Flask-Limiter

Flask-Limiter provides rate limiting features to flask applications.

It allows configuring various backends to persist the rate limits, which is provided by the limits library.

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Quickstart

Add the rate limiter to your flask app.

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"],
    storage_uri="memory://",
    # Redis
    # storage_uri="redis://localhost:6379",
    # Redis cluster
    # storage_uri="redis+cluster://localhost:7000,localhost:7001,localhost:70002",
    # Memcached
    # storage_uri="memcached://localhost:11211",
    # Memcached Cluster
    # storage_uri="memcached://localhost:11211,localhost:11212,localhost:11213",
    # MongoDB
    # storage_uri="mongodb://localhost:27017",
    strategy="fixed-window", # or "moving-window"
)

@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

For more details read the docs

Metadata

Release files for Flask-Limiter 2.8.1

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for Flask-Limiter 2.8.1
File	Size	Uploaded
Flask-Limiter-2.8.1.tar.gz	284.2 kB	Nov 15, 2022	Details

Built distribution (wheel)

Table of built distributions (wheels) for Flask-Limiter 2.8.1
File	Interpreter	ABI	Platform	Reset
Flask_Limiter-2.8.1-py3-none-any.whl 25.6 kB Nov 15, 2022	Python 3	none	any	Details

Total release size: 309.7 kB

Release files / Flask-Limiter-2.8.1.tar.gz

Download URL	Flask-Limiter-2.8.1.tar.gz
Size	284.2 kB
Tags	Source
SHA-256 checksum How to use checksums	`d37d0a39ce1fe36f661a765132557d3213040c51d9355379fe2f336bfea7e308`
BLAKE2b-256 checksum How to use checksums	`2b429379f215a604487d18e5cf6d30ca661f7fdcdaef73f56a8f5a89cc1dbdf4`
Upload date	Nov 15, 2022
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/4.0.1 CPython/3.9.15`

Release files / Flask_Limiter-2.8.1-py3-none-any.whl

Download URL	Flask_Limiter-2.8.1-py3-none-any.whl
Size	25.6 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`621f1f26fbde4768c60df510e31569e72ae91eee659633e35fd78d90073a0d56`
BLAKE2b-256 checksum How to use checksums	`43ef3f2a2827c2a699c67a18a0ab7538b855aa5c5ec846d164e832953b027f60`
Upload date	Nov 15, 2022
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/4.0.1 CPython/3.9.15`