Discuss Adobe AD0-E117 Exam Topic 4 Question 36

AEM Site users report that the web content pages render very slowly. An Architect notices that the CPU usages of the AEM Publish instances are spiking and reviews the following entry in the log:

[Frt Nov 27 23:11:00 2019] [I] [pid 16004 (tid 140134145820416)] Current cache hit ratio: 47.94 %

What should the Architect do to increase the dispatcher cache ratio and prevent the AEM Publish CPU usage spikes?

AReview and optimize the Dispatcher cache configuration

BAdd additional AEM instances to the Publish Farm

CCreate a cron job that will delete the dispatcher cache on a regular basis

DAdd additional dispatcher servers

Suggested Answer: A

According to Adobe Experience Manager documentation5, dispatcher is a caching and load balancing tool that can be used to improve performance and security of AEM sites.Dispatcher cache configuration can be adjusted using various properties in the dispatcher.any file6. Creating a cron job that will delete the dispatcher cache on a regular basis is not a good idea as it will reduce the cache hit ratio and increase the load on AEM servers.

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26 comments · newest first

Clorinda 4 days ago

Option C seems risky. Deleting cache regularly might hurt performance.

Evan 9 days ago

I feel like adding more instances won't solve the root issue.

Ressie 14 days ago

Option B could work too, but it’s more of a band-aid solution.

Nakisha 20 days ago

Agreed! A higher cache hit ratio means less load on the CPU.

Sabra 25 days ago

I think option A is the best. Optimizing the cache can really help.

Alesia 30 days ago

Let’s hope we get this right!

Bong 1 month ago

I’d go with A as well.

Denny 1 month ago

True, A feels like the safest bet.

Helga 2 months ago

D could help, but it's costly.

Alesia 2 months ago

Yeah, deleting cache regularly? Not ideal.

Bong 2 months ago

C seems counterproductive.

Denny 2 months ago

More instances might reduce load.

Alesia 2 months ago

I agree, but B could work too.

Helga 2 months ago

Optimizing the cache can really help performance.

Denny 3 months ago

Why A?

Helga 3 months ago

I think option A is the best.

Denny 3 months ago

This question is tricky.

Josphine 3 months ago

I’m surprised the cache hit ratio is so low, thought it would be better!

Rosalind 3 months ago

Wait, deleting the cache regularly? That sounds counterproductive!

Mattie 3 months ago

Adding more servers (D) might help, but it’s not a long-term fix.

Dalene 4 months ago

Totally agree, better cache means less CPU strain!

Lynette 4 months ago

A) Review and optimize the Dispatcher cache configuration is the way to go.

Christa 4 months ago

Adding more dispatcher servers could distribute the load better, but I wonder if that’s really addressing the root cause. I’m leaning towards A, but I’m not completely confident.

Stevie 4 months ago

I think we went over a similar question where deleting the cache regularly was mentioned. But creating a cron job feels risky; it might not really help with the cache hit ratio.

Sheron 4 months ago

I'm not entirely sure, but adding more AEM instances might help with the CPU spikes. That sounds like B, but I feel like it could just be a temporary fix.

Novella 4 months ago

I remember we discussed the importance of optimizing the Dispatcher cache configuration in class. It seems like A could be the right choice.

Adobe AD0-E117 Exam - Topic 4 Question 36 Discussion