Description: DNS load balancing is a method of distributing traffic among multiple servers using the Domain Name System (DNS) to direct user requests. This approach allows access requests to a website or service to be evenly distributed across several servers, thereby improving the availability and performance of the service. By using DNS records, such as A or CNAME records, multiple IP addresses can be assigned to a single domain name. When a user makes a request, the DNS server responds with one of the available IP addresses, allowing the workload to be spread across the servers. This method not only helps prevent overload on a single server but also provides redundancy, as if one server fails, requests can be redirected to other active servers. Additionally, DNS load balancing can optimize user experience by directing requests to the geographically closest server, thus reducing latency. In a cloud environment, this technique is especially valuable as it allows for dynamic scaling of resources based on demand, ensuring optimal performance even during traffic spikes.
