i'm working on drupal community site and i want to ask about this things :
1 - how to hide the drupal information from my site ?
2 - how to make the drupal site more secure ?
3 - how to make my site work as fast as possible when there is a lot of visitors and users on the site
and there is a lot of interaction with the database at the same time?
4 - how to configure drupal to work with high server load and how to configure my server's hardware to work with high load ?