Node.js FAQ: Top Questions
30. What are performance hooks in Node.js?
Performance hooks
, part of the
perf_hooks
module, provide APIs to measure and monitor application performance, including timing and custom metrics.
- PerformanceEntry: Records events like function execution time.
-
Methods:
performance.now,performance.mark,performance.measure. - Node.js Specific: Tracks GC, HTTP, and event loop delays.
- Use Case: Profiling, optimizing application performance.