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.

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 2.6.2

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 2.6.2
File	Size	Uploaded
Flask-Limiter-2.6.2.tar.gz	283.5 kB	Aug 24, 2022	Details

Built distribution (wheel)

Table of built distributions (wheels) for Flask-Limiter 2.6.2
File	Interpreter	ABI	Platform	Reset
Flask_Limiter-2.6.2-py3-none-any.whl 25.4 kB Aug 24, 2022	Python 3	none	any	Details

Total release size: 308.8 kB

Release files / Flask-Limiter-2.6.2.tar.gz

Download URL	Flask-Limiter-2.6.2.tar.gz
Size	283.5 kB
Tags	Source
SHA-256 checksum How to use checksums	`58b361347f68942ea2d0a9004427098b41da705081494fe3b9be7b67c4ae32c4`
BLAKE2b-256 checksum How to use checksums	`a81617de7bc1cd6ddf6a478b8eac7834030cd928e422d3365d6a79fbd7b1e6f8`
Upload date	Aug 24, 2022
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/4.0.1 CPython/3.9.13`

Release files / Flask_Limiter-2.6.2-py3-none-any.whl

Download URL	Flask_Limiter-2.6.2-py3-none-any.whl
Size	25.4 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`c8451532f88818e839bbdd650cfd424ec11e89fa87e0034f525401399a160e1e`
BLAKE2b-256 checksum How to use checksums	`e3a806bac2c8199c4bc4d5bc5922cbabf1b3f4590049c2377ca924477842f2ec`
Upload date	Aug 24, 2022
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/4.0.1 CPython/3.9.13`