Feature flagging and rollout enable gradual exposure of changes, segment rollouts, and quick rollback to safely deploy new features and changes.

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Overview

Feature flags allow you to control feature visibility, enabling gradual rollouts, segment-specific deployments, and instant rollbacks without code changes.

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Gradual Rollout

Roll out features gradually: 
{
  "rollout_strategy": "gradual",
  "stages": [
    {
      "percentage": 1,
      "duration_hours": 24
    },
    {
      "percentage": 5,
      "duration_hours": 48
    },
    {
      "percentage": 25,
      "duration_hours": 72
    },
    {
      "percentage": 100,
      "duration_hours": null
    }
  ]
}

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Segment Rollouts

Roll out to specific segments: 
{
  "rollout_strategy": "segment",
  "segments": [
    {
      "segment": "internal_users",
      "percentage": 100
    },
    {
      "segment": "beta_users",
      "percentage": 50
    },
    {
      "segment": "general_users",
      "percentage": 0
    }
  ]
}

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Quick Rollback

Enable instant rollback: 
{
  "rollback": {
    "enabled": true,
    "trigger_conditions": [
      {
        "metric": "error_rate",
        "threshold": 0.05,
        "action": "auto_rollback"
      }
    ]
  }
}

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Best Practices

  1. Start small: Begin with small percentages
  2. Monitor closely: Watch metrics during rollout
  3. Have rollback plan: Be ready to roll back quickly
  4. Test in segments: Use internal/beta segments first
  5. Document flags: Keep track of active feature flags