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A rate limiting middleware for Django

Project description

django-rated

A rate limiting middleware for Django

Introduction

rated allows you to limit the requests per hour a single client may attempt on views in ‘realms’ of your site.

You control which views are in which ‘realm’ by either decorating the view, or adding the url pattern into the realm map.

rated will keep track of how many requests, and when, a client has made and, if they’ve exceeded their limit, will return a 503 - Service Unavailable response.

Installing

In your settings.py add to your MIDDLEWARE_CLASSES:

‘rated.middleware.RatedMiddleware’,

Then, add a RATED_REALMS dict.

There are three ways to apply rate limits. Either decorate the view directly, add a realm with the same url pattern name, or map the url pattern name to a realm.

You can add mark a view as in the default realm simply:

@rated_realm def myview(…)

To add it to a specific realm:

@rated_realm(realm=’other’) def myview(…)

Otherwise, if the url pattern is named, and the name matches a realm name, it will be considered part of that realm. There is also the RATED_REALM_MAP, which will map url pattern names to realm names. The url pattern name is always mapped through here.

Settings

RATED_DEFAULT_REALM:

The default realm to put views into. Default: ‘default’

RATED_DEFAULT_TIMEOUT:

How long an access history persists with no accesses. Default: 1 hour

RATED_DEFAULT_LIMIT:

Limit of how many requests an individual client is permitted per hour. Default: 100

RATED_REALMS:

A dict of config dicts. The keys are realm names. The values are dicts containing overrides for ‘limit’ and ‘timeout’. Default: {}

RATED_REALM_MAP:

A mapping of url pattern names to realms. This allows you to apply limits to views in 3rd party apps. Default: {}

RATED_REDIS:

Redis config settings.

Project details


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