On Amazon Lightsail, I created a new LAMP (PHP 8) instance.
I followed the official instructions on the Bitnami website to Disable The Server Cache.
https://docs.bitnami.com/aws/infrastructure/lamp/administration/disable-cache/
The lines related to PageSpeed were not available to comment out.
I followed the official instructions of the Bitnami website to Start Or Stop Services.
https://docs.bitnami.com/aws/faq/administration/control-services/
I used the control script to restart the Apache service.
On my Amazon Lightsail instance, I created created /home/bitnami/htdocs/index.php
In that file, I created a test line <?PHP echo "ONE" ?>
and saved the file.
When I load the file from the browser, it shows the expected output.
However, when I change the text in the file, it takes time to update.
This suggests that the server is still caching and not serving instantly.
How do I correctly disable the server cache so I can build out my site?
Thank you. Yes, I do use Control - Shift - R when I refresh the page. As described in the instructions in the first link, the OPCache has been disabled.