Individual skill

performance-capacity

Plan, diagnose, and verify performance budgets, latency targets, load tests, capacity estimates, bottleneck analysis, caching strategy, query efficiency, queue throughput, and regression gates. Use when a feature may be slow, a system must scale, a performance regression is suspected, or release readiness depends on throughput, cost, memory, CPU, or response time.

skills/performance-capacity/SKILL.md

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# Performance Capacity

## Purpose

Use this skill to make performance measurable before optimizing. It turns vague "make it faster" work into budgets, probes, bottleneck hypotheses, and regression gates.

## Baseline First

Before changing code, capture:

1. User-facing operation or background job under test.
2. Current p50/p95/p99 latency or throughput.
3. Data size and concurrency assumptions.
4. Resource limits: CPU, memory, IO, network, database, queue.
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