A news feed web service has the following code running on Google App Engine. During peak load, users report that they can see news articles they already viewed. What is the most likely cause of this problem?
A) The session variable is local to just a single instance
B) The session variable is being overwritten in Cloud Datastore
C) The URL of the API needs to be modified to prevent caching
D) The HTTP Expires header needs to be set to -1 stop caching

Question

A news feed web service has the following code running on Google App Engine. During peak load, users report that they can see news articles they already viewed. What is the most likely cause of this problem? 
A) The session variable is local to just a single instance 
B) The session variable is being overwritten in Cloud Datastore 
C) The URL of the API needs to be modified to prevent caching 
D) The HTTP Expires header needs to be set to -1 stop caching

Quizplus · Accepted Answer

The Answer of A news feed web service has the following code running on Google App Engine. During peak load, users report that they can see news articles they already viewed. What is the most likely cause of this problem? 
A) The session variable is local to just a single instance 
B) The session variable is being overwritten in Cloud Datastore 
C) The URL of the API needs to be modified to prevent caching 
D) The HTTP Expires header needs to be set to -1 stop caching

A News Feed Web Service Has the Following Code Running