Throttling in Django Rest FrameWork

Throttling in Django Rest Framework (DRF) is a way to limit the rate of incoming requests to your API. This can be useful in preventing abuse of your API, protecting against Denial-of-Service (DoS) attacks, and ensuring that your API can handle high levels of traffic.

DRF provides several built-in classes that you can use to throttle requests in different ways. Here are some of the most commonly used ones:

AnonRateThrott Throttling

This class limits the number of requests that anonymous users can make in a given time period. You can configure the time period and request limit by setting the THROTTLE_RATES setting in your Django settings file.

UserRateThrottle

This throttling class limits the number of requests that authenticated users can make in a given time period. You can configure the time period and request limit by setting the THROTTLE_RATES setting in your Django settings file.

ScopedRateThrottle

This class allows you to set different throttling rates for different scopes (or endpoints) in your API. For example, you might want to limit the number of requests to a particular endpoint more than others. You can configure the throttling rates for each scope by setting the THROTTLE_RATES setting in your Django settings file.

To use any of these throttling classes, you simply need to add them to the DEFAULT_THROTTLE_CLASSES setting in your Django settings file, like this:

pythonCopy codeREST_FRAMEWORK = {
    'DEFAULT_THROTTLE_CLASSES': [
        'rest_framework.throttling.AnonRateThrottle',
        'rest_framework.throttling.UserRateThrottle',
        'rest_framework.throttling.ScopedRateThrottle',
    ],
    'DEFAULT_THROTTLE_RATES': {
        'anon': '100/day',
        'user': '1000/day',
        'custom_scope': '50/hour',
    },
}

In this example, we’ve added all three throttling classes to the DEFAULT_THROTTLE_CLASSES setting and set the throttling rates for each class using the DEFAULT_THROTTLE_RATES setting.

Note that you can also create your own custom throttlingg classes if none of the built-in classes meet your needs. To do this, you simply need to create a new class that inherits from rest_framework.throttling.BaseThrottle and implement the allow_request and wait methods.