malefici / tt89up

Test task

There are two applications based on Django and Tornado. I decided to choose tornado for sending notifications into browser via WebSockets. I do not want to use something like Django Channels in aspect of WSGI protocol stateless. This project does not contain tests.

How to start

This demo project does not require any server in front of applications or database configuration. For testing you will need three terminals and virtual environment with installed dependencies. All URLs between Django and Tornado applications are hardcoded.

In first terminal, please, run:

./manage.py migrate
./manage.py runserver

And in second terminal we will start application based on Tornado server:

python websockets_server.py

Now we can start to get data from petitions site by URL 127.0.0.1:8000.

After creating tasks for data aggregation, use third terminal with:

./manage.py execute_tasks

With this command we can imitate jobs queue or processing tasks manually or use with systemd. Also this command can be used with crond but one minute is one minute.

Some words about

Long polling is a alternative for WebSockets. You can test it with stopped Tornado server.

I did not understand task variant with diagrams. I hope that it is what you want.