Service Discovery Registration Pattern involves services automatically registering themselves with a service registry when they start up. This registry, like Eureka or Consul, acts as a centralized database where service instances report their availability. Clients or other services then query the registry to discover available instances. There are two common approaches:
Self-Registration: Services register themselves directly with the registry, handling both registration and deregistration when they start or stop.
Third-Party Registration: A separate component, such as a sidecar or orchestrator (e.g., Kubernetes), manages the registration of services with the registry. This pattern enables dynamic service discovery, allowing systems to adapt to scaling, load balancing, and failures without manual intervention.
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