What are the best practices for connection pooling in Node.js applications?

What are the best practices for connection pooling in Node.js applications?

Connection pooling is essential for optimizing database interactions in Node.js. Best practices include using a reliable library like node-postgres or mongoose, configuring the pool size based on your application's load, and ensuring proper error handling.

How do I configure the pool size effectively?

To configure the pool size, consider your application's concurrency needs. A good starting point is to set the pool size to the number of CPU cores available, then adjust based on performance testing.

What should I do if I encounter connection leaks?

If you encounter connection leaks, ensure that every connection is released back to the pool after use. Implement proper error handling and use tools like pg-pool to monitor active connections.

Can you recommend any libraries for connection pooling?

Sure! For PostgreSQL, pg-pool is a great choice. For MongoDB, consider using mongoose with its built-in connection pooling features.