楼上(shàng )说(shuō )的很(hěn )多,我补(bǔ )充(chōng )一下,正(zhèng )确的应该叫网络蜘蛛,又称爬虫(chóng ),本(běn )质是(shì )搜(sōu )索(suǒ )引(yǐn )擎(qíng )派出的一个执行(háng )抓取任务的(de )程序蜘蛛池的本(běn )质是(shì )大量(liàng )的网站(zhàn )互相链(liàn )接,每个站(zhàn )单独产生(shēng )大量的内容吸引(yǐn )蜘蛛(zhū )来爬,几千(qiān )个(gè )网站(zhàn )互链时,可以(yǐ )想象蜘(zhī )蛛的链接
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