What should be considered when creating a multilingual site?

Question

Internationalization and localization

The language is determined through the http header (as Google advises) + the ability to manually switch, this is all clear. Maybe there are some other important things?

Answer 1

Important points are a wagon and a small cart, many are described in articles on Habré.
Localization is actually a very complex process with a lot of nuances. It is not enough just to have files with texts for translation and additional fields in the database. Names, dates, currencies, just numbers, punctuation marks, text direction - it all depends on the locale.

Answer 2

www.cossa.ru/152/119578
www.cossa.ru/152/121619