When something fails across several services, how do you find which step caused it?
- Module
- 03/05
- To read
- ~5 min
A customer said an automated portfolio manager sold their assets without warning, and engineers set out to find out why. What do you think slowed them down the most?
In the module you make your guess first, then read what happened and why.
Unified Trace Context Propagation
Structured High-Cardinality Span Attributes
Full-Fidelity Decision Replay Harness
Anomaly Metric Thresholds & Alerting
A plan for seeing inside your app
A spec for your own app, as a text file you download. The module also gives you the prompt for Claude Code, Codex or Antigravity, a checklist to check what it built, and recommended skills.
- Logs, metrics and traces
- Queues and background jobs