Hi all,
I'm working on architecture with the following components:
1- Moodle website is hosted on an EC2 instance with an Nginx webserver.
2- moodledata directory -which has more than 256 GiB- is mounted on Amazon EFS.
3- Amazon ElastiCache (Memcached) for application cache, and ElastiCache (Redis) for session cache.
4- RDS MySQL for the database.
The website is working well without an SSL certificate, but when we issued an SSL certificate the performance was horrible.
It took more than a minute to load the home page.
We used a Let's Encrypt certificate.
We tried a certificate from ACM on an application load balancer in front of the EC2 instance hosting the website and got the same bad performance.
Does the Amazon EFS impact the SSL performance? The performance was good with EFS before the SSL!!!
We have a production environment with an SSL certificate but without EFS and ElastiCache. moodledata (256 GiB) directory is on EBS (the storage of EC2 servers) and the cache is the default directory of moodle. We have good performance for this environment even with the SSL certificate!!