In a Microservices architecture, Services are dynamic, distributed and present in large numbers. It is needed to have a good Service discovery solution to address this dynamic problem. In this blog, I will cover basics of Service discovery and using Consul to do Service discovery.

What is Service discovery?

Service discovery should provide the following:

1. Discovery – Services need to discover each other to get IP address and port detail to communicate with other services in the cluster.
2. Health check – Only healthy services should participate in handling traffic, unhealthy services need to be dynamically pruned out.
3. Load balancing – Traffic destined to a particular service should be dynamically load balanced to all instances providing the particular service.

Following are the critical components of Service discovery:

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