👀 Views: 13 💬 Answers: 1 📅 Created: 2025-06-13

flask redis flask-caching Python

I'm sure I'm missing something obvious here, but I'm trying to implement session management in a Flask application using Flask-Caching with Redis as the backend, but I'm running into issues where the session data isn't being retained across requests... I have the following configuration: ```python from flask import Flask, session from flask_caching import Cache app = Flask(__name__) app.secret_key = 'supersecretkey' cache = Cache(app, config={ 'CACHE_TYPE': 'redis', 'CACHE_REDIS_HOST': 'localhost', 'CACHE_REDIS_PORT': 6379, 'CACHE_REDIS_DB': 0, }) @app.route('/set_session') def set_session(): session['user'] = 'John Doe' return 'Session set!' @app.route('/get_session') def get_session(): return f"User: {session.get('user', 'Not set')}" ``` I've verified that the Redis server is running and accessible, but when I access the `/set_session` route and then immediately go to `/get_session`, it returns 'User: Not set'. I checked the Redis database, and it seems that session data is not being stored there. I tried updating the Flask and Flask-Caching packages to the latest versions (Flask 1.1.2 and Flask-Caching 1.10.1) to see if there were any bug fixes, but the scenario continues. Additionally, I've set the `SESSION_TYPE` to `'redis'` in the Flask app configuration, but it's not working as expected. Here’s the relevant part of my configuration that includes that: ```python app.config['SESSION_TYPE'] = 'redis' app.config['SESSION_PERMANENT'] = False app.config['SESSION_USE_SIGNER'] = True app.config['SESSION_KEY_PREFIX'] = 'myapp:' ``` Is there something I'm missing in the configuration or usage of Flask-Caching with Redis for session management? Any guidance on how to correctly store session data in Redis would be greatly appreciated! Has anyone else encountered this?