分享一个 scrapy 爬虫用的插件 - V2EX
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UserNameisNull

分享一个 scrapy 爬虫用的插件

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  •   UserNameisNull Aug 29, 2019 1848 views
    This topic created in 2448 days ago, the information mentioned may be changed or developed.
    Supplement 1    Feb 20, 2020
    Scrpay-Kafka-Redis
    在有大量请求堆积的情况下,即使用了 Bloomfilter 算法,使用 scrapy-redis 仍然会占用大量内存,本项目参考 scrapy-redis,

    特点
    支持分布式
    使用 Redis 作为去重队列 同时使用 Bloomfilter 去重算法,降低了内存占用,但是增加了可去重数量
    使用 Kafka 作为请求队列 可支持大量请求堆积,容量和磁盘大小相关,而不是和运行内存相关
    由于 Kafka 的特性,不支持优先队列,只支持先进先出队列
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