How can you make such a topic:
When you first enter the site, the site setup data is taken from the database.
These settings are the same for all visitors, so rummaging into the database every time and loading it does not make much sense
You can save to the file, but every time you need to read the file by twisting the hard drive, and if it is still very busy scrolling through other files, then this is not very effective
How can you save data in RAM and take it from there?