Hello World App

This is simple web application for testing in Docker, Kubernetes, etc.

Features

• "Think" - Causes the application to use 100% of CPU for a moment to simulate computation
• "Pump up" - Causes the application to slowly eat a lot of memory to simulate memory leak
• "Suicide" - Causes the application to crash to test recovery

Development

Run in Docker

docker build -t polarsquad:hello-world-app
docker run -it --rm -p 3000:3000 polarsquad:hello-world-app

Open http://localhost:3000

Run with Docker Compose

docker-compose up

Open http://localhost:3000

Run locally

Prerequisites

1. Install NodeJS (check version from .nvmrc)
2. Install Yarn (npm install -g yarn)
3. Install dependencies (yarn install)

yarn start

Run with Redis

docker-compose up -d redis

REDIS_URL=redis://localhost yarn start

Open http://localhost:3000