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Internal metrics can't see expired certs, DNS failures, or broken pages your users hit. CloudWatch Synthetics canaries probe your app from outside on a schedule — here's how to set one up, alert on it, and avoid false positives.
A decision guide for choosing between New Relic Synthetics Scripted Browser and API Test monitors: shared constraints, what each can assert, and how to validate a monitor before trusting it.
Step‑by‑step guide to create a New Relic Synthetic API monitor that validates endpoint availability and latency, configures alerting, and includes verification and recovery actions.
Goal I want to use New Relic Synthetics Ping and API tests to monitor a service whose DNS behavior differs between public resolvers and our internal split-DNS setup. The goal is to measure DNS lookup time and validate SSL certificates as seen from a specific resolver, so that certificate-expiry and DNS-latency alerts reflect the same resolution path our user
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