I am using 2 EC2 from AWS and a load balancer to handle traffic .. both EC2 instances are copies of each other with the same app installed. finally, I have a domain connected to a load balancer that opens the app .. and everything works fine for a while then suddenly it starts to be super slow .. also if I connect to one of the instances using SSH I disconnect and fail to connect again ..also the website gives gateway time out error 504
it stays like that for a few minutes then it starts to work again .. or it works immediately if I reboot both instances !!

MORE INFO

EC2 type: t3.micro

Application info: Django with Apache server, both running inside docker container using docker-compose file ..works on port 80

Monitoring results: Mostly before this error CPU usage had some kind of a spike and it reached about 60% .. never higher than that

Assets / Uploaded media: I am using the S3 bucket for both static data and uploaded media.

Database: Using the RDS database service from AWS

Network: Everything runs inside a VPC

NOTES

This app works locally in perfect shape for hours without having this error.