Separate levels of verification
Control external availability, certificate, required page text, and key dependencies. For the application, add background task status, disk space, and backup results. A public health endpoint should not reveal secrets or detailed internal configuration.
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Check the business scenario carefully
For forms, use an agreed-upon test route that doesn't generate real sales and doesn't clog up the pipeline. Determine the frequency according to the criticality and cost of the inspection. Separately monitor the fact of delivery, if it is the result of the script. A test without a final check can create a false sense of reliability.
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Make the notification actionable
The message should contain the problem, the time, the necessary context and the person responsible. Define revalidation, trigger threshold, and escalation. Separate short erratic outages from long periods of unavailability, but don't hide a recurring problem. Periodically check the notification channel itself.
Should I be notified of every failed request?
Not necessarily. The rules should reduce the noise and at the same time reveal issues affecting users or data in a timely manner.