Feat: process_start_urls in parallel #159
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process_start_urls 目前会阻塞下方 workers,这样要求使用者一开始就有所有 url
有的时候 url 可能是从某个接口或者消息队列持续地获取到的,一开始并没有。
因此我的改法是将其并行化,作者有空烦请看看这样是否有问题。