Client-side load balancing is used to balance incoming loads to the microservices because each service is typically deployed as multiple instances, so, for fault-tolerance and load-sharing, how do we decide which service instance to use?
Implementing client-side load balancing provides a way to distribute the load across multiple instances. The Discovery server returns the location of these multiple instances. The multiple instances are only for resilience and load-sharing, but the client needs to pick only one instance of the service. So, Spring Cloud Netflix Ribbon comes into the picture and provides several algorithms for client-side load-balancing. Spring also provides a smart RestTemplate ...
