12Factors

• Paas 를 제공하는 Heroku 에서 제안한 12가지 항목

• 12-Factor는 애플리케이션이 Cloud 환경에서 올바르게 게 동작하기 위해서 지켜야 하는 12가지 규칙을 말합니다.

I. Codebase

• One codebase tracked in revision control, many deploys

II. Dependencies

• Explicitly declare and isolate dependencies

III. Config

• Store config in the environment

IV. Backing services

• Treat backing services as attached resources

V. Build, release, run

• Strictly separate build and run stages

VI. Processes

• Execute the app as one or more stateless processes

VII. Port binding

• Export services via port binding

VIII. Concurrency

• Scale out via the process model

IX. Disposability

• Maximize robustness with fast startup and graceful shutdown

X. Dev/prod parity

• Keep development, staging, and production as similar as possible

XI. Logs

• Treat logs as event streams

XII. Admin processes

• Run admin/management tasks as one-off processes