Answer
Synchronous functions block the event loop, delaying other requests and reducing server responsiveness.
Quick Answer
Synchronous functions block the event loop for their entire duration. While one request's sync operation runs (database query, file read, computation), all other incoming requests queue up and wait. In a web server handling hundreds of concurrent requests, a single 100ms sync operation can add 100ms latency to every queued request.
S
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.
Want to bookmark, take notes, or join discussions?
Sign in to access all features and personalize your learning experience.
Source: SugharaIQ