Skill

performance

Performance optimization — frontend Core Web Vitals, backend profiling, database tuning, load testing

Install

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

Tool Access

This skill is limited to using the following tools:

ReadGrepGlobBash

Preview

- **Measure before optimizing**: Guessing is expensive; profiling is cheap.

Supporting Assets

references/backend-performance.mdreferences/connection-performance.mdreferences/database-performance.mdreferences/frontend-performance.mdscripts/run-lighthouse.sh

SKILL.md

Similar Skills

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

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

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

Core Principles

Measure before optimizing: Guessing is expensive; profiling is cheap.

Database is usually the bottleneck: 90% of API latency is DB time.

Response time budget: Break down your 200ms target into components.

N+1 kills at scale: 10 users: unnoticeable. 1000 users: outage.

Core Web Vitals are ranking signals: LCP, CLS, INP affect SEO and conversion.

References

references/frontend-performance.md — Core Web Vitals, bundle optimization, lazy loading

references/backend-performance.md — Profiling Node/Python/Go, N+1, connection pooling

references/database-performance.md — EXPLAIN ANALYZE, indexing strategies, query optimization, partitioning

references/connection-performance.md — Connection pooling, prepared statements, batch operations, read replicas

references/load-testing-reference.md — k6, Gatling, interpreting results, bottlenecks

Performance Skill

Core Principles

Measure before optimizing: Guessing is expensive; profiling is cheap.
Database is usually the bottleneck: 90% of API latency is DB time.
Response time budget: Break down your 200ms target into components.
N+1 kills at scale: 10 users: unnoticeable. 1000 users: outage.
Core Web Vitals are ranking signals: LCP, CLS, INP affect SEO and conversion.

References

references/frontend-performance.md — Core Web Vitals, bundle optimization, lazy loading
references/backend-performance.md — Profiling Node/Python/Go, N+1, connection pooling
references/database-performance.md — EXPLAIN ANALYZE, indexing strategies, query optimization, partitioning
references/connection-performance.md — Connection pooling, prepared statements, batch operations, read replicas
references/load-testing-reference.md — k6, Gatling, interpreting results, bottlenecks

Scripts

scripts/run-lighthouse.sh — Runs Lighthouse audit against a URL