Service discovery

Instances register themselves and clients look up current addresses, through DNS, a registry or the orchestrator. Static IP lists break as soon as auto-scaling replaces instances.

Where it shows up in real systems

  • Service discovery

    Clients look up where a service lives instead of hard-coding addresses, so instances can come and go during scaling and failures.

    In production: Consul, Kubernetes Services, AWS Cloud Map, Eureka

See it break, then fix it

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