Using Load Balancer to Route Requests for Front-end and Image Processing EC2 Instances
Question
You have an application that consists of the following setup. · An EC2 Instance that supports the main front-end part of the application. · An EC2 Instance that is used to process Images. You are planning to use a load balancer to route requests based on the type of request and then route them to the respective servers.
How can you accomplish this? Choose 2 answers from the options given below.
Answers
Explanations
Click on the arrows to vote for the correct answer
A. B. C. D.Answer - B and D.
Here you need to route traffic based on the type of URL request.
So based on the URL request, the request could go to either EC2 Instance.
For this, you need to create an Application Load balancer and target groups for each EC2 Instance.
Options A and C are incorrect because a Classic Load Balancer would not help in this case.
For more information on Application Load Balancers, please refer to the below URL.
https://docs.aws.amazon.com/elasticloadbalancing/latest/application/introduction.htmlTo accomplish this, you can use an Application Load Balancer (ALB) and different target groups.
An ALB can route requests to different target groups based on the content of the request. For example, you could use path-based routing to route requests to different target groups based on the URL path, or use host-based routing to route requests based on the domain name in the request.
To set this up, you would create an ALB and configure listeners for the different types of requests that your application supports. For example, you might create a listener that routes requests with a path starting with /images to the target group associated with the image processing EC2 instance, and another listener that routes all other requests to the target group associated with the main front-end EC2 instance.
You would also need to create different target groups, one for each type of request that your application supports. Each target group would include the EC2 instances that are capable of handling that type of request. In this case, you would create two target groups: one for the main front-end EC2 instance and one for the image processing EC2 instance.
By using an ALB with different target groups, you can efficiently route requests to the appropriate server based on the type of request. This can help improve the performance and scalability of your application.
Creating a Classic load balancer or a TCP listener is not the recommended solution for this scenario, as they do not support advanced routing features and target groups. Classic load balancers route traffic based on IP addresses and ports, and do not support advanced routing features like path-based or host-based routing. TCP listeners can only route based on ports and do not support advanced routing features like path-based or host-based routing.
