How to-build-google
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Большой кравлинг
на фронтирахДенис Тимофеев. Скрапингхаб
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Скрапингхаб
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Scrapy
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Инфраструктура
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Архитектура
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Requests + Beautifulsoup
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Scrapy
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Docker
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MesosKubernetos
Swarm
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Где хранить результаты?
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Хочется процессинга
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Фронтир готов!
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Что же внутри?
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СУБД
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SQLAlchemy & RDBMSили
HBase
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Почему HBase
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Реализация BigTable
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MapReduce
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HyperTable Cassandra
Accumulo HBase
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Очереди сообщений
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ZeroMQили
Kafka
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Почему Kafka
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Вежливый обход
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Топики и разделы
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СмещенияОффсеты
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Стратегии обхода
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Состояния URLНе пройденоВ очереде
ПройденоОшибка
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Переобход
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Ограничение числа
страниц
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Тематический обход
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В реальном мире
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DNS
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Ключ в HBase
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Лексографическая сортировка
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И блочное чтение
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ru. rannts/news/2016/8/meetup-12/
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ru. rannts/news/2016/8/meetup-12/
crc32 md5↓↓
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Локальный кэш
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dict
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4K & 1M
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.es
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70K доменов
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46.5М страниц
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1.5 месяца
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8 серверов
24 CPU 160G RAM
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