Answer
Async resources track handles like sockets or timers. Async operations are actions performed by these resources. Distinguishing them aids context tracking.
Quick Answer
An async resource (in async_hooks terms) is the object that represents the context of an async operation — it's created when you initiate an async task and tracks its lifecycle (init, before, after, destroy). An async operation is the actual work happening asynchronously (I/O read, timer, Promise resolution). The resource wraps the operation for tracking.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ