What are the features of Flask-Limiter?

What are the features of Flask-Limiter?

Flask-Limiter is a Flask extension that provides rate limiting for your web applications. Key features include: 1. Rate limiting based on various criteria (IP address, user ID, etc.). 2. Support for different storage backends (Redis, Memcached, etc.). 3. Customizable error messages for rate limit exceeded responses. 4. Integration with Flask's request and response cycle.

How can I implement it in my Flask app?

To implement Flask-Limiter, first install it using pip: pip install Flask-Limiter. Then, initialize it in your Flask app like this:

from flask import Flask
from flask_limiter import Limiter

app = Flask(__name__)
limiter = Limiter(app, key_func=get_remote_address)

@app.route('/some_endpoint')
@limiter.limit('5 per minute')
def some_endpoint():
    return 'This is a rate-limited endpoint!'

Can I customize the rate limit rules?

Yes, you can customize rate limit rules by specifying different limits for different routes or users. You can also use decorators to apply limits conditionally based on user roles or other criteria.

What happens when a user exceeds the rate limit?

When a user exceeds the rate limit, Flask-Limiter will return a 429 Too Many Requests response by default. You can customize this response by defining your own error handler.