Библиотека задач по Java | тесты, код, задания

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Документация PostgreSQL — лучший источник знаний о СУБД. Но она отличается огромным объемом: не каждый разработчик осилит 3024 страницы формата А4.

Опытный бэкендер составил список самых важных сведений, которые ему самому хотелось бы знать перед началом работы с PostgreSQL. Эта подборка сэкономит вам несколько недель изучения документации, и скорее всего, пригодится для работы с другими СУБД.

👉 Список самого важного

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Библиотека задач по Java | тесты код задания Telegram | DID YOU KNOW?

In many cases, the content resembled that of the marketplaces found on the dark web, a group of hidden websites that are popular among hackers and accessed using specific anonymising software.“We have recently been witnessing a 100 per cent-plus rise in Telegram usage by cybercriminals,” said Tal Samra, cyber threat analyst at Cyberint.The rise in nefarious activity comes as users flocked to the encrypted chat app earlier this year after changes to the privacy policy of Facebook-owned rival WhatsApp prompted many to seek out alternatives.

What is Telegram?

Telegram’s stand out feature is its encryption scheme that keeps messages and media secure in transit. The scheme is known as MTProto and is based on 256-bit AES encryption, RSA encryption, and Diffie-Hellman key exchange. The result of this complicated and technical-sounding jargon? A messaging service that claims to keep your data safe.Why do we say claims? When dealing with security, you always want to leave room for scrutiny, and a few cryptography experts have criticized the system. Overall, any level of encryption is better than none, but a level of discretion should always be observed with any online connected system, even Telegram.