Load Testing Considerations
Question
You have an application hosted on an EC2 Instance.
To distribute content you are planning to use the Content Delivery service.
Before going to production there is a requirement to perform a load test.
Which of the following should be considered when conducting a load test which involves the CDN service.
Choose 3 answers from the options given below.
Answers
Explanations
Click on the arrows to vote for the correct answer
A. B. C. D.Answer - A,B and D.
The following should be considered.
· Send client requests from multiple geographic regions.
· Configure your test so each client makes an independent DNS request; each client will then receive a different set of IP addresses from DNS.
· For each client that is making requests, spread your client requests across the set of IP addresses that are returned by DNS, which ensures that the load is distributed across multiple servers in a CloudFront edge location.
For more information on load testing the CDN service please visit the below URL:
http://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/load-testing.htmlWhen conducting a load test that involves the Content Delivery Network (CDN) service, there are several considerations that should be taken into account. The following are the three most important considerations:
A. Send client requests from multiple geographic regions: When conducting a load test that involves the CDN service, it is important to test the performance of the CDN service from multiple geographic regions. This is because CDNs work by caching content in edge locations that are closer to the end-users. Therefore, to accurately test the CDN service's performance, it is necessary to send client requests from multiple geographic regions to determine the CDN's ability to deliver content quickly and efficiently from various locations.
B. Configure your test so each client makes an independent DNS request: It is important to configure the test so that each client makes an independent DNS request. This is because CDNs use DNS to route requests to the appropriate edge location, and the DNS response time can impact the overall performance of the CDN service. Therefore, it is necessary to test the CDN's ability to handle multiple independent DNS requests simultaneously.
C. Ensure that the request goes to the first IP returned by the DNS: It is not recommended to ensure that the request goes to the first IP returned by the DNS. This is because CDNs return multiple IP addresses for a given hostname to distribute the load across multiple edge locations. Therefore, it is essential to spread the client requests across the set of IP addresses returned by DNS.
D. Spread your client requests across the set of IP addresses that are returned by DNS: It is important to spread client requests across the set of IP addresses returned by DNS to ensure that the CDN service is load-balanced across multiple edge locations. This helps to avoid overloading any single edge location and ensures that content is delivered efficiently and quickly to end-users regardless of their geographic location.
