April 2020
Beginner to intermediate
540 pages
14h 14m
Russian
Content preview from MongoDB: полное руководство
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Глава 11
Компоненты набора реплик
В этой главе рассказывается, как фрагменты набора реплик согласуются
друг с другом, в том числе:
• как члены набора реплик реплицируют новые данные;
• как работает подключение новых членов;
• как работают выборы;
• возможные сценарии сбоя сервера и сети.
Синхронизация
Репликация связана с сохранением идентичной копии данных на несколь-
ких серверах. MongoDB осуществляет ее путем ведения журнала опера-
ций, где содержится каждая запись, выполняемая первичным узлом. Это
ограниченная коллекция, которая находится в локальной базе данных на
первичном узле. Вторичные узлы запрашивают эту коллекцию для опера-
ций,
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.