StudioGhibliMovieList:

An application to demonstrate caching and locust tests

What is the purpose?

The purpose is to demonstrate and introduce caching with redis on the view and updating the database every 30secs with the correct data so that every user can access the data that's no older than 1 min.

Statistics:

• Since NGINX/Postgres is not optimised, the system can currently take on only a default value of 300 people
• Redis is programmed to invalidate it's cache every 45 secs.
• Celery scheduled task runs every 30 secs

How to run the application:

1. Use docker, and install docker first :)
2. docker-compose up will start redis, django and nginx
3. You can access the movies list using http://127.0.0.1:8000/movies/
4. A basic HTML UI will be waiting for you, Django templating is used.

How to run Locust tests:

My favorite bit 🎉

1. pip install locust
2. cd locust/
3. Start locust by locust
4. nginx/web/redis should be up and running
5. Log in to http://127.0.0.1:8089/ and set the number of users to 300 and the relative fields.
6. Let locust do it's thing

You can view the finite resources and the results in locust_report.html

Improvements:

• Should optimise the nginx conf
• Should tweak postgres as well (I tried pgbouncer, did not work for some reason...)
• But considering that my computer is finite, I guess this is a nice solution, but ofc not the final optimised version
• The Celery + Postgres bit might be a bit over engineering but still went with it