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

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

The best practices for connection pooling in Node.js with MongoDB include setting an appropriate pool size, using the MongoDB driver’s built-in pooling, and handling connection errors gracefully.

How do I set the pool size in my MongoDB connection?

You can set the pool size by specifying the maxPoolSize option when creating a new MongoClient instance, like this: new MongoClient(uri, { maxPoolSize: 10 }).

What happens if the pool size is too small?

If the pool size is too small, your application may experience delays or timeouts when trying to access the database, as requests will have to wait for available connections.

Can I monitor the connection pool usage?

Yes, you can monitor connection pool usage by using the MongoClient events like connectionCreated and connectionClosed, or by using monitoring tools like MongoDB Atlas.