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Interview Questions and Answers for 'Amazon aws' - 4 question(s) found - Order By Newest

 Q1. What is a shard in Kinesis stream ?AWS2017-06-14 07:40:42

Ans. A shard is a uniquely identified group of data records in a stream or we can say that Shard is a partition in Kinesis stream. A shard supports a fixed bandwidth i.e fixed number of messages per second. The total capacity of the stream is the sum of the capacities of its shards. If the data rate changes, we can allocate / deallocate more shards to accommodate that.

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   Like      Discuss      Correct / Improve     Amazon AWS  AWS  Amazon Kinesis Stream  shard  shard in amazon kinesis


 Q2. What is the relationship between shard and partition key in kinesis stream ?AWS2017-06-14 07:42:01

Ans. A partition key is used to group data by shard within a stream. A partition key identifies which shard the message belong to.

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   Like      Discuss      Correct / Improve     Amazon AWS  AWS  Amazon Kinesis Stream  shard  shard in amazon kinesis   partition key in amazon kinesis   shard and partition key


 Q3. What do you understand by "Scaling Trigger" ?Server2017-06-16 08:23:20

Ans. It's a configuration for auto scaling environment that specify the attributes / conditions for scaling instances up and down. For example - We may like environment to scale up when the number of requests / sec increases a particular threshold and scale down when it decreases below a threshold.

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   Like      Discuss      Correct / Improve     AWS  Amazon AWS  Amazon EC2  Elastic Beanstalk  Auto Scaling  Scaling Trigger


 Q4. How can we know how many instances are currently in service within an Elastic Beanstalk environment ?AWS2017-06-16 08:25:40

Ans. We can go to respective environment and check configuration and then scaling. It mentions that as current status like

Current status:

2 instance(s) in service, Min: 1, Max: 4


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   Like      Discuss      Correct / Improve     AWS  Amazon AWS  Amazon EC2  Elastic Beanstalk  Auto Scaling




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