How can I implement logging in a Node.js application using MongoDB?

How can I implement logging in a Node.js application using MongoDB?

You can use a logging library like Winston or Bunyan, and configure it to log to a MongoDB database.

Can you show me a basic example of using Winston with MongoDB?

Sure! First, install Winston and the MongoDB transport: npm install winston winston-mongodb. Then, set it up like this:

const winston = require('winston');
const { MongoDB } = require('winston-mongodb');

const logger = winston.createLogger({
  transports: [
    new MongoDB({
      db: 'mongodb://localhost:27017/logs',
      collection: 'log',
      level: 'info',
    }),
  ],
});

logger.info('This is an info message');

What other logging levels can I use with Winston?

Winston supports several logging levels: error, warn, info, http, verbose, debug, and silly. You can choose based on your needs.

Is it possible to log errors to a separate collection in MongoDB?

Yes, you can create multiple transports in Winston, each pointing to different collections based on the log level.