Observability Advanced
Telemetry Pipeline Builder
Build a bounded telemetry path for structured logs, trace context, sampling, batching, and safe attributes.
- Time
- 9-11 minutes
- Concept
- Telemetry pipelines and context propagation
Backend concept
Observability & Incident Triage
Metrics, logs, traces, alerts, service-level symptoms, and high-signal debugging during incidents.
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Key takeaway
Metrics, logs, traces, alerts, service-level symptoms, and high-signal debugging during incidents. Start with the related games below when you want to turn the definition into practice.
Why this matters
Production systems need evidence fast; guessing during incidents burns time and confidence.
How to practice
Choose signals that isolate customer impact, dependency failures, and bad deployments.
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Start a focused review session for Observability & Incident Triage.
Learning objectives
- Propagate context across synchronous and asynchronous boundaries.
- Keep telemetry failure from blocking business traffic.
- Control sampling, cardinality, and sensitive attributes.
- Prioritize user-facing service indicators.
- Interpret multi-window burn-rate alerts.
- Define evidence-based mitigation exit criteria.
Common mistakes to avoid
- Blocking requests on telemetry export.
- Using unbounded attribute values.
- Sampling away rare failures.
- Paging only on host CPU.
- Averaging away fast burn.
- Ending an incident after one green minute.
Games for Observability & Incident Triage
Start with the first game, then use local review history to revisit missed decisions.
Observability Advanced
SLO Incident Commander
Direct incident response with RED, USE, service-level indicators, burn rates, and explicit recovery criteria.
- Time
- 9-12 minutes
- Concept
- Service objectives and incident command
Spring Advanced
Spring Production Readiness Drill
Sequence Spring Security, health probes, PostgreSQL Testcontainers, mitigation, and incident recovery.
- Time
- 9-12 minutes
- Concept
- Spring production readiness
Reliability Intermediate
Observability Incident Triage
Triage production incidents by choosing useful metrics, logs, traces, queue signals, database evidence, request ids, and alerting strategies.
- Time
- 6-9 minutes
- Concept
- Production observability, incident triage, metrics, logs, traces, and alerts
Reliability Intermediate
Circuit Breaker Clinic
Diagnose dependency failures and choose circuit breaker, timeout, fallback, retry, half-open, and bulkhead strategies that reduce blast radius.
- Time
- 6-9 minutes
- Concept
- Circuit breakers, timeouts, retries, fallbacks, and dependency isolation
Scaling Intermediate
Load Balancer Challenge
Route simulated traffic across backend servers using round robin, weighted round robin, least connections, and random strategies.
- Time
- 6-10 minutes
- Concept
- Load balancing strategies