What is database connection pooling in Python?

What is database connection pooling in Python?

Database connection pooling is a technique used to manage database connections efficiently. It allows multiple connections to be reused, reducing the overhead of establishing new connections.

Why is connection pooling important?

Connection pooling is important because it improves application performance by minimizing the time spent on opening and closing database connections, which can be resource-intensive.

How do I implement connection pooling in Python?

You can implement connection pooling in Python using libraries like SQLAlchemy or psycopg2. For example, SQLAlchemy has built-in support for connection pooling.

Can you show me a code example?

Sure! Here's a simple example using SQLAlchemy:

from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker

engine = create_engine('postgresql://user:password@localhost/dbname', pool_size=5, max_overflow=10)
Session = sessionmaker(bind=engine)
session = Session()