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4 Layers of AWS Architecture a Quick Answer

I have collected real interview questions on AWS key architecture components. Those are S3, EC2, SQS, and SimpleDB. AWS is one of the most popular skills in the area of Cloud computing. Many companies are recruiting software developers to work on cloud computing.

AWS Key Architecture Components AWS is the top cloud platform. The knowledge of this helpful to learn other cloud platforms. Below are the questions asked in interviews recently.
What are the components involved in AWS?Amazon S3.With this, one can retrieve the key information which is occupied in creating cloud structural design, and the amount of produced information also can be stored in this component that is the consequence of the key specified.Amazon EC2. Helpful to run a large distributed system on the Hadoop cluster. Automatic parallelization and job scheduling can be achieved by this component.Amazon SQS. This component acts as a mediator between different controllers. Also worn for cushioning requirements those are obt…

2 Scaling-Up And Scaling-out QlikView's Ideas! That You Can Never Miss

#The complete architecture of Qlik view:
#The Scale in complete architecture of Qlikview:
In scale-up architecture, a single server is used to serve the QlikView applications. In this case, as more throughput is required, bigger and/or faster hardware (e.g. with more RAM and/or CPU capacity) are added to the same server.

In scale-out architecture, more servers are added when more throughput is needed to achieve the performance necessary. It is common to see the use of commodity servers in these types of architectures. As more throughput is required new servers are added, creating a clustered QlikView environment. In these environments, QlikView Server supports load sharing of QlikView applications across multiple physical or logical computers. QlikView load balancing refers to the ability to distribute the load (i.e. end-user sessions) across the cluster in accordance to a predefined algorithm for selecting which node should take care of a certain session. QlikView Server version 11 supports three different load balancing algorithms.

#The scle-out QlikView Architecture:
  •  Below is a brief definition for each scheme. Please refer to the QlikView Scalability Overview Technology white paper for further details. 
  • Random: The default load balancing scheme. The user is sent to a random server, no matter if QlikView application the user is looking for is loaded or not on a QlikView Server. 
  • Loaded Document: If only one QlikView Server has the particular QlikView application loaded, the user is sent to that QlikView Server. If more than one QlikView Server or none of the QlikView Servers have the application loaded, the user is sent to the QlikView Server with the largest amount of free RAM.
  • CPU with RAM Overload: The user is sent to the least busy QlikView Server. 

Please note that this report does not go into detail on when to use and how to tune different load balancing algorithms for best performance. Cluster test executions presented in this report have been run in an environment configured with a better performing scheme for the certain conditions of a particular test.

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