Add support for Traffic Shadowing
Problem to solve
As a developer I want to test my new functionality with production traffic without actually harming production.
User experience goal
The user should be able to "duplicate" some of the production traffic to another server and analyze the behavior of the new functionality with real traffic. This will allow testing performance degradations or for example existence of 500 errors an so on...
This connects very nicely to post deployment monitoring where the users can monitor the new environment and check that everything is ok before pushing to production.
Traffic shadowing is a deployment pattern where production traffic is asynchronously copied to a non-production service for testing. Shadowing is a close cousin to two other commonly known deployment patterns, canary releases and blue/green deployments.