In this eBook, we explain how to implement feature-flagged software successfully. We also offer some tips to developers on how to configure and manage a growing set of feature flags within your product, maintain them over time, manage infrastructure system migration, and more. Download this free eBook today!
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What you'll learn
Decouple Deployment from Release
Feature flags separate code deployments from feature availability. This enables continuous delivery, targeted rollouts, and safe experimentation in production environments.
Maintain Consistent User Experiences
Ensure users receive the same feature variation as rollouts expand or when transitioning from anonymous visitors to logged-in accounts. Tracking visitor identifiers helps preserve this continuity.
Evaluate Flags on the Server
Processing feature toggles on the server side improves application performance and prevents configuration lag. It also secures sensitive rollout logic from being exposed to the client.
Use Incremental Database Migrations
Avoid lockstep database updates when using feature flags. Instead, utilize expand-contract patterns with duplicate writes to ensure backward compatibility during transitions.
Place Toggles Near Business Logic
Implement flagging decisions as close to the relevant backend services as possible. This centralizes the logic and prevents unnecessary complexity across the application architecture.