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()