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Practical Microservices by Umesh Ram Sharma

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Discovery service need

After looking at the downfall of the DNS performance in a dynamic environment, there is a need for a service that is dedicated to this particular purpose, and it should provide the following facilities:

  • Services should be able to register or deregister their availability
  • Services should be able to communicate their changes to other services
  • Services should be able to locate a single instance of a particular service

These services are provided by a discovery service. A discovery service is kind of a database of service instances available in a system. Each microservice that comes up and goes down should register or deregister here. Any microservice can get the meta-information, which can include host, port, service ...

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