How to make scalable website

The English version of article how to build scalable web applications.

Basically it is: front-end, back-end and database.

For example, our company gives priority to the Apache server that handles each http request in a separate process.

There are several schemes of data distribution:

We divided into 2 servers, one server holds the records only to men and the second only women.

Very often this data is used IP and the user's country.