SKILL-055 Security, testing, and operations Locked skill

Observability metrics

Measure the four golden signals plus the business events that make you money. Alert on symptoms users feel, not on every internal blip.

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What this skill helps you build

Instrument the handful of numbers that tell you whether the product is healthy — latency, errors, throughput, signups, billing failures — and alert on the ones that hurt.

The production takeaway

Measure the four golden signals plus the business events that make you money. Alert on symptoms users feel, not on every internal blip.

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Inside this skill

The full skill expands these implementation areas with decisions, edge cases, prompts, tests, and framework-specific code.

Security, testing, and operations
What this helps you build

A small, deliberate set of metrics that answer "is the product healthy and is the business working?" — request latency and error rate, background job throughput and failures, plus

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Security, testing, and operations
When to use this

Add metrics once you have real traffic and "is it slow / is it broken?" can't be answered by eyeballing logs. Specifically: You've had an incident you learned about from a customer

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Security, testing, and operations
The core idea

Instrument symptoms users feel and events that move the business , not every internal counter you can imagine. The backbone is the four golden signals — latency, traffic, errors, s

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Unlock the full implementation

Paid access includes the complete skill body, implementation prompt, common mistakes, production checklist, and code examples where this skill includes them.