Competencies: Observability > Metrics
Metrics
Body of Knowledge
| Topic | Description | Relevance | Career Tracks |
|---|---|---|---|
Prometheus Metrics |
PromQL, metric types (counter, gauge, histogram), scraping, federation |
Critical |
SRE, DevOps Engineer, Platform Engineer |
Application Metrics |
Custom metrics, instrumentation, RED method, USE method |
Critical |
SRE, Backend Developer |
Infrastructure Metrics |
CPU, memory, disk, network metrics, node exporter, cAdvisor |
Critical |
SRE, Infrastructure Engineer |
Service Level Indicators |
SLIs, SLOs, error budgets, availability calculations |
Critical |
SRE, Platform Engineer |
Dashboarding |
Grafana, dashboard design, visualization best practices |
High |
SRE, DevOps Engineer |
Alerting Rules |
Alert conditions, routing, silencing, notification channels |
High |
SRE, DevOps Engineer |
Metric Storage |
Time-series databases, retention, downsampling, cardinality |
High |
SRE, Platform Engineer |
Golden Signals |
Latency, traffic, errors, saturation; monitoring best practices |
Critical |
SRE, Backend Developer |
StatsD & Carbon |
Push-based metrics, statsd protocol, Graphite/Carbon backend |
Medium |
SRE, DevOps Engineer |
Custom Exporters |
Writing Prometheus exporters, metrics exposition, collector patterns |
Medium |
SRE, Backend Developer |
Personal Status
| Topic | Level | Evidence | Active Projects | Gaps |
|---|---|---|---|---|
To be populated |
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