Canary Release

Canary release is a technique to reduce the risk of introducing a new software version in production by slowly rolling out the change to a small subset of users before rolling it out to the entire infrastructure and making it available to everybody.

This is the easiest rollout strategy available. You just have to select a percentage of your users in your flag, and the True behavior will apply to them.

Example

YAML

canary-flag:
  variations:
    oldBehavior: false
    canary: true
  defaultRule:
    percentage:
      oldBehavior: 99
      canary: 1

JSON

 {
  "canary-flag": {
    "variations": {
      "oldBehavior": false,
      "canary": true
    },
    "defaultRule": {
      "percentage": {
        "oldBehavior": 99,
        "canary": 1
      }
    }
  }
}

TOML

[canary-flag.variations]
oldBehavior = false
canary = true

[canary-flag.defaultRule.percentage]
oldBehavior = 99
canary = 1