How can I implement async middleware in Flask?

How can I implement async middleware in Flask?

To implement async middleware in Flask, you can use the async and await keywords in your middleware functions.

Can you provide a code example?

Sure! Here's a simple example:

from flask import Flask, request

app = Flask(__name__)

@app.before_request
async def async_middleware():
    # Your async code here
    await some_async_function()

@app.route('/')
async def index():
    return 'Hello, async world!'

What are some use cases for async middleware?

Async middleware is useful for handling I/O-bound tasks, like making API calls or database queries without blocking the main thread.

Are there any limitations I should be aware of?

Yes, Flask's async support is still evolving, so some extensions may not be fully compatible with async functions.