AWS Certified SysOps Administrator - Associate | SOA-C02 Exam | Amazon Provider
Question
A large e-commerce furniture company is using a Web application supported by Application Load Balancer.
ALB invokes a Lambda function based upon query parameter key within HTTP headers in the client request.
When clients search products on this application with size & color options, they get responses only on one of the options & not both.
Marketing Team is looking for a quick resolution for this error. Which of the following can be done to resolve this error?
Answers
Explanations
Click on the arrows to vote for the correct answer
A. B. C. D.Correct Answer -D.
By default, ALB considers the last value within query parameters while invoking Lambda Function.
In the case of multiple query parameters, Multi-value headers need to be enabled to pass all query parameter values to the Lambda function.
Option A is incorrect as this will consider header parameters in the request & not query string parameters.
Option B is incorrect as Path-based routing will consider URL within the request for forwarding towards Target groups.
Option C is incorrect as Host-based routing will consider the host field with HTTP headers for forwarding requests towards Target groups.
For more information on Lambda Function as the target for ALB, refer to the following URL-
https://docs.aws.amazon.com/elasticloadbalancing/latest/application/lambda-functions.html#multi-value-headersThe issue with the e-commerce furniture company's Web application is that clients are not getting responses on both size and color options when searching for products. The ALB invokes a Lambda function based on a query parameter key within HTTP headers in the client request.
To resolve this error, the marketing team is looking for a quick solution. One solution could be to enable Multi-Value headers for Target groups with the Target as a Lambda function.
Multi-Value headers allow multiple headers with the same name to be included in a request. This means that the client can include multiple size and color options in the HTTP headers, and the Lambda function will be able to process them correctly. Enabling Multi-Value headers for the Target group with the Lambda function will ensure that the Lambda function can handle multiple headers with the same name.
Option A, enabling HTTP header conditions, may help to filter requests based on specific HTTP headers, but it does not address the issue of handling multiple headers with the same name.
Option B, enabling Path-based routing, is used to route requests based on the path of the URL. This would not address the issue with the HTTP headers.
Option C, enabling Host-based routing, is used to route requests based on the host name of the URL. This would also not address the issue with the HTTP headers.
In conclusion, option D, enabling Multi-Value headers for Target groups with the Target as a Lambda function, is the best solution to resolve the error with the e-commerce furniture company's Web application.
