A growing monitor count feels like progress. Sometimes it is. Sometimes it means you are still checking a retired hostname while the new login service has no coverage.
Try a short review of your most important monitors before adding another batch.
Can you explain every target?
For each one, identify the customer-facing capability, the owner, and the expected response. Rename ambiguous labels such as “server 2” when they no longer help someone respond.
Check that URLs still point at the intended environment. A staging endpoint passing reliably is not evidence about production.
What could fail while it stayed green?
A static homepage does not exercise every application dependency. A TCP connection does not establish that an authenticated workflow completes. A successful read does not prove that a background export finishes.
Write down the blind spot. Decide whether it requires a separate check, application metrics, or a periodic controlled workflow test—not necessarily another URL poll.
Does the alert still have an owner?
Delivery destinations age. People leave, webhook credentials rotate, and channels get archived. Use a safe test to verify the route rather than assuming the configuration remains valid because nobody reported a problem.
Review any muted or paused monitors. Keep intentional exceptions documented and remove the ones whose original reason no longer applies.
Are the numbers being interpreted correctly?
Check the interval, timeout, and reporting period. Separate missing observations from confirmed failures. If an uptime figure appears in customer communication, make sure everyone understands its definition.
Our uptime percentage guide explains why a sampled check ratio and exact available time are different measurements.
Make a small, ranked follow-up list
Fix the largest customer-impact gap first. Then correct noisy checks and stale destinations. Leave lower-value cosmetic changes for later.
A useful review ends with fewer unknowns, not necessarily more monitors. You should know what the current setup proves, what it misses, and who responds when it notices a problem.
If you are starting from scratch, use the first-five-monitors guide. If you want to see how the monitoring view fits together before connecting anything, explore the ZnowPulse demo.