Cache in AWS instance

Hello,

I've created an EC2 instance and used Bitnami image.

My setup looks like this:

• 1 EC2 instance T
• 1 VPC
• 1 route table (public hosting zone)
• 1 network ACL
• 1 elastic IP
• 4 security groups all connected to that 1 VPC (3/4 groups are bitnami, 1 is default)
• 1 internet gateway
• 1 DHCP option set

I am experiencing issues which could be connected with caching. I thought that by rebooting and even stopping and re-starting the instance would clear the cache, but that doesn't seem to be the case.

My question is: how can I check if there are any cache systems like CDN and how exactly I can clear the cache from the server/instance/VPC.

Admittedly, I am not an infra expert. For this reason, I'd appreciate very much precise (if possible step-by-step) instructions on how to clear the cache.

Thank you!