App Engine splitting traffic across versions

[Googler]

Hi Goolgers!, 

What is the purpose of having the ability to split traffic between 2 version?

I am learning the GCP bit by bit, and can't think of a use case out of this

Thanks in Advance

[Googler]

Looking to know as well, what is the common practice 

[lawrencenelson]

Hello @Googler,

You can use traffic splitting to specify a percentage distribution of traffic across two or more of the versions within a service. Splitting traffic allows you to conduct A/B testing between your versions and provides control over the pace when rolling out features[1].

Essentially, if you deploy a newer version that might have potential issues, fewer users will be affected.

Be aware of possible issues that might arise when traffic splitting, you can review this documentation for more information - Avoiding caching issues.

[1]. https://cloud.google.com/appengine/docs/legacy/standard/python/splitting-traffic#splitting_traffic_a...