What innovation or improvement did you propose and implement in your last project?

In my last Node.js project, I proposed and implemented an improvement in the logging system. Previously, logs were written to a single file, which caused performance issues and difficulties in analysis.

I implemented log rotation using the winston library and configured log separation by levels (info, error) and by time (daily files). This allowed:

• Reducing the size of individual log files.
• Simplifying error search and analysis.
• Increasing application stability through asynchronous log writing.

Example of configuration:

const { createLogger, format, transports } = require('winston');
require('winston-daily-rotate-file');

const transport = new transports.DailyRotateFile({
  filename: 'application-%DATE%.log',
  datePattern: 'YYYY-MM-DD',
  zippedArchive: true,
  maxSize: '20m',
  maxFiles: '14d'
});

const logger = createLogger({
  level: 'info',
  format: format.combine(
    format.timestamp(),
    format.json()
  ),
  transports: [transport]
});

module.exports = logger;

This improvement enhanced the support quality and monitoring of the application.