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What Is a Health Check?

A health check is a way to verify whether a service is actually working well enough to be trusted, not just whether a container happens to be running.

That distinction matters because a service can be technically “up” while still being broken for users if it cannot reach a dependency, answer requests correctly, or complete its real job.

Health checks matter because they turn vague guesses into a more repeatable signal about whether the stack is functioning properly.

What a health check might verify

  • that the app responds on an expected endpoint
  • that a container is not stuck in a restart loop
  • that dependencies are reachable enough for the service to work
  • that a key user-facing function still behaves correctly

Why it matters in TryDirect

Health checks are part of how teams move from “deployment succeeded” to “this system is actually healthy enough to operate.” They show up in Status Panel workflows and in practical debugging guides for live stacks.

Next article: What Is Vault?