Healthchecks With Nestjs App

Overview

Monitoring a distributed system has become an essential task for developers, especially for those utilizing frameworks like NestJS within a Kubernetes cluster. Ensuring that your application remains available and that all dependencies are functioning optimally is crucial for delivering an excellent user experience. In this review, we'll explore how to effectively monitor your NestJS application by checking the health of its services and dependencies.

Features

• Easy Installation: Simply run npm install to install all necessary dependencies for your NestJS application, making setup a breeze.
• Backend and Frontend Separation: Use nx serve api to start the backend and nx serve frontend for the frontend, allowing for a seamless division of concerns.
• Health Metrics Endpoint: Access application health metrics at http://localhost:3333/api/v1/metrics, providing real-time insights into your system's performance.
• Health Check URL: The health check can be accessed through http://localhost:3333/api/v1/health, enabling quick status checks on service availability.
• User-Friendly Frontend Access: To view the frontend, simply navigate to http://localhost:4200, highlighting its ease of use.
• Docker Support: Run docker-compose up to start Prometheus and Grafana containers, offering powerful tools for monitoring and visualization of your application's metrics.
• Dependency Monitoring: The structure encourages checking the health of external services such as databases, ensuring all dependencies are functioning properly to mitigate user experience issues.
• Scalability in Kubernetes: With monitoring capabilities in place, your application can scale effectively in a Kubernetes environment, maintaining performance under load.