easy5 pts · first answer countshttpdebugging

What a 504 from Nginx means

Users see "504 Gateway Timeout" from Nginx, which sits in front of your Node.js app. What does it tell you?

A.The client sent a malformed requestB.The TLS certificate on the proxy has expired, so Nginx refuses to forward the request to the appC.The client is not authenticatedD.Nginx did not receive a response from the upstream app server in time

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