Large applications often accumulate outdated data, like old request logs or irrelevant dispatch coordinates, which need regular cleaning to maintain database efficiency. This tutorial demonstrates a method for automating database clean-up using a Node.js application, a CI pipeline, and scheduled tasks on CircleCI. The process involves setting up a Heroku-hosted app connected to a GitHub repository, configuring a CircleCI pipeline with environment variables, and creating scheduled jobs using cron syntax to periodically trigger a clean-up endpoint that deletes log data older than the current year. By following these steps, developers can automate the removal of obsolete data, optimizing database performance and exemplifying the benefits of incorporating CI/CD pipelines and automation in software management.