Ahmed Baha Eddine Alimi - B23-SD-01 [Lab17]

[3llimi]

Lab 17 — Cloudflare Workers Edge Deployment

What was done:

• Created and deployed a Workers-native TypeScript API (edge-api) using Wrangler and Cloudflare Workers (not Docker-based), with public endpoint:
  • https://edge-api.3llimi69.workers.dev
• Implemented and validated 6 HTTP routes:
  • / — app metadata + route listing
  • /health — service health response
  • /edge — Cloudflare edge request metadata
  • /config — non-sensitive environment configuration
  • /secret-check — secret presence verification (boolean only)
  • /counter — persisted KV-backed visit counter
• Verified public edge metadata behavior from deployed Worker:
  • colo: FRA, country: DE, city: Frankfurt am Main, asn: 214036, httpProtocol: HTTP/1.1, tlsVersion: TLSv1.3
• Configured and used plaintext vars in Worker config:
  • APP_NAME="edge-api"
  • COURSE_NAME="DevOps-Core-Course"
• Configured and validated secrets with Wrangler:
  • API_TOKEN
  • ADMIN_EMAIL
  • Confirmed via /secret-check response: apiTokenConfigured: true, adminEmailConfigured: true
• Implemented Workers KV persistence:
  • Reused existing KV namespace SETTINGS (create command returned “already exists”, then IDs retrieved via wrangler kv namespace list)
  • Bound production + preview IDs in wrangler.jsonc
  • Verified persistence with /counter incrementing across calls and deployments (visits: 4 then visits: 5)
• Performed observability and operations validation:
  • Captured request logs via npx wrangler tail --format pretty
  • Confirmed request path + edge metadata logs (/, /edge, /counter)
  • Reviewed Cloudflare dashboard metrics (requests/errors/CPU/wall time/request duration)
• Executed multi-version deployment + rollback validation:
  • Deployed v3 test version (Current Version ID: 09e0ab26-58df-400c-8d45-65ed8eccfc43)
  • Confirmed / message changed to "Hello from Cloudflare Workers v3"
  • Rolled back with npx wrangler rollback to 9392bf7a-2fe0-4464-8d8a-cde1b8bedbe9
  • Re-verified / message returned to "Hello from Cloudflare Workers"
• Documented full lab implementation and evidence in WORKERS.md with in-section outputs/screenshots and Kubernetes vs Workers comparison.

Outcome:

• Lab 17 requirements completed for all main sections:
  • Cloudflare setup
  • Worker API implementation and deployment
  • Edge metadata validation
  • Variables, secrets, and KV persistence
  • Observability, deployment history, and rollback
  • Documentation and Kubernetes vs Cloudflare Workers comparison
• Final deployed and validated Worker remains publicly accessible at:
  • https://edge-api.3llimi69.workers.dev