Last Updated: November 21, 2025
Metrics
| Focus | Tool |
|---|---|
Event loop
|
clinic doctor |
Heap
|
clinic heap |
Streams
|
clinic flame |
Commands
node --trace-events app.js
Trace
clinic doctor -- node app.js
Analyze
node --prof
Profile
Advice
Avoid blocking loops, cache heavy results, and use stream backpressure.
💡 Pro Tip:
Profile with clinic/flame, avoid sync fs, and handle backpressure.