楼(lóu )上(shàng )说的很多,我补充一(yī )下(xià ),正确的应该叫网络蜘(zhī )蛛(zhū ),又(yòu )称(chēng )爬虫(chóng ),本质是搜(sōu )索引(yǐn )擎派出(chū )的一(yī )个(gè )执(zhí )行抓取任(rèn )务(wù )的程序蜘蛛池(chí )的本质是大量的网站(zhàn )互(hù )相链接,每(měi )个站单独(dú )产生大量的内容(róng )吸引蜘蛛来爬,几(jǐ )千个网站互链(liàn )时,可(kě )以想(xiǎng )象蜘蛛的链(liàn )接
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