app_config.py

# Tells the Flask-session extension to store sessions in the filesystem
SESSION_TYPE = "filesystem"
# In production, your setup may use multiple web servers behind a load balancer,
# and the subsequent requests may not be routed to the same web server.
# In that case, you may either use a centralized database-backed session store,
# or configure your load balancer to route subsequent requests to the same web server
# by using sticky sessions also known as affinity cookie.
# [1] https://www.imperva.com/learn/availability/sticky-session-persistence-and-cookies/
# [2] https://azure.github.io/AppService/2016/05/16/Disable-Session-affinity-cookie-(ARR-cookie)-for-Azure-web-apps.html
# [3] https://learn.microsoft.com/en-us/azure/app-service/configure-common?tabs=portal#configure-general-settings