You want to test a new App Engine version with 1% of traffic before switching fully. What should you do?
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Correct answer: Deploy a new version of your application in App Engine. Then go to App Engine settings in GCP Console and split traffic between the current version and newly deployed versions accordingly..
Why this is the answer
The correct approach is to deploy the new version directly within App Engine. App Engine has built-in traffic splitting capabilities that allow you to direct a percentage of incoming requests to different versions of your application. This is done through the App Engine settings in the GCP Console, where you can specify the traffic allocation for each deployed version. Deploying to Google Kubernetes Engine or Compute Engine instances would involve a complete re-architecture and migration, which is not the intended solution for testing a new App Engine version with traffic splitting. Deploying as a separate App Engine app (rather than a new version within the same app) would also be incorrect, as traffic splitting is managed between versions of the same app, not between different apps.
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