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Tech Radar - classification adopt/trial/assess/hold technologies

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SKILL.md

name tech-radar
description Tech Radar - classification adopt/trial/assess/hold technologies

Tech Radar - Technology Lifecycle

Classification technologies selon maturité adoption (inspiré ThoughtWorks).

Concept

Tech Radar = 4 quadrants classification technologies projet/équipe.

Quadrants

1. ADOPT ✅

Définition : Technologies validées, production-ready, recommandées.

Critères :

  • Utilisées ≥2 projets avec succès
  • Team expertise ≥7/10
  • Ecosystem mature (stars >10k, maintenance active)
  • Zero CVE critiques non-patchés

Examples :

  • Python 3.11+
  • FastAPI
  • PostgreSQL 15+
  • Docker
  • React 18+

2. TRIAL 🧪

Définition : Technologies prometteuses, tester sur projets non-critiques.

Critères :

  • Utilisées 1 projet ou POC validé
  • Team expertise 4-6/10
  • Ecosystem croissant (trend +50% downloads 6 mois)
  • Communauté active

Examples :

  • Bun (runtime JS)
  • Astro (framework)
  • Turso (DB edge)
  • HTMX

Action : Créer POC, évaluer DX, benchmarks.

3. ASSESS 🔍

Définition : Technologies watch list, veille active, pas encore testées.

Critères :

  • Jamais utilisées en prod
  • Hype communauté (HN front page, Twitter trends)
  • Potentiel disruptif
  • Pas de benchmarks internes

Examples :

  • Nouvelle LLM (Gemini 2.0)
  • Framework émergent
  • Protocol nouveau (HTTP/3 widespread)

Action : Research, lire docs, suivre releases.

4. HOLD ⛔

Définition : Technologies déconseillées, deprecated, remplacées.

Critères :

  • Maintenance arrêtée
  • CVE critiques non-patchés
  • Ecosystem dying (downloads -50% 6 mois)
  • Superseded par alternative (ADR)

Examples :

  • Python 2.7
  • AngularJS (superseded Angular 2+)
  • MongoDB 3.x (security issues)

Action : Migration plan si utilisé, bloquer nouveaux usages.

Workflow Tech Radar

Quarterly Review (tous les 3 mois) :

1. List technologies actuelles (.plan/tech-radar.json)
2. Check metrics (downloads, CVE, maintenance)
3. Move technologies between quadrants:
   - ASSESS → TRIAL (si POC validé)
   - TRIAL → ADOPT (si prod success)
   - ADOPT → HOLD (si deprecated)
4. Add new ASSESS (veille techno)
5. Update .plan/tech-radar.json
6. Notify team (changelog)

Format tech-radar.json

{
  "updated": "2025-10-27",
  "quadrants": {
    "adopt": [
      {
        "name": "FastAPI",
        "category": "backend-framework",
        "since": "2024-01-15",
        "projects_count": 3,
        "team_expertise": 8.5,
        "notes": "Standard backend Python"
      }
    ],
    "trial": [
      {
        "name": "Bun",
        "category": "runtime",
        "since": "2025-10-01",
        "poc_status": "in-progress",
        "notes": "Tester performance vs Node.js"
      }
    ],
    "assess": [
      {
        "name": "Gemini 2.0",
        "category": "llm",
        "added": "2025-10-27",
        "reason": "Multimodal native, benchmarks prometteurs"
      }
    ],
    "hold": [
      {
        "name": "Python 3.8",
        "category": "language",
        "deprecated_since": "2024-10-01",
        "replacement": "Python 3.11+",
        "migration_deadline": "2025-12-31"
      }
    ]
  }
}

Movement Triggers

ASSESS → TRIAL :

  • Trigger: Research completed + POC planned
  • Action: Create POC project

TRIAL → ADOPT :

  • Trigger: POC success + production deployment
  • Action: Update standards, documentation

ADOPT → HOLD :

  • Trigger: EOL announced OR security issues OR better alternative
  • Action: Migration ADR

Any → HOLD :

  • Trigger: CVE critique + no patch
  • Action: Immediate block

Integration ADR

Lien ADR ↔ Tech Radar :

  • ADR adoption nouvelle techno → Move ASSESS → TRIAL
  • ADR migration techno → Move ADOPT → HOLD
  • Tech Radar quarterly → Trigger ADR si movements

Example :

ADR-005: Migrate Python 3.8 → 3.11
Trigger: tech-radar.json Python 3.8 moved ADOPT → HOLD

Veille Sources

Daily :

  • GitHub Trending
  • HackerNews front page

Weekly :

  • Stack Overflow Trends
  • NPM/PyPI top downloads

Monthly :

  • ThoughtWorks Tech Radar
  • InfoQ trends

Quarterly :

  • Stack Overflow Developer Survey
  • State of JS/Python surveys

Output

File: .plan/tech-radar.json Update: Quarterly (+ ad-hoc si critical) Owner: tech-lead agent