Availability Of DNS And Load Balancing
Learn about the availability of DNS load balancing.
We'll cover the following
Load balancing
Almost everything we build today uses horizontally scalable farms of instances that implement request/reply semantics. Horizontal scaling helps with overall capacity and resilience, but it introduces the need for load balancing. Load balancing is all about distributing requests across a pool of instances to serve all requests correctly in the shortest possible time. In the previous section we looked at DNS round-robin as a means of load balancing. In this section we will consider active load balancing. This involves a piece of hardware or software inline between the caller and provider instances, as illustrated in the figure below.
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