Например: два пользователя одновременно пытаются обновить информацию о товаре в магазине, то изменения одного пользователя не могут "перемешиваться" с действиями другого. Транзакции не видят промежуточные результаты других транзакций, пока они не будут завершены. Это гарантирует, что одна транзакция не повлияет на другую до её завершения.
BY Библиотека собеса по C# | вопросы с собеседований
Telegram is a free app and runs on donations. According to a blog on the telegram: We believe in fast and secure messaging that is also 100% free. Pavel Durov, who shares our vision, supplied Telegram with a generous donation, so we have quite enough money for the time being. If Telegram runs out, we will introduce non-essential paid options to support the infrastructure and finance developer salaries. But making profits will never be an end-goal for Telegram.
Cryptoassets enthusiasts use this application for their trade activities, and they may make donations for this cause.If somehow Telegram do run out of money to sustain themselves they will probably introduce some features that will not hinder the rudimentary principle of Telegram but provide users with enhanced and enriched experience. This could be similar to features where characters can be customized in a game which directly do not affect the in-game strategies but add to the experience.
Библиотека собеса по C | вопросы с собеседований from sg