It's common for Express developers to define routes in a separate file from the main Express app (app.js or server.js). Although our connection pooling blog post teaches developers to reuse a database connection, it's not clear how to implement database connection sharing across multiple files. This is a simple example that demonstrates how to set up MongoDB connections in an Express app so that the database connection can be used across multiple files.
gaspar08/express-mongodb-setup
A simple example that demonstrates how to set up MongoDB connections in an Express app.
JavaScript