The first factor of the Twelve-Factor App methodology emphasizes the importance of having one codebase tracked in revision control, with many deploys.
Why One Codebase?
Having a single codebase means that there is one repository that holds the shared code for an application. This code can be deployed across different environments like development, staging, and production.
- Consistency: Ensures uniformity across different stages of deployment.
- Collaboration: Makes collaboration among team members easier.
- Traceability: Simplifies tracking changes and auditing.
How to Manage One Codebase
Use Version Control Systems (VCS)
Tools like Git provide a robust platform for managing a single codebase.
git init git add . git commit -m "Initial commit"
Branching strategies like Git Flow or GitHub Flow can be used to manage different development stages.
git checkout -b feature/new-feature
With one codebase, it's possible to deploy the same code to various environments with different configurations.
- Development Environment: Deploy with a set of development configurations.
- Staging Environment: Test with configurations that mirror the production environment.
- Production Environment: Deploy with production-ready configurations.
The concept of one codebase aligns perfectly with the DevOps culture, promoting collaboration, consistency, and efficiency.