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LaunchDarkly

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BEST PRACTICES


BEST PRACTICES FOR CODING WITH FEATURE FLAGS

By Yoz Grahame   •   October 28, 2020
1 min read

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Code is a fragile, temperamental material. Engineers don’t just need a program
to function correctly; it should also be easy to read and easy to change. These
requirements often conflict with each other, and those conflicts cause much of
the difficulty inherent in software engineering.

LaunchDarkly’s core message is that feature flags significantly reduce the risk
and pain of working with code. But that reduction doesn’t happen automatically.
If used incorrectly, flags may add complexity and fragility to your codebase.

To help developers use flags more effectively, we’ve written a short best
practice guide: Improving flag usage in code. It features tips for:

 * designing component interfaces for flag-evaluating code
 * easier flag removal with fewer merge conflicts
 * defending against consistency problems

The Guides section of our Documentation site is a growing collection of best
practices from our Developer Advocates. It includes recommendations for creating
flags, deployment and release strategies, and reducing technical debt. There are
also tutorials that will walk you through different uses of LaunchDarkly, such
as targeting and experimentation.

We’re constantly updating and expanding our Guides. If you’re looking for the
best way to use LaunchDarkly in your app, check them out.



By Yoz Grahame

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APRIL 21, 2022   •   BEST PRACTICESWrapping LaunchDarkly

APRIL 21, 2022   •   GALAXYRoll Up for the Galaxy Tour

APRIL 19, 2022   •   PRODUCT UPDATESBig Segments: Simple Targeting at Scale



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