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Question 76 - Certified MuleSoft Integration Architect I discussion

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An organization uses a four(4) node customer hosted Mule runtime cluster to host one(1) stateless api implementation. The API is accessed over HTTPS through a load balancer that uses round-robin for load distribution. Each node in the cluster has been sized to be able to accept four(4) times the current number of requests.

Two(2) nodes in the cluster experience a power outage and are no longer available. The load balancer directs the outage and blocks the two unavailable the nodes from receiving further HTTP requests.

What performance-related consequence is guaranteed to happen to average, assuming the remaining cluster nodes are fully operational?

A.
100% increase in the average response time of the API
Answers
A.
100% increase in the average response time of the API
B.
50% reduction in the throughput of the API
Answers
B.
50% reduction in the throughput of the API
C.
100% increase in the number of requests received by each remaining node
Answers
C.
100% increase in the number of requests received by each remaining node
D.
50% increase in the JVM heap memory consumed by each remaining node
Answers
D.
50% increase in the JVM heap memory consumed by each remaining node
Suggested answer: A

Explanation:

* '100% increase in the throughput of the API' might look correct, as the number of requests processed per second might increase, but is it guaranteed to increase by 100%? Using 4 nodes will definitely increase throughput of system. But it is cant be precisely said if there would be 100% increase in throughput as it depends on many other factors. Also it is nowhere mentioned in the description that all nodes have same CPU/memory assigned. The question is about the guaranteed behavior * Increasing number of nodes will have no impact on response time as we are scaling application horizontally and not vertically. Similarly there is no change in JVM heap memory usage. * So Correct answer is 50% reduction in the number of requests being received by each node This is because of the two reasons. 1) API is mentioned as stateless 2) Load Balancer is used

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asked 23/09/2024
Bruno Colussi
25 questions
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