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Project Description

Flask-Limiter provides rate limiting features to flask routes. It has support for a configurable backend for storage with current implementations for in-memory, redis and memcache.

Quickstart

Add the rate limiter to your flask app. The following example uses the default in memory implementation for storage.

from flask import Flask
from flask_limiter import Limiter
from flask_limiter.util import get_remote_address

app = Flask(__name__)
limiter = Limiter(
    app,
    key_func=get_remote_address,
    default_limits=["2 per minute", "1 per second"],
)

@app.route("/slow")
@limiter.limit("1 per day")
def slow():
    return "24"

@app.route("/fast")
def fast():
    return "42"

@app.route("/ping")
@limiter.exempt
def ping():
    return 'PONG'

app.run()

Test it out. The fast endpoint respects the default rate limit while the slow endpoint uses the decorated one. ping has no rate limit associated with it.

$ curl localhost:5000/fast
42
$ curl localhost:5000/fast
42
$ curl localhost:5000/fast
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<title>429 Too Many Requests</title>
<h1>Too Many Requests</h1>
<p>2 per 1 minute</p>
$ curl localhost:5000/slow
24
$ curl localhost:5000/slow
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<title>429 Too Many Requests</title>
<h1>Too Many Requests</h1>
<p>1 per 1 day</p>
$ curl localhost:5000/ping
PONG
$ curl localhost:5000/ping
PONG
$ curl localhost:5000/ping
PONG
$ curl localhost:5000/ping
PONG

Read the docs

Changelog

0.9.4 2017-05-01

  • Implemented application wide shared limits

0.9.3 2016-03-14

  • Allow reset of limiter storage if available

0.9.2 2016-03-04

  • Deprecation warning for default key_func get_ipaddr
  • Support for Retry-After header

0.9.1 2015-11-21

  • Re-expose enabled property on Limiter instance.

0.9 2015-11-13

  • In-memory fallback option for unresponsive storage
  • Rate limit exemption option per limit

0.8.5 2015-10-05

  • Bug fix for reported issues of missing (limits) dependency upon installation.

0.8.4 2015-10-03

  • Documentation tweaks.

0.8.2 2015-09-17

  • Remove outdated files from egg

0.8.1 2015-08-06

  • Fixed compatibility with latest version of Flask-Restful

0.8 2015-06-07

  • No functional change

0.7.9 2015-04-02

  • Bug fix for case sensitive methods whitelist for limits decorator

0.7.8 2015-03-20

  • Hotfix for dynamic limits with blueprints
  • Undocumented feature to pass storage options to underlying storage backend.

0.7.6 2015-03-02

  • methods keyword argument for limits decorator to specify specific http methods to apply the rate limit to.

0.7.5 2015-02-16

0.7.4 2015-02-03

  • Use Werkzeug TooManyRequests as the exception raised when available.

0.7.3 2015-01-30

  • Bug Fix
    • Fix for version comparison when monkey patching Werkzeug
      (Issue 24)

0.7.1 2015-01-09

  • Refactor core storage & ratelimiting strategy out into the limits package.
  • Remove duplicate hits when stacked rate limits are in use and a rate limit is hit.

0.7 2015-01-09

  • Refactoring of RedisStorage for extensibility (Issue 18)
  • Bug fix: Correct default setting for enabling rate limit headers. (Issue 22)

0.6.6 2014-10-21

  • Bug fix
    • Fix for responses slower than rate limiting window. (Issue 17.)

0.6.5 2014-10-01

  • Bug fix: in memory storage thread safety

0.6.4 2014-08-31

  • Support for manually triggering rate limit check

0.6.3 2014-08-26

  • Header name overrides

0.6.2 2014-07-13

0.6.1 2014-07-11

  • per http method rate limit separation (Recipe)
  • documentation improvements

0.5 2014-06-13

0.4.4 2014-06-13

  • Bug fix
    • Werkzeug < 0.9 Compatibility (Issue 6.)

0.4.3 2014-06-12

  • Hotfix : use HTTPException instead of abort to play well with other extensions.

0.4.2 2014-06-12

  • Allow configuration overrides via extension constructor

0.4.1 2014-06-04

  • Improved implementation of moving-window X-RateLimit-Reset value.

0.4 2014-05-28

0.3.2 2014-05-26

  • Bug fix
    • Memory leak when using Limiter.storage.MemoryStorage (Issue 4.)
  • Improved test coverage

0.3.1 2014-02-20

  • Strict version requirement on six
  • documentation tweaks

0.3.0 2014-02-19

  • improved logging support for multiple handlers
  • allow callables to be passed to Limiter.limit decorator to dynamically load rate limit strings.
  • add a global kill switch in flask config for all rate limits.
  • Bug fixes
    • default key function for rate limit domain wasn’t accounting for X-Forwarded-For header.

0.2.2 2014-02-18

  • add new decorator to exempt routes from limiting.
  • Bug fixes
    • versioneer.py wasn’t included in manifest.
    • configuration string for strategy was out of sync with docs.

0.2.1 2014-02-15

  • python 2.6 support via counter backport
  • source docs.

0.2 2014-02-15

  • Implemented configurable strategies for rate limiting.
  • Bug fixes
    • better locking for in-memory storage
    • multi threading support for memcached storage

0.1.1 2014-02-14

  • Bug fixes
    • fix initializing the extension without an app
    • don’t rate limit static files

0.1.0 2014-02-13

  • first release.
Release History

Release History

0.9.4

This version

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0.9.3

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0.9.2

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0.9.1

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0.9

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0.8.5

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0.8.4

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0.8.3

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0.8.2

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0.8.1

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0.8

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0.7.9

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0.7.8

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0.7.7

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0.7.6

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0.7.5

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0.7.4

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0.7.3

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0.7.2

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0.7.1

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0.7

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0.6.6

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0.6.5

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0.6.4

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0.6.3

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0.6.2

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0.6.1

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0.6

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0.5

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0.4.4

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0.4.3

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0.4.2

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0.4.1

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0.4

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0.3.2

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0.3.1

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0.3.0

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0.2.2

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0.2.1

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0.2

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0.1.1

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0.1.0

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0.0.1

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Flask_Limiter-0.9.4-py2.7.egg (25.8 kB) Copy SHA256 Checksum SHA256 2.7 Egg Apr 30, 2017
Flask-Limiter-0.9.4.tar.gz (83.3 kB) Copy SHA256 Checksum SHA256 Source Apr 30, 2017

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