Counters - Different counters, different storages

A simple counter app utilizing different storage types to keep track of the current count.

Content

Following counters are included:

• Frontend
• Backend
• Redis (planned)
• MongoDB (planned)

Scope

This app will be uses to setup differed CI/CD scenarios.

Networking configuration

Running local

Development Mode

• Frontend via npm start (development): localhost:3001
• Backend via npm run dev (development): localhost:3000
• api requests from frontend to backend proxy to localhost:3000

Production Mode (local)

• Frontend build via npm run build (production)
• Frontend served thru backend (express.static)
• Backend via npm run prod: localhost:5000

Running remote via CI/CD pipeline

• set NODE_ENV to 'production' via pipeline variable
• set PORT_PROD to '5000' or whatever via pipeline variable
• use 'pm2 startOrReload' to run app

Agent configuration

• VM made available to pipeline via azure-pipelines-agent (https://github.com/microsoft/azure-pipelines-agent/releases)
• pm2 configured for auto restart after boot (see 'pm2 startup')

CI/CD Setups

Individual pipelines

• build-pipeline.yml -> install, build, lint, test, zip artifacts (drop)
• release-pipeline.yml -> download artifacts, run app

Release pipeline / Azure

• todo

Environment variables

To be set in dotenv-file ./counters-backend/.env

Production environment PORT_PROD=... REDIS_URL_PROD=... MONGO_URL_PROD=...

Development environment PORT_DEV=... REDIS_URL_DEV=... MONGO_URL_DEV=...