I was using some functions inside
C:\ColdFusion2018\cfusion\tmpCache\CFFileServlet
on my Coldfusion, however after moved the setup into auto scaling group, when there is >1 instance/server running, my application failed to load properly the modules inside the folder such as captcha, cfchart.
The error returned is 404, seems like the request unable to track back which server it used to generate the captcha or cfchart image.
Is there any setting to fix this? Such as changing this tmpCache folder into a File Share maybe?