12 Factor App (Concept)

Description

is a methodology for building software-as-a-service applications

Documentation

In the modern era, software is commonly delivered as a service: called web apps, or software-as-a-service. The twelve-factor app is a methodology for building software-as-a-service apps that:

• Use declarative formats for setup automation, to minimize time and cost for new developers joining the project;
• Have a clean contract with the underlying operating system, offering maximum portability between execution environments;
• Are suitable for deployment on modern cloud platforms, obviating the need for servers and systems administration;
• Minimize divergence between development and production, enabling continuous deployment for maximum agility;
• And can scale up without significant changes to tooling, architecture, or development practices.

The twelve-factor methodology can be applied to apps written in any programming language, and which use any combination of backing services (database, queue, memory cache, etc).

Other Relations

From	Name	To	Description
Concurrency	factor of	12 Factor App	scale out via the process model
Processes	factor of	12 Factor App	execute the app as one or more stateless processes
Config	factor of	12 Factor App	store config in the environment
Backing Services	factor of	12 Factor App	treat backing services as attached resources
Disposability	factor of	12 Factor App	maximize robustness with fast startup and graceful shutdown
Dev/Prod Parity	factor of	12 Factor App	keep development, staging, and production as similar as possible
Logs	factor of	12 Factor App	treat logs as event streams
Admin Processes	factor of	12 Factor App	run admin/management tasks as one-off processes
Codebase	factor of	12 Factor App	always tracked in a version control system
Dependencies	factor of	12 Factor App	explicitly declare and isolate dependencies
Build, Release, Run	factor of	12 Factor App	strictly separate build and run stages
Port Binding	factor of	12 Factor App	export services via port binding

Concept Map

Concept Map for Twelve Factor Apps

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