A developer is creating a web application that will contain five web nodes. The developer's main goal is to ensure the application is always available to the end users. Which of the following should the developer use when designing the web application?
正解:A
Round robin is a load balancing technique that distributes requests among multiple web nodes in a circular order. It ensures that each web node receives an equal amount of requests and improves the availability and performance of the web application. Verified References: [Round robin], [Load balancing]