Amazon Web Services (AWS) offers a highly available, scalable, and fully managed Application Load Balancer (ALB) service. This load balancer operates at the request level (layer 7 in the OSI model), routing traffic to one of the registered targets, such as EC2 instances, containers, or IP addresses, based on the rules that you define. One of the key benefits of using an ALB is its ability to handle advanced request routing, such as routing based on the content of the request, allowing you to build sophisticated traffic management policies for your applications. For example, you can set up an ALB to route traffic to different target groups based on the URL path of the incoming request, the host header, or even the query string parameters. In addition to request routing, ALBs also provide features such as automatic scaling, TLS/SSL offloading, and integration with other AWS services, such as Amazon ECS, Amazon EKS, and AWS Fargate. Another advantage of using an ALB is its ability to heal
A web server is a computer system that is responsible for hosting websites. It stores the files that make up a website, such as HTML, CSS, JavaScript, and images, and serves them to users who request them over the internet. When a user types in a website's URL (e.g., www.example.com) into their web browser, the browser sends a request to the web server to retrieve the files for the website. The web server then retrieves the files and sends them back to the browser, which then renders the website on the user's device. Web servers typically run specialized software, such as Apache or nginx, which is designed to handle HTTP requests and serve website content. They are often connected to the internet through high-speed connections and are designed to handle many requests simultaneously. Here's an example of how a web server works: A user opens their web browser and types in the URL of a website they want to visit (e.g., www.example.com). The browser sends an HTTP request to t