Skill

load-testing

Load testing with k6: script with stages (ramp-up/hold/ramp-down), thresholds (p99<500ms, errors<1%), spike test for finding breaking point, k6 in CI with failure on thresholds, soak testing, Locust for Python teams, common bottleneck patterns. Use when verifying performance, finding capacity limits, load testing before launch.

Install

npx claudepluginhub rnavarych/alpha-engineer --plugin billy-milligan

Tool Access

This skill is limited to using the following tools:

ReadGrepGlob

Preview

- Verifying performance before a product launch

Supporting Assets

references/artillery-patterns.mdreferences/k6-patterns.mdreferences/performance-baselines.mdscripts/quick-load-test.sh

SKILL.md

Similar Skills

agent-eval

Compares coding agents like Claude Code and Aider on custom YAML-defined codebase tasks using git worktrees, measuring pass rate, cost, time, and consistency.

everything-claude-code

156.2k

agent-harness-construction

Designs and optimizes AI agent action spaces, tool definitions, observation formats, error recovery, and context for higher task completion rates.

everything-claude-code

156.2k

accessibility

Designs, implements, and audits WCAG 2.2 AA accessible UIs for Web (ARIA/HTML5), iOS (SwiftUI traits), and Android (Compose semantics). Audits code for compliance gaps.

everything-claude-code

156.2k

Stats

Parent Repo Stars9

Parent Repo Forks0

Last CommitFeb 23, 2026

Actions

View Source View Plugin View on GitHub View README

load-testing

Core principles

Test in production-like environment — load test results from dev are meaningless

Warm up before measuring — cold start skews results

Define thresholds before running — not after seeing results

Soak testing finds leaks — sustained load reveals memory leaks and connection exhaustion

Watch the database, not just the app — DB is usually the bottleneck

References available

references/k6-script.md — stages config, custom metrics, thresholds, setup function, think time

references/spike-test.md — sudden VU spike pattern, relaxed thresholds, recovery measurement

references/ci-integration.md — GitHub Actions k6-action, nightly schedule, threshold exit codes

references/observing-load.md — pg_stat_statements during test, DB connection monitoring, Grafana RED

references/threshold-reference.md — p95/p99 targets by endpoint type, error rate budgets by load level

Load Testing

When to use

Verifying performance before a product launch
Finding capacity limits and breaking points
Setting up performance regression in CI
Diagnosing under which load specific endpoints degrade
Comparing performance before and after optimization

Core principles

Test in production-like environment — load test results from dev are meaningless
Warm up before measuring — cold start skews results
Define thresholds before running — not after seeing results
Soak testing finds leaks — sustained load reveals memory leaks and connection exhaustion
Watch the database, not just the app — DB is usually the bottleneck

References available

references/k6-script.md — stages config, custom metrics, thresholds, setup function, think time
references/spike-test.md — sudden VU spike pattern, relaxed thresholds, recovery measurement
references/ci-integration.md — GitHub Actions k6-action, nightly schedule, threshold exit codes
references/observing-load.md — pg_stat_statements during test, DB connection monitoring, Grafana RED
references/threshold-reference.md — p95/p99 targets by endpoint type, error rate budgets by load level