init commit

app/db/database.py

@@ -0,0 +1,36 @@
+"""Database connection and session management"""
+
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+from app.core.config import get_settings
+
+settings = get_settings()
+
+# Create database engine
+engine = create_engine(
+    settings.database_url,
+    echo=settings.database_echo,
+    pool_pre_ping=True,  # Verify connections before using them
+    pool_recycle=3600,   # Recycle connections every hour
+)
+
+# Create session factory
+SessionLocal = sessionmaker(
+    bind=engine,
+    autocommit=False,
+    autoflush=False,
+    expire_on_commit=False,
+)
+
+# Create declarative base for models
+Base = declarative_base()
+
+
+def get_db():
+    """Dependency for FastAPI to get database session"""
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()