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twelve-factor

@Xantibody/dotfiles
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12 Factor App methodology for web applications and microservices.

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SKILL.md

name twelve-factor
description 12 Factor App methodology for web applications and microservices.

The Twelve-Factor App

Factors

# Factor Principle
I Codebase One codebase tracked in VCS, many deploys
II Dependencies Explicitly declare and isolate dependencies
III Config Store config in environment variables
IV Backing services Treat backing services as attached resources
V Build, release, run Strictly separate build and run stages
VI Processes Execute app as stateless processes
VII Port binding Export services via port binding
VIII Concurrency Scale out via the process model
IX Disposability Fast startup and graceful shutdown
X Dev/prod parity Keep development and production similar
XI Logs Treat logs as event streams
XII Admin processes Run admin tasks as one-off processes

Checklist

  • No hardcoded config (use env vars)
  • Dependencies in manifest (package.json, go.mod, etc.)
  • Stateless processes (no local session state)
  • Logs to stdout (no local log files)
  • Graceful shutdown handling
  • Health check endpoints