Update Options

Some of the update option for Elastic Beanstalk

• All at once (deploy all in one go)
  • fastest but has down time
• Rolling
  • update a few instances at a time
  • the application will be running below capacity
• Rolling with additional batches
  • like rolling but we spin up new instances so that the old application is still available
  • the application will not be running under capacity
  • small additional cost
  • Good for prod
• immutable:
  • Spin new instances in new ASG, deploy these instances and swaps when everything is ready
  • Zero downtime
  • High cost
  • Great for prod
• Blue/green deployment
  • Zero downtime
  • Create new environment (green) can be validated
  • Setup route 53 as weighted policy
• Traffic splitting
  • good for canary testing
  • new application version is deployed to a temporary ASG with the same capacity
  • Small % of traffic send to the temporary ASG for a configurable amount of time
  • If there is a deployment failure, it will trigger automated rolback (very quick)