# Nest JS with 12 Factor App Guys Recently I have created a playlist on youTube explaining things about Nest JS Microservices and how to add 12 factor principles in this microservice Let's Talk about this a bit More ### 12 Factor App [**The Twelve-Factor App** *In the modern era, the software is commonly delivered as a service: called web apps, or software-as-a-service.*12factor.net](https://12factor.net/ "https://12factor.net/")[](https://12factor.net/) The **Twelve-Factor App methodology** is a methodology for building [software-as-a-service](https://en.wikipedia.org/wiki/Software_as_a_service "Software as a service") applications. These best practices are designed to enable applications to be built with portability and resilience when deployed to [the web](https://en.wikipedia.org/wiki/The_web "The web") [https://en.wikipedia.org/wiki/Twelve-Factor\_App\_methodology](https://en.wikipedia.org/wiki/Twelve-Factor_App_methodology) ![](https://cdn.hashnode.com/res/hashnode/image/upload/v1720179563364/91739b73-6e28-454e-a21f-357fa6557ea4.png) I have created this playlist to cover all these aspects by showing how all these can be applied to a simple nestjs service. We started with basic nestjs app and setting up all different aspect of a clean microservice * like linting * test setup using jest for e2e and unit tests * CI/CD setup for app deployment * build and Migration script * Modular structure for application modules * health checks and application monitoring with security modules [**GitHub - tkssharma/12-factor-app-microservices: 12 factor principles using nestjs** *NestJS framework starter repository. This app demonstrates the twelve-factor methodology in Node.js on cloud.gov. The…*github.com](https://github.com/tkssharma/12-factor-app-microservices "https://github.com/tkssharma/12-factor-app-microservices")[](https://github.com/tkssharma/12-factor-app-microservices) Baseline template  [https://github.com/tkssharma/12-factor-app-microservices/tree/master/nestjs-typeorm-postgres-baseline%20%2301](https://github.com/tkssharma/12-factor-app-microservices/tree/master/nestjs-typeorm-postgres-baseline%20%2301) The twelve-factor methodology is not specific to Node.js and much of these tips are already general enough for any cloud.gov application. * Pin Down NPM Package Versions with Yarn.lock * Use Git Flow as a Reliable Version Control Model * Manage Configuration Values with Environment Variables * Build, Release and Run Containers with Docker Compose * Run Stateless Docker Containers * Export Services with Docker Port Binding * Scale Docker Horizontally with Nginx Load Balancing * Ensure Containers Run with High-Availability * Run Consistent Dev, Stage & Prod Docker Environments * Pipe Log Output to STDOUT with Docker Please let me know if this helped in building microservices using all these 12 factors.