楼上(shàng )说(shuō )的很多,我补(bǔ )充一下,正确(què )的应该叫(jiào )网络蜘蛛,又(yòu )称爬(pá )虫(chóng ),本(běn )质是搜索引(yǐn )擎派出的(de )一(yī )个(gè )执行抓取任(rèn )务的(de )程序蜘蛛(zhū )池的本质是(shì )大量的网(wǎng )站互相链接(jiē ),每(měi )个(gè )站单独(dú )产生大量的内容吸引蜘蛛来(lái )爬,几(jǐ )千个网(wǎng )站互链时,可(kě )以想象(xiàng )蜘蛛(zhū )的链接
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