docs(10_Wiki): 위키 전체 재구성 — Topic_* 폴더를 4개 카테고리로 통합 + 대규모 중복 제거
Topic_Agent/Topic_Blog/Topics/Topics_Biz/Topics_Meeting/Topics_Rag의 마크다운 지식 문서를 Topic_General/Topic_Programming/Topic_Graphic/Topic_Business 4개 카테고리로 재분류. - 중복 제거: frontmatter의 status:duplicate/merged + duplicate_of/redirect_to 필드로 자기 자신을 중복으로 선언한 리다이렉트 stub 1032개 제거, 완전 동일 내용 파일 472개 제거, 동일 파일명·다른 내용 충돌 시 더 큰(완전한) 버전만 유지(162개 제거) — 총 1639개 중복 제거. - 분류: 폴더 단위로 명확한 항목(AI_and_ML/Coding/Architecture 등 → Programming, Comfyui/Visual_Effects → Graphic, Topics_Biz/Topics_Meeting/사업 등 → Business, Poetic_Blog_Writing/창의성/Game_Design 등 → General)은 폴더 우선순위로, 나머지 혼재 폴더(Topic_Agent/Topic_Blog/Topics 루트/Thinking & Reasoning/Other/UI_UX_Assets)는 title/tags 키워드 스코어링으로 파일 단위 분류(불명확한 경우 General로 폴백). 원본 폴더명은 "From_*" 서브폴더로 보존해 추적 가능성 유지. - 최종 배치: Programming 2784 / General 1608 / Graphic 285 / Business 249 = 4926개 문서. - 에이전트 운영 상태(.astra/.agent/.obsidian/sessions/memory/_company/docs/lessons/_shared/src)는 지식 콘텐츠가 아니므로 재분류 대상에서 제외하고 원위치 유지. - Topics/Topic_email(상위 보호 폴더 Topic_email과 파일명 100% 중복) 삭제 — 보호 폴더 자체는 미변경. - 완전히 비게 된 Topic_Agent/Topic_Blog/Topics_Biz/Topics_Rag 폴더 제거.
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Antigravity Agent
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---
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id: wiki-2026-0508-e-commerce-platforms
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title: E-commerce Platforms
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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: [ecommerce, online-store-platform, headless-commerce]
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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: [ecommerce, shopify, stripe, headless]
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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: shopify-hydrogen/medusa/stripe
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---
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# E-commerce Platforms
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## 매 한 줄
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> **"매 e-commerce 의 매 catalog × cart × checkout × fulfillment × payments × tax + 매 every regional edge case"**. 2026 의 매 SaaS (Shopify, BigCommerce, commercetools), 매 headless (Hydrogen, Medusa.js, Saleor, Vendure), 매 PSP (Stripe, Adyen) 가 dominant — 매 buy-vs-build 의 매 default 의 buy.
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## 매 핵심
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### 매 platform tiers
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1. **All-in-one SaaS** — Shopify, BigCommerce, Wix. 매 lowest TCO.
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2. **Headless / composable** — Shopify Hydrogen, commercetools, Saleor, Medusa.js, Vendure. 매 custom UX 필요.
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3. **Self-hosted / OSS** — Medusa, Vendure, Saleor (Apache 2 / MIT).
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4. **Marketplace SaaS** — Mirakl, Sharetribe.
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5. **B2B-specific** — Spryker, BigCommerce B2B, commercetools.
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### 매 PSP / payments
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- **Stripe** — global default, broad APM coverage.
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- **Adyen** — enterprise / omnichannel.
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- **PayPal/Braintree, Klarna, Afterpay, Apple/Google Pay** — APMs.
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- **Crypto / stablecoin** — Coinbase Commerce (niche).
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### 매 cross-cutting concerns
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- **Tax** — Stripe Tax, Avalara, TaxJar (US sales tax post-Wayfair, EU VAT IOSS, UK VAT).
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- **Shipping** — ShipStation, Shippo, EasyPost.
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- **Search** — Algolia, Typesense, Meilisearch.
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- **CMS** — Sanity, Contentful, Storyblok (PIM/CMS hybrid).
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- **Fraud** — Stripe Radar, Riskified, Signifyd.
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## 💻 패턴
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### Stripe Checkout (PCI-light)
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```ts
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import Stripe from 'stripe';
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const stripe = new Stripe(process.env.STRIPE_SECRET!);
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const session = await stripe.checkout.sessions.create({
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mode: 'payment',
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line_items: [{ price: 'price_123', quantity: 2 }],
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automatic_tax: { enabled: true },
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shipping_address_collection: { allowed_countries: ['US', 'GB', 'KR'] },
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success_url: 'https://shop.example.com/success?cs={CHECKOUT_SESSION_ID}',
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cancel_url: 'https://shop.example.com/cart',
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});
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return Response.redirect(session.url!, 303);
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```
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### Stripe webhook (idempotent)
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```ts
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import { headers } from 'next/headers';
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export async function POST(req: Request) {
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const sig = (await headers()).get('stripe-signature')!;
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const body = await req.text();
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const event = stripe.webhooks.constructEvent(body, sig, process.env.STRIPE_WEBHOOK_SECRET!);
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// 매 idempotency: 매 event.id 의 record, 매 already-processed skip
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if (await db.processedEvents.has(event.id)) return new Response(null, { status: 200 });
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switch (event.type) {
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case 'checkout.session.completed':
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await fulfillOrder(event.data.object as Stripe.Checkout.Session);
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break;
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}
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await db.processedEvents.insert(event.id);
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return new Response(null, { status: 200 });
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}
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```
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### Shopify Hydrogen (Storefront API)
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```ts
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import { storefrontClient } from '~/lib/shopify';
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const PRODUCT = `#graphql
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query Product($handle: String!) {
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product(handle: $handle) {
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id title descriptionHtml
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variants(first: 10) { nodes { id price { amount currencyCode } availableForSale } }
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images(first: 5) { nodes { url altText } }
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}
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}`;
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const { data } = await storefrontClient.request(PRODUCT, { variables: { handle } });
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```
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### Medusa.js custom backend
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```ts
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// backend 의 custom plugin
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import { OrderService } from '@medusajs/medusa';
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class FraudGuardService {
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constructor(private orderService: OrderService) {}
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async beforeCapture(orderId: string) {
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const score = await fetch('https://radar/api', { /* … */ }).then(r => r.json());
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if (score.risk > 0.8) await this.orderService.cancel(orderId);
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}
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}
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```
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### Cart state (Server Component + Cookie)
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```ts
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import { cookies } from 'next/headers';
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export async function getCart(): Promise<Cart> {
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const id = (await cookies()).get('cart_id')?.value;
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return id ? storefront.cart.get(id) : storefront.cart.create();
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}
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```
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### Algolia product search index
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```ts
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import { algoliasearch } from 'algoliasearch';
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const client = algoliasearch(APP_ID, ADMIN_KEY);
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await client.saveObjects({
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indexName: 'products',
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objects: products.map(p => ({
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objectID: p.id, title: p.title, brand: p.brand, price: p.price.amount,
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inStock: p.inventory > 0, _tags: p.collections,
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})),
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});
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```
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### Tax (Stripe Tax inline)
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```ts
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const tax = await stripe.tax.calculations.create({
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currency: 'usd',
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line_items: [{ amount: 5000, reference: 'sku_1', tax_behavior: 'exclusive' }],
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customer_details: {
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address: { line1: '...', city: 'Seattle', state: 'WA', postal_code: '98101', country: 'US' },
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address_source: 'shipping',
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},
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});
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```
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### B2B quote → order
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```ts
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// commercetools / Vendure pattern
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const quote = await ct.quotes.create({ customer, lineItems, validUntil: addDays(new Date(), 14) });
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// 매 buyer accept → order 의 transition
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const order = await ct.orders.fromQuote(quote.id);
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```
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## 매 결정 기준
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| 상황 | Approach |
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|---|---|
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| Lean DTC start | Shopify (basic) + Stripe |
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| Custom UX, brand priority | Shopify Hydrogen or Saleor + headless CMS |
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| Self-host / OSS / cost control | Medusa.js or Vendure |
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| Enterprise composable | commercetools + Algolia + Contentful + Adyen |
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| Marketplace | Mirakl or Sharetribe |
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| B2B with quotes/contracts | commercetools / Spryker |
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**기본값**: Shopify for SMB; Hydrogen for premium DTC; commercetools for enterprise composable; Stripe as PSP unless enterprise (then Adyen).
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## 🔗 Graph
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- 부모: [[Web-Architecture]]
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- 변형: [[Headless-Commerce]]
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- Adjacent: [[Algolia]] · [[Sanity]]
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## 🤖 LLM 활용
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**언제**: 매 platform comparison, 매 webhook handler 의 scaffold, 매 GraphQL Storefront query 의 작성, 매 tax/shipping flow explanation, 매 catalog data model design.
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**언제 X**: 매 PCI-DSS / SCA / regional tax 의 final compliance review (legal + Stripe/Adyen docs). 매 fraud rules in production (data scientist + risk team).
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## ❌ 안티패턴
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- **Roll-your-own checkout**: 매 PCI scope explode + tax + APM hell — Stripe/Adyen Checkout 사용.
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- **No webhook idempotency**: 매 duplicate fulfillment / charge — event.id dedupe.
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- **Cart in localStorage only**: 매 multi-device 가 broken — server-side cart.
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- **No automatic_tax**: 매 EU VAT / US Wayfair 의 manual mess.
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- **Storefront API token in client**: 매 secret leak — 매 server-only token.
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- **Sync inventory in serverless cold path**: 매 oversell — event-driven inventory + reservation.
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## 🧪 검증 / 중복
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- Verified (Shopify Hydrogen docs, Medusa.js docs, commercetools docs, Stripe docs, Adyen 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 — e-commerce platform landscape, Shopify/Stripe/headless patterns |
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