Django REST framework is a powerful tool for creating web APIs. It provides a lot of features out of the box, including throttling. Throttling is a way to limit the number of requests a user can make in a given period of time. This is useful for preventing abuse of the API and ensuring that the server is not overloaded.
In this tutorial, we will learn how to use custom throttling in Django REST framework. We will cover the following steps:
The first step is to install Django REST framework. This can be done using the pip command:
pip install djangorestframeworkOnce the installation is complete, you can verify that it is installed correctly by running the following command:
python -m django --versionThis should output the version of Django REST framework that is installed.
The next step is to create a custom throttling class. This class will be used to define the throttling rules for the API. The class should extend the BaseThrottle class from the Django REST framework. The class should also implement the allow_request method, which will be used to determine if a request should be allowed or not.
The following is an example of a custom throttling class:
from rest_framework.throttling import BaseThrottle
class CustomThrottle(BaseThrottle):
def allow_request(self, request, view):
# Check if the request should be allowed
# Return True if allowed, False if not
return True
The allow_request method should return True if the request should be allowed, and False if it should not. In this example, the method always returns True, which means that all requests will be allowed.
Once the custom throttling class has been created, it needs to be added to the settings. This can be done by adding the following line to the settings.py file:
REST_FRAMEWORK = {
'DEFAULT_THROTTLE_CLASSES': (
'path.to.CustomThrottle',
)
}This will tell Django REST framework to use the custom throttling class when handling requests.
Once the custom throttling class has been added to the settings, it can be used in the views. This can be done by adding the throttle_classes attribute to the view class. The following is an example of a view that uses the custom throttling class:
from rest_framework.views import APIView
from path.to.CustomThrottle import CustomThrottle
class MyView(APIView):
throttle_classes = (CustomThrottle,)
def get(self, request):
# Handle the request
...
This will tell Django REST framework to use the custom throttling class when handling requests for this view.
Once the custom throttling class has been added to the settings and used in the views, it can be tested. This can be done by making requests to the API and checking the response. If the custom throttling is working correctly, the response should be limited according to the rules defined in the custom throttling class.
In this tutorial, we have learned how to use custom throttling in Django REST framework. We have covered the steps of installing Django REST framework, creating a custom throttling class, adding the custom throttling class to the settings, using the custom throttling class in the views, and testing the custom throttling. With these steps, you should be able to use custom throttling in your Django REST framework applications.