medium10 pts · first answer countsnodejsevent-loopperformance

One report slows every request

An Express API has a route that builds a large report in a synchronous loop taking 3 seconds. While it runs, even the health check times out. Why?

A.Express handles only one route per fileB.The database connection pool is too smallC.Node runs JavaScript on one main thread, so the loop blocks the event loop for everyoneD.The health check route is missing async

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