Strangler Fig Orchestrator Skill

Orchestrates the strangler fig pattern implementation for gradual migration from legacy to modern systems with traffic routing and cutover management.

Purpose

Enable incremental migration for:

• Traffic routing configuration
• Feature flag management
• Gradual cutover orchestration
• Rollback coordination
• Legacy component sunset

Capabilities

1. Traffic Routing Configuration

• Configure API gateway rules
• Set up routing weights
• Handle header-based routing
• Manage path-based routing

2. Feature Flag Management

• Create feature flags
• Control rollout percentage
• Manage user segments
• Handle A/B testing

3. Gradual Cutover Orchestration

• Plan cutover phases
• Execute incremental shifts
• Monitor health metrics
• Coordinate teams

4. Rollback Coordination

• Define rollback triggers
• Automate rollback
• Preserve state
• Document recovery

5. Progress Tracking

• Track migration progress
• Monitor adoption rates
• Report on status
• Visualize timeline

6. Legacy Component Sunset

• Plan decommissioning
• Verify no traffic
• Archive data
• Clean up resources

Tool Integrations

| Tool | Purpose | Integration Method | |------|---------|-------------------| | API Gateways | Traffic routing | Config/API | | LaunchDarkly | Feature flags | API | | Split.io | Feature management | API | | Consul | Service mesh | API | | Istio | Traffic management | Config |

Output Schema

json
{
  "orchestrationId": "string",
  "timestamp": "ISO8601",
  "migration": {
    "legacy": {
      "system": "string",
      "endpoints": []
    },
    "modern": {
      "system": "string",
      "endpoints": []
    }
  },
  "routing": {
    "strategy": "string",
    "rules": [],
    "currentWeights": {}
  },
  "progress": {
    "phase": "string",
    "percentMigrated": "number",
    "remainingEndpoints": []
  },
  "rollback": {
    "available": "boolean",
    "lastCheckpoint": "string"
  }
}

Integration with Migration Processes

• monolith-to-microservices: Gradual extraction
• legacy-decommissioning: Sunset planning

Related Skills

• api-compatibility-analyzer: Contract verification

Related Agents

• strangler-implementation-agent: Implementation
• microservices-decomposer: Service extraction