Description

A technique that reduces downtime and risk by running two identical production environments called Blue and Green.

Where to use

• Zero downtime deployment.
\n
• Instant rollback.

Real World Example

Router points to Blue (v1). Deploy v2 to Green. Switch router to Green.

Code Example

class Blue–GreenDeployment:
    def __init__(self):
        pass

    def execute(self):
        print('Executing Blue–Green Deployment')