Guest post originally published on NGINX's blog by Robert Haynes of F5 Just as regular check‑ups with a doctor are an important part of staying healthy…

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NGINX uses passive health checks to shield your application users from outages by automatically diverting traffic away from servers that don’t respond to requests. Passive health checks can detect unhealthy servers even before they fail to process a request. They help prevent users from experiencing outages due to server timeouts.

Active or passive health checks: which is right for you?

Conclusion: Pick the Health Checks that Match Your Application Requirements