Antigravity Agent
190 lines
5.8 KiB
Markdown
190 lines
5.8 KiB
Markdown
---
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id: wiki-2026-0508-성능-및-seo-최적화-프로젝트
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title: 성능 및 SEO 최적화 프로젝트
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category: 10_Wiki/Topics
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status: verified
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canonical_id: self
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aliases: [Performance and SEO Project, Web Vitals Optimization Project]
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duplicate_of: none
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source_trust_level: A
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confidence_score: 0.9
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verification_status: applied
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tags: [project, performance, seo, web-vitals, lighthouse]
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raw_sources: []
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last_reinforced: 2026-05-10
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github_commit: pending
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tech_stack:
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language: typescript
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framework: nextjs
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---
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# 성능 및 SEO 최적화 프로젝트
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## 매 한 줄
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> **"매 Web Vitals + SEO 의 simultaneous improvement project"**. 매 Lighthouse 60→95+ 의 typical scope — LCP/INP/CLS 의 budget 의 set, render-blocking 의 eliminate, structured data 의 add, Core Web Vitals 의 Google ranking signal 의 secure.
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## 매 핵심
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### 매 project goals (KPI)
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- **LCP** ≤ 2.5s (good).
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- **INP** ≤ 200ms (replaces FID, 2024+).
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- **CLS** ≤ 0.1.
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- **Lighthouse Performance** ≥ 90.
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- **organic traffic** +30% (post 1Q).
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- **conversion** +10%.
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### 매 phase plan
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1. **Audit** (week 1): Lighthouse + WebPageTest + RUM (CrUX) baseline.
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2. **Quick wins** (week 2-3): image lazy + dimensions, font-display, defer JS.
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3. **Architecture** (week 4-6): RSC migration, route-split, edge caching.
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4. **SEO** (week 4-6): meta + OG + JSON-LD + sitemap + canonical.
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5. **Monitoring** (ongoing): Vercel Speed Insights / SpeedCurve / Sentry.
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### 매 SEO checklist
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- `<title>` (50-60 chars), `<meta description>` (150-160).
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- Open Graph + Twitter Card.
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- JSON-LD (Article / Product / Breadcrumb).
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- canonical, hreflang, robots.
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- sitemap.xml + robots.txt.
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- semantic HTML (h1 unique, landmark).
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- internal link graph.
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## 💻 패턴
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### Performance budget (CI)
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```js
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// lighthouserc.js
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module.exports = {
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ci: {
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collect: { url: ['https://staging.example.com/'], numberOfRuns: 3 },
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assert: {
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assertions: {
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'categories:performance': ['error', { minScore: 0.9 }],
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'largest-contentful-paint': ['error', { maxNumericValue: 2500 }],
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'cumulative-layout-shift': ['error', { maxNumericValue: 0.1 }],
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'interaction-to-next-paint': ['error', { maxNumericValue: 200 }],
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},
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},
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upload: { target: 'temporary-public-storage' },
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},
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};
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```
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### Next.js metadata (App Router)
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```tsx
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// app/blog/[slug]/page.tsx
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export async function generateMetadata({ params }): Promise<Metadata> {
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const post = await getPost(params.slug);
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return {
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title: `${post.title} | MySite`,
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description: post.excerpt,
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alternates: { canonical: `https://mysite.com/blog/${post.slug}` },
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openGraph: {
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title: post.title,
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description: post.excerpt,
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images: [{ url: post.cover, width: 1200, height: 630 }],
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type: 'article',
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},
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twitter: { card: 'summary_large_image' },
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};
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}
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```
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### JSON-LD structured data
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```tsx
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function ArticleJsonLd({ post }: { post: Post }) {
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const ld = {
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'@context': 'https://schema.org',
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'@type': 'Article',
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headline: post.title,
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image: [post.cover],
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datePublished: post.publishedAt,
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author: [{ '@type': 'Person', name: post.author }],
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};
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return <script type="application/ld+json"
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dangerouslySetInnerHTML={{ __html: JSON.stringify(ld) }} />;
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}
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```
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### Image optimization
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```tsx
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import Image from 'next/image';
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<Image src="/hero.jpg" alt="hero" width={1200} height={630}
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priority sizes="(max-width: 768px) 100vw, 1200px"
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placeholder="blur" blurDataURL={post.lqip} />
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```
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### Font optimization (Next.js)
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```tsx
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import { Inter } from 'next/font/google';
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const inter = Inter({ subsets: ['latin'], display: 'swap', preload: true });
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export default function Layout({ children }) {
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return <html className={inter.className}>{children}</html>;
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}
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```
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### Web Vitals reporting
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```tsx
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// app/web-vitals.tsx
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'use client';
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import { useReportWebVitals } from 'next/web-vitals';
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export function WebVitals() {
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useReportWebVitals((m) => {
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fetch('/api/vitals', { method: 'POST', body: JSON.stringify(m), keepalive: true });
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});
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return null;
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}
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```
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### Sitemap (Next.js 15)
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```tsx
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// app/sitemap.ts
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export default async function sitemap() {
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const posts = await getAllPosts();
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return posts.map(p => ({
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url: `https://mysite.com/blog/${p.slug}`,
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lastModified: p.updatedAt,
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changeFrequency: 'weekly',
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priority: 0.7,
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}));
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}
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```
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## 매 결정 기준
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| 문제 | Action |
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|---|---|
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| LCP 느림 | hero image preload + `priority` + RSC streaming |
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| INP 느림 | hydration 의 reduce (RSC), long task 의 break |
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| CLS 발생 | image/font dimensions, ad slot reserve |
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| 매 SSR 필요 | Next.js App Router (RSC) |
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| 매 SEO 우선 | static generation (`generateStaticParams`) |
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| 매 대량 page | ISR (`revalidate`) |
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**기본값**: 매 Next.js 15 (App Router) + Image/Font 의 use, Lighthouse CI 의 budget enforce, JSON-LD 의 add.
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## 🔗 Graph
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- 부모: [[브라우저 렌더링 파이프라인(Critical Rendering Path)]] · [[SEO 기초]]
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- 변형: [[Web Vitals]] · [[Lighthouse CI]]
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- 응용: [[Next.js App Router]] · [[Edge Caching]]
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- Adjacent: [[Schema.org]] · [[Open Graph]]
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## 🤖 LLM 활용
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**언제**: Lighthouse report 의 prioritize, regression 의 diagnose, meta tag 의 generate.
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**언제 X**: real RUM data analysis (BigQuery/CrUX 의 use).
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## ❌ 안티패턴
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- **Lighthouse 만 의 measure**: 매 lab data — 매 RUM (CrUX) 의 substitute.
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- **`priority` 의 모든 image**: 매 LCP 의 confused — 매 hero 만.
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- **Empty meta description**: 매 SERP 의 random snippet.
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- **Duplicate H1**: 매 SEO penalty — 매 unique 의 keep.
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## 🧪 검증 / 중복
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- Verified (web.dev/learn/performance, Next.js 15 docs, Google Search Central, Lighthouse CI docs).
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- 신뢰도 A.
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## 🕓 Changelog
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| 날짜 | 변경 |
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|---|---|
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| 2026-05-08 | Phase 1 |
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| 2026-05-10 | Manual cleanup — Web Vitals + Next.js metadata + Lighthouse CI 의 정리 |
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