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Most likely it's about the Nginx configuration settings.
Original
Google pointed out my mistakes to me:
Use browser cache
If you specify the date or expiration date of static resources in the HTTP headers, the browser will download the resources already received from the local disk and not from the Internet.
Well, below the list. I will give it a part:
https://mc.yandex.ru/metrika/watch.js (60 минут) https://www.google-analytics.com/analytics.js (2 часа) http://site.com/…15877ddfa223e8a8a7533474f07.woff?v=4.7.0 (4 часа) http://site.com/…98cf4de8c1914ef7e8afc9a9abefe3693e57.jpg (4 часа) http://site.com/…62479c3d86a76ab7143d4dc639a6f5f67daa.jpg (4 часа) # Далее также перечислены .js и .css файлы с такой же структурой, # как и .jpg файлы выше в списке. But I generally thought that having a hash in the file name is just for the browser cache. Older versions of Rails used this view, yes:
/stylesheets/global.css?1309495796 But in new versions hash is used:
global-908e25f4bf641868d8683022a5b62f54.css Well, it is written in the official documentation .
So what is it? What is my cant?

nginxtag and the config in question are already needed. And the setting is called, it seems,expires. - D-side