Stencil.js Backup Recovery Strategy — วางแผน Backup และ Recovery สำหรับ Web Components

Stencil.js Backup Recovery

Stencil.js Web Components Backup Recovery Version Control npm Registry CI/CD Rollback Disaster Recovery RPO RTO Semantic Versioning

Asset	Backup Method	Frequency	Storage	Recovery Time
Source Code	Git (Distributed)	ทุก Commit	GitHub/GitLab + Local	ทันที (git clone)
Build Artifacts	npm Registry / Artifactory	ทุก Release	npm + S3 Backup	5-10 นาที
CI/CD Config	Git (IaC)	ทุก Change	Git Repository	10-30 นาที
Documentation	Git + Static Site	ทุก Release	Git + CDN	5 นาที
Environment Config	Secret Manager	ทุก Change	AWS SM / Vault	5 นาที

Version Control Strategy

# === Stencil.js Version Control & Release ===



# Semantic Versioning for Component Library

# MAJOR.MINOR.PATCH

# 1.0.0 → 1.0.1 (Bug fix, backward compatible)

# 1.0.0 → 1.1.0 (New feature, backward compatible)

# 1.0.0 → 2.0.0 (Breaking change)



# Git Branching Strategy

# main → Production releases (tagged)

# develop → Integration branch

# feature/* → New components/features

# hotfix/* → Emergency fixes

# release/* → Release preparation



# Release Process

# 1. Feature complete → merge to develop

# 2. Create release/1.2.0 branch from develop

# 3. Final testing, update CHANGELOG

# 4. Merge to main, tag v1.2.0

# 5. npm publish

# 6. Merge back to develop



from dataclasses import dataclass



@dataclass

class ReleaseStep:

 step: int

 action: str

 command: str

 verify: str

 rollback: str



release_steps = [

 ReleaseStep(1, "Create Release Branch",

 "git checkout -b release/1.2.0 develop",

 "git branch → release/1.2.0",

 "git branch -D release/1.2.0"),

 ReleaseStep(2, "Update Version",

 "npm version minor → 1.2.0",

 "cat package.json | grep version",

 "git revert HEAD"),

 ReleaseStep(3, "Build & Test",

 "npm run build && npm test",

 "All tests pass, dist/ generated",

 "Fix bugs, rebuild"),

 ReleaseStep(4, "Merge to Main & Tag",

 "git checkout main && git merge release/1.2.0 && git tag v1.2.0",

 "git log --oneline -5 && git tag -l",

 "git revert HEAD && git tag -d v1.2.0"),

 ReleaseStep(5, "Publish to npm",

 "npm publish --access public",

 "npm view @myorg/components version",

 "npm unpublish @myorg/components@1.2.0 (within 72h)"),

 ReleaseStep(6, "Deploy to CDN",

 "aws s3 sync dist/ s3://cdn/components/1.2.0/",

 "curl https://cdn.example.com/components/1.2.0/",

 "Update CDN pointer to 1.1.0"),

]



print("=== Release Steps ===")

for s in release_steps:

 print(f"\n Step {s.step}: {s.action}")

 print(f" Command: {s.command}")

 print(f" Verify: {s.verify}")

 print(f" Rollback: {s.rollback}")

Rollback Strategies

# === Rollback Strategies ===



@dataclass

class RollbackStrategy:

 strategy: str

 when: str

 steps: str

 time: str

 risk: str



strategies = [

 RollbackStrategy("npm Version Rollback",

 "Component ใหม่มี Bug หลัง Publish",

 "1. npm unpublish (< 72h) หรือ npm deprecate\n"

 "2. Fix bug → npm publish patch version\n"

 "3. แจ้ง Consumer อัพเดท",

 "10-30 นาที",

 "Consumer ที่ Install แล้วยังได้ Version เก่า"),

 RollbackStrategy("Git Revert",

 "Commit ที่ Merge แล้วมีปัญหา",

 "1. git revert \n"

 "2. Push revert commit\n"

 "3. CI/CD auto-build & test",

 "5-10 นาที",

 "History ยังอยู่ ปลอดภัย"),

 RollbackStrategy("CDN Version Switch",

 "Component บน CDN มีปัญหา",

 "1. อัพเดท CDN pointer จาก /1.2.0/ → /1.1.0/\n"

 "2. Invalidate CDN Cache\n"

 "3. ยืนยันว่า Consumer ได้ Version เก่า",

 "5 นาที",

 "Cache Propagation อาจใช้เวลา"),

 RollbackStrategy("Feature Flag",

 "Feature ใหม่ใน Component มีปัญหา",

 "1. ปิด Feature Flag → Feature หายทันที\n"

 "2. ไม่ต้อง Redeploy\n"

 "3. Fix bug → เปิด Flag กลับ",

 "ทันที (< 1 นาที)",

 "ต้องออกแบบ Feature Flag ตั้งแต่แรก"),

 RollbackStrategy("Blue-Green Deploy",

 "Deployment ใหม่ทั้งชุดมีปัญหา",

 "1. สลับ Traffic จาก Green (new) → Blue (old)\n"

 "2. Green ยังอยู่ Debug ได้\n"

 "3. Fix → Deploy Green ใหม่ → สลับกลับ",

 "1-5 นาที",

 "ต้องมี Infrastructure 2 ชุด"),

]



print("=== Rollback Strategies ===")

for s in strategies:

 print(f"\n [{s.strategy}] When: {s.when}")

 print(f" Steps: {s.steps}")

 print(f" Time: {s.time}")

 print(f" Risk: {s.risk}")

Disaster Recovery

# === Disaster Recovery Plan ===



@dataclass

class DRScenario:

 scenario: str

 impact: str

 rpo: str

 rto: str

 recovery: str



scenarios = [

 DRScenario("npm Registry Down",

 "ไม่สามารถ Install Component ใหม่",

 "0 (ไม่มีข้อมูลหาย)",

 "10 นาที",

 "ใช้ Local npm Cache, Verdaccio Mirror, หรือ Install จาก Git"),

 DRScenario("Git Server Down",

 "ไม่สามารถ Push/Pull Code",

 "0 (ทุกคนมี Local Clone)",

 "ทันที (Work Local)",

 "ทำงานต่อ Local รอ Server กลับมา Push"),

 DRScenario("CI/CD Pipeline Down",

 "ไม่สามารถ Build/Test/Deploy อัตโนมัติ",

 "0",

 "30 นาที",

 "Build Local: npm run build, Test: npm test, Publish Manual"),

 DRScenario("CDN Down",

 "Consumer ไม่สามารถโหลด Component",

 "0",

 "5-30 นาที",

 "สลับ CDN Provider, Self-host, หรือ npm Install แทน CDN"),

 DRScenario("Critical Bug in Production",

 "Component พังใน Production ของ Consumer",

 "ไม่เกิน 1 ชั่วโมง",

 "30 นาที",

 "Rollback Version + Hotfix Branch + Emergency Release"),

]



print("=== DR Scenarios ===")

for d in scenarios:

 print(f"\n [{d.scenario}]")

 print(f" Impact: {d.impact}")

 print(f" RPO: {d.rpo} | RTO: {d.rto}")

 print(f" Recovery: {d.recovery}")