§ 02.06 — Observability
See it before they do.
Logs, metrics and alerts so we catch issues before your customers notice them — live latency graphs, alert-to-resolve sequences and distributed trace waterfalls.
p99 latency · error rate · last 30 min
p99 latency (ms)
errors / min
§ Alerting — Fired and resolved
3 min 53 sec MTTR
From spike detected to root cause found to fix deployed — under four minutes, with a complete audit trail. That's what structured observability buys you.
09:14:02[fired]p99 latency > 50ms for 2m
09:14:03[routed]PagerDuty · on-call notified
09:14:18[ack]Engineer acknowledged
09:16:41[cause]Slow query identified: idx missing
09:17:09[fix]Index created — migration applied
09:17:55[resolved]p99 back to 12ms · alert closed
§ Tracing — Every span counted
Name the slow thing
trace waterfall · GET /api/orders · 45ms
HTTP GET /api/orders
45ms
auth middleware
3ms
db.query orders
30ms
cache.get user
1ms
pg SELECT
28ms
serialize response
6ms
§ Capability — What we instrument
01
Structured logging
JSON logs with trace IDs, correlation and severity levels — searchable in seconds, not hours.
02
Metrics & dashboards
p50/p95/p99 latency, error rates and throughput graphed in real time — one glance tells the story.
03
Alerting
Threshold alerts routed to the right person — PagerDuty, Slack, email — with runbooks attached.
04
Distributed tracing
End-to-end traces from HTTP edge to database query so every slow path has a name, not just a number.
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