楼上(shàng )说的(de )很多,我补充一(yī )下(xià ),正(zhèng )确的应该叫(jiào )网络蜘蛛,又(yòu )称爬虫,本质(zhì )是搜索引擎派(pài )出的一(yī )个(gè )执行抓(zhuā )取(qǔ )任(rèn )务的程序(xù )蜘蛛池(chí )的本质(zhì )是大量的网站(zhàn )互(hù )相(xiàng )链接,每个(gè )站单(dān )独产(chǎn )生大量的内容吸(xī )引蜘蛛(zhū )来爬,几(jǐ )千个网站互链时,可以想象(xiàng )蜘蛛(zhū )的链(liàn )接(jiē )
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