Implementing Feature Toggles in Symfony
Feature toggles, also known as feature flags, are a powerful technique that allows developers to enable or disable features in a running application without deploying new code. This mechanism provides much flexibility in managing your features, allowing you to perform canary releases, A/B testing, and gradual rollouts. In this post, we’ll take a look at how to implement feature toggles in a Symfony application.
There are a couple of ways to implement feature toggles in Symfony, but we will use the FlagceptionBundle
robust feature flag bundle for Symfony that allows you to define and manage feature flags.
Installation
First, install the bundle via Composer:
composer require bestit/flagception-bundle
Configuration
After installation, you'll need to configure your feature flags. You can do this in the config/packages/flagception.yaml
file:
flagception:
features:
'feature_one': true
'feature_two': false