reading-notes

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Django REST Framework & Docker

Docker overview

Docker is an open platform for developing, shipping, and running applications. Docker enables you to separate your applications from your infrastructure so you can deliver software quickly.

The Docker platform

Docker provides the ability to package and run an application in a loosely isolated environment called a container. The isolation and security allow you to run many containers simultaneously on a given host.

Docker architecture

Docker objects

• Images

An image is a read-only template with instructions for creating a Docker container. Often, an image is based on another image, with some additional customization.

• Containers

A container is a runnable instance of an image.

Install Docker

1. install from https://www.docker.com/get-started
2. run command sudo pip install docker-compose

Image Builds

run command docker image build

Conclusion

-Docker is a way to run Linux containers

• Containers are a lightweight alternative to Virtual Machines

• Dockerfile is a list of instructions for creating an image

• Images are made up of one or more layers

• Containers are a running instance of an image

• docker-compose.yml controls how to run the container

• Containers are stateless and ephemeral in nature. We can link - the local filesystem via volumes but things become more complex with databases (which we didn’t cover here).

Library Website and API

Django REST framework

Django REST framework is a powerful and flexible toolkit for building Web APIs.

Some reasons you might want to use REST framework:

• The Web browsable API is a huge usability win for your developers.
• Authentication policies including packages for OAuth1a and OAuth2.
• Serialization that supports both ORM and non-ORM data sources.
• Customizable all the way down - just use regular function-based views if you don’t need the more powerful features.
• Extensive documentation, and great community support.
• Used and trusted by internationally recognised companies - including Mozilla, Red Hat, Heroku, and Eventbrite.

how Django REST Framework works

• Django REST Framework works alongside the Django web framework to create web APIs. We cannot build a web API with only Django - Rest Framework; it always must be added to a project after Django itself has been installed and configured.

• The most important takeaway is that Django creates websites containing webpages, while Django REST Framework creates web APIs which are a collection of URL endpoints containing available HTTP verbs that return JSON.

• To illustrate these concepts, we will build out a basic Library website with traditional Django and then extend it into a web API with Django REST Framework.