Create a simple tornado application and deploy on Heroku

This repo will teach how to create a basic tornado application from scratch and how to deploy it on Heroku.

Prerequisites

Python  >= 2.7
Tornado >= 3.1.1
Heroku login credentials(free account option available)
Heroku CLI(Command Line Interface)
Docker(Only for app containerization)

Installation

1. Assuming all the prerequisites are installed, run the following command

python main.py 

Check the output on localhost:5000

2. Commands to login into Heroku CLI and to create heroku app

heroku login 
[will ask for the login credentials]

heroku apps: create [filename]

3. To deploy this app on Heroku using git, run following command:

git push heroku master

Check the final output on the Heroku dashboard.

Dockerize the tornado application

Build the Docker image using this command:

docker build -t hello-tornado . 

Run the Docker container using this command:

docker run -d -p 5000:5000 hello-tornado

You can check for the final output on localhost:5000.