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Servers & Infrastructure 2 min read • Published: Updated:

Service monitoring: which metrics to collect and when to send alerts

Building monitoring: user functions, latency, errors, queues, logs, owners and alert delivery checks.

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ALL IT Agency team
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Monitoring should establish whether a service performs its function and what to do when it deviates. Charts help when connected to understandable workflows. Alerts without owners or actions create noise that can conceal real problems.

Define important functions and failure indicators

For a website, important functions may be page access and request handling; for integration, timely record transfer. Agree availability, latency and acceptable errors. Process or port checks show only part of health, so include application-level indicators.

For example, an integration may report no errors while untransferred orders accumulate. It is running but failing its purpose. Define a data-delay measure and an accountable action.

Combine metrics, logs and checks

Metrics show changes over time, logs explain events and tracing can connect requests across components. Choose appropriate detail considering cost and sensitivity. Not every system needs the same data volume.

Check clocks, names, fields and diagnostic access. Without a shared timeline, complaints are hard to correlate with server events. Keep secrets and unnecessary personal data out of logs.

Alerts should lead to action

Agree severity, coverage hours, channel and escalation. Thresholds should account for brief fluctuations and user impact. A trend warning may become a planning task, while core-function failure needs prompt investigation.

Messages should identify service, symptom, time and the relevant procedure. Define cover when the primary owner is unavailable. Automatic chat delivery does not prove someone noticed and accepted the incident.

Test monitoring itself

Create an agreed safe event and test the path to the owner. Also test source or collection loss. No alerts do not establish health when monitoring itself is unavailable.

Hand over dashboards, rules and maintenance procedures. After incidents, review missed signals and noise. Update monitoring when components or core functions change so it reflects the actual service.

Sources and further reading

Key takeaways

  • Metrics should explain whether the required function works.
  • Alerts need owners, actions and delivery testing.

Frequently asked questions

It shows one resource. Include application behaviour, errors and relevant dependencies.

Define rules through impact and required action. Review excess signals so significant problems remain visible.
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