Express.js
/Beginner
Performance Monitoring
Definition
Monitoring involves tracking response times, memory usage, CPU spikes, and error rates in production. Tools like New Relic, Datadog, or Sentry integrate seamlessly with Express via middleware to provide real-time dashboards.
Explain Like I'm New
Monitoring involves tracking response times, memory usage, CPU spikes, and error rates in production.
Terminal Output
bash / terminal
$ npm install @sentry/node
// Sentry tracks every error and unhandled promise rejection
// in your Express app and sends it to a cloud dashboard.
Interview Questions
basic
- What is the primary purpose of Performance Monitoring in Express.js?
- How do you initialize Performance Monitoring?
intermediate
- How does Performance Monitoring integrate with other middleware components?
- Can you explain a common use case for Performance Monitoring?
advanced
- What are the performance implications of Performance Monitoring in a high-traffic production application?
- How would you debug issues related to Performance Monitoring?
trick
- Is it possible to achieve the same result as Performance Monitoring without using Express?