How utilizes Blue/Green Deployments

  • If the deploy goes badly, we can always flip the floating IP back to the original box while keeping the bad deployment in an unaltered state to investigate.
  • Both our “production” and “staging” environments take turns receiving real production traffic, assuring that our staging environment will never be stale or deviate from production.
  • In our case, we can run migrations and verifications on the box we deployed to without interrupting user traffic.
  • If I suddenly need scale, I can always swap out the floating IP with a load balancer and serve requests to both environments (does require manually asserting that both environments have the same deployment version which is less-than-ideal).
  • For roughly $15/month I can have an active-active setup.
Martin Fowler’s diagram of blue/green deployments




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Software Engineer. 70% of my body is made of code.

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