What’s the best design for this system, using DynamoDB?

You are creating a new API for video game scores. Reads are 100 times more common than writes, and the top 1% of scores are read 100 times more frequently than the rest of the scores. What’s the best design for this system, using DynamoDB? writes will miss the cache, since the supermajority will hit […]

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How do you further de-risk the rest of the execution environment, since in AWS, there are many service components you may use

You have been asked to de-risk deployments at your company. Specifically, the CEO is concerned about outages that occur because of accidental inconsistencies between Staging and Production, which sometimes cause unexpected behaviors in Production even when Staging tests pass. You already use Docker to get high consistency between Staging and Production for the application environment […]

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Which of these is the best system architectures for this system?

You work for a company that automatically tags photographs using artificial neural networks (ANNs), which run on GPUs using C++. You receive millions of images at a time, but only 3 times per day on average. These images are loaded into an AWS S3 bucket you control for you in a batch, and then the […]

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which is true?

When thinking of AWS Elastic Beanstalk’s model, which is true? levels (dev, stage, prod, fo forth). Deployments belong to environments, and are pushes of bundles of code for the environments to run. http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/Welcome.html A.Applications have many deployments, deployments have many environments. B.Environments have many applications, applications have many deployments. C.Applications have many environments, environments have […]

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How can you best meet this requirement and satisfy your CTO?

You are hired as the new head of operations for a SaaS company. Your CTO has asked you to make debugging any part of your entire operation simpler and as fast as possible. She complains that she has no idea what is going on in the complex, service-oriented architecture, because the developers just log to […]

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what is the first transition state an instance enters after leaving steady state when scaling in due to health check failure or

For AWS Auto Scaling, what is the first transition state an instance enters after leaving steady state when scaling in due to health check failure or decreased load? the Auto Scaling group and enter the Terminating state. http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/AutoScalingGroupLifecycle.html A.Terminating B.Detaching C.Terminating:Wait D.EnteringStandby Explanation:Explanation/Reference: When Auto Scaling responds to a scale in event, it terminates one […]

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