楼上说的很多,我补充一(yī )下,正确的应(yīng )该叫网络(luò )蜘蛛(zhū ),又称爬虫,本质是(shì )搜(sōu )索引擎派出(chū )的(de )一(yī )个执行抓取任务的程序蜘蛛池(chí )的(de )本质(zhì )是大量的(de )网(wǎng )站互相(xiàng )链接(jiē ),每(měi )个站单(dān )独产(chǎn )生大(dà )量的内容吸(xī )引蜘(zhī )蛛来爬,几千个网(wǎng )站(zhàn )互链时(shí ),可以(yǐ )想象蜘蛛(zhū )的链接
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