Continuous Delivery with Docker and Jenkins

Feature toggles

Feature toggle is a technique that is an alternative to maintaining multiple source code branches such that the feature can be tested before it is completed and ready for release. It is used to disable the feature for users but enable it for developers while testing. Feature toggles are essentially variables used in conditional statements.

The simplest implementation of feature toggles are flags and the if statements. A development using feature toggles, as opposed to feature branching development, looks as follows:

1. A new feature has to be implemented.
2. Create a new flag or a configuration property feature_toggle (instead of the feature branch).
3. Every feature-related code is added inside the if statement (instead of committing ...