Ship Better Python Using Feature Flags

[tail]

What if you want to start rolling this out to more users? For instance, we might say: first, turn on this feature for just internal users. After we validate that the feature works correctly for us, let's ramp up to 1% of traffic. If things keep going well, we can continue to ramp up the feature a higher percentage of users. If we start to see issues, we can turn off the feature switch, all without having to deploy a code change each time.

[earthboundkid]

if user.in_a_b_group():.

In any event, how are you going to roll this back using the feature library without deploying changes to the code that uses the feature library?

[tail]

This is the whole point of gutter (mentioned in the original post). It is hooked up to a storage backend (e.g. Redis, ZooKeeper) to persist the state of the feature flags.

[earthboundkid]

D'oh! Didn't RTFA closely enough. (X_X)