Question 1

How to integrate rollout into a Rails application?

Accepted Answer

Initialize rollout with Redis in an initializer, define groups in application code, and use active? checks in controllers or views. The README recommends using a global variable for simplicity, but you can encapsulate it in a service object for better structure.

Question 2

Rollout vs Flipper: which is better for Ruby feature flags?

Accepted Answer

Rollout is simpler and faster with Redis focus, ideal for teams prioritizing speed and minimal dependencies. Flipper supports multiple backends and has a built-in UI, but may introduce more complexity. Choose based on whether you need Redis-only performance or backend flexibility.

Question 3

How to implement percentage-based rollouts with randomization in rollout?

Accepted Answer

Use activate_percentage with a feature name and percentage; rollout uses CRC32 of user.id for consistency. Enable randomize_percentage in the Rollout.new constructor for independent user selection across features, as described in the README for split testing.

Question 4

Can rollout handle automatic feature deactivation on errors?

Accepted Answer

Yes, but not natively; it integrates with external tools like degrade for failure detection. You can call deactivate globally when thresholds are met, as mentioned in the README, but you need to set up monitoring separately.

Question 5

How to manage rollout feature flags across multiple environments like staging and production?

Accepted Answer

Use Redis namespacing with redis-namespace gem, as shown in the README, to separate keys per environment. This ensures isolated feature states but requires careful Redis configuration to avoid cross-contamination.

Question 6

Is rollout suitable for microservices with services in different languages?

Accepted Answer

Not directly; rollout is Ruby-specific. For multi-language setups, you'd need to use third-party ports or ensure shared Redis with consistent logic, which can be error-prone and lack synchronization features.

Rollout

What is Rollout?

Overview

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Pros & Cons

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Frequently Asked Questions