К-of-N или all-must-agree? Два подхода к quorum-логике в multi-region мониторинге. Я остановился на all-must-agree с consecutive-failure threshold. С Redis-схемой, кодом и разбором edge-кейсов где каждый подход ломается. Читать далее
OpenZeppelin Contracts is a library for secure smart contract development. This issue concerns instances of Governor that use the module `GovernorVotesQuorumFraction`, a mechanism that determines quorum requirements as a percentage of the voting token's total supply. In affected instances, when a proposal is passed to lower the quorum requirements, past proposals may become executable if they had been defeated only due to lack of quorum, and the number of votes it received meets the new quorum requirement.
Quorum — блокчейн на базе Ethereum, разработанный JPMorgan и совсем недавно ставший первой платформой распределенного реестра, которую предлагает Microsoft Azure. Quorum поддерживает приватные и публичные транзакции и имеет много коммерческих сценариев использования. В данной статье мы разберем
Authorization Bypass Through User-Controlled Key vulnerability in Apache ZooKeeper. If SASL Quorum Peer authentication is enabled in ZooKeeper (quorum.auth.enableSasl=true), the authorization is done by verifying that the instance part in SASL authentication ID is listed in zoo.cfg server list. The instance part in SASL auth ID is optional and if it's missing, like 'eve@EXAMPLE.COM', the authorization check will be skipped. As a result an arbitrary endpoint could join the cluster and begin…