#почитать #посмотреть #senior
" ... внезапно после выкатки задачи, в которой менялась конфигурация pgBouncer и приложения, что-то пошло не так — сработали триггеры, загорелась тревога. Из-за новой конфигурации к базе данных увеличилось количество активных соединений, а в самой БД — количество активных блокировок. При этом утилизация CPU со стороны базы выросла в целых пять раз"
или посмотреть видео:
BY SQL для тестировщика
Telegram is an aspiring new messaging app that’s taking the world by storm. The app is free, fast, and claims to be one of the safest messengers around. It allows people to connect easily, without any boundaries.You can use channels on Telegram, which are similar to Facebook pages. If you’re wondering how to find channels on Telegram, you’re in the right place. Keep reading and you’ll find out how. Also, you’ll learn more about channels, creating channels yourself, and the difference between private and public Telegram channels.
To pay the bills, Mr. Durov is issuing investors $1 billion to $1.5 billion of company debt, with the promise of discounted equity if the company eventually goes public, the people briefed on the plans said. He has also announced plans to start selling ads in public Telegram channels as soon as later this year, as well as offering other premium services for businesses and users.
SQL для тестировщика from sg