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Discussion on: Let's talk about Health Checks

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Phil Ashby

Nicely done! We are currently implementing health checks in our microservice platform at work, and have chosen to support two variants:

  • internal: similar to your description above, this ensures the service is able to accept requests itself.
  • external: as an extension to the internal check, this also passes on the healthcheck call to dependant services, ensuring the end-end chain of services are able to accept requests.

We added the external check for use by platform monitoring, avoiding the need to have internal network access, and as a way to dynamically record request routing, as we collect service IDs and versions in results. This helps with configuration drift detection / reconciliation in a complex service mesh platform.