django-throttle-requests 0.7.0

A Django framework for application-layer rate limiting

a framework for implementing rate-limiting middleware for Django projects

Overview

This package allows Django developers to define application-level rate-limiting rules. Often, these rules would be expressed as “max # requests within a defined time period”. E.g.:

• an IP address may make at most 1500 requests/day

• users with an OAuth access token may make 500 reads/hour and 200 writes/hour

You can also define leaky bucket-style rules:

• Allow 10 requests per minute, then every 6 seconds thereafter.

Features

• Attach rules to specific views using a decorator

• Supports multiple throttle configurations

• Use Django’s cache layer as the storage backend, or use Redis scripting for production-ready atomic operations

• Define request attributes to rate limit (e.g. remote IP address, username, HTTP header value, device fingerprint, etc.)

• Application-level rate limiting rules using fixed-bucket or generic cell rate algorithm (leaky bucket)

Installation

1. Install the library with pip:

   sudo pip install django-throttle-requests

2. Add the directory throttle to your project’s PYTHONPATH.

Usage

1. Insert the following configuration into your project’s settings:

   THROTTLE_ZONES = {
       'default': {
           'VARY':'throttle.zones.RemoteIP',
           'ALGORITHM': 'fixed-bucket',  # Default if not defined.
           'BUCKET_INTERVAL':15 * 60,  # Number of seconds to enforce limit.
           'BUCKET_CAPACITY':50,  # Maximum number of requests allowed within BUCKET_INTERVAL
       },
   }
   
   # Where to store request counts.
   THROTTLE_BACKEND = 'throttle.backends.cache.CacheBackend'
   
   # Optional if Redis backend is chosen ('throttle.backends.redispy.RedisBackend')
   THROTTLE_REDIS_HOST = 'localhost'
   THROTTLE_REDIS_PORT = 6379
   THROTTLE_REDIS_DB = 0
   THROTTLE_REDIS_AUTH = 'pass'
   
   # Normally, throttling is disabled when DEBUG=True. Use this to force it to enabled.
   THROTTLE_ENABLED = True

2. Use the @throttle decorator to enforce throttling rules on a view:

   from throttle.decorators import throttle
   
   @throttle(zone='default')
   def myview(request):
      ...

3. Also works with class-based views:

   from django.views.generic import View
   from django.utils.decorators import method_decorator
   
   from throttle.decorators import throttle
   
   class TestView(View):
   
       @method_decorator(throttle(zone='default'))
       def dispatch(self, *args, **kwargs):
           return super(TestView, self).dispatch(*args, **kwargs)
   
       def head(self, request):
           ...
   
       def get(self, request):
           ...

Code:

https://github.com/sobotklp/django-throttle-requests

Documentation:

https://readthedocs.org/projects/django-throttle-requests/