关于新的Google即时搜索的工作原理有什么想法?似乎只是AJAX对旧搜索的调用,但是要简化这么多Google很难。有人猜测吗?
编辑:我知道每次按键都发送AJAX,但这是可预测的吗?还是您认为这只是常规的Google搜索?
更新: Google刚刚在幕后发布了一篇名为Google Instant的博客文章。这是一个有趣的读物,并且显然与此问题有关。例如,您可以阅读他们如何解决服务器端的额外负载(根据文章,为5-7倍)。下面的答案检查了客户端发生的情况:
通过Firebug进行检查,Google会在每次按键时执行Ajax GET请求:
我想它的工作方式与自动完成相同。但是,这一次,它也以JSON格式返回部分完整的搜索词组的搜索结果。
在键入“堆栈溢出”时检查JSON响应之一:
我们可以看到JSON响应包含了在我们键入内容时构造搜索结果的内容。
格式化的JSON响应如下所示:
{ e: "j9iHTLXlLNmXOJLQ3cMO", c: 1, u: "http://www.google.com/search?hl\x3den\x26expIds\x3d17259,24472,24923,25260,25901,25907,26095,26446,26530\x26sugexp\x3dldymls\x26xhr\x3dt\x26q\x3dStack%20Overflow\x26cp\x3d6\x26pf\x3dp\x26sclient\x3dpsy\x26aq\x3df\x26aqi\x3dg4g-o1\x26aql\x3d\x26oq\x3dStack+\x26gs_rfai\x3d\x26pbx\x3d1\x26fp\x3df97fdf10596ae095\x26tch\x3d1\x26ech\x3d1\x26psi\x3dj9iHTO3xBo2CONvDzaEO12839712156911", d: "\x3clink rel\x3dprefetch href\x3d\x22http://stackoverflow.com/\x22\x3e\x3cscript\x3eje.pa(_loc, \x27rso\x27, \x27\\x3c!--m--\\x3e\\x3clink rel\\x3dprefetch href\\x3d\\x22http://stackoverflow.com/\\x22\\x3e\\x3cli class\\x3dg\\x3e\\x3ch3 class\\x3d\\x22r\\x22\\x3e\\x3ca href\\x3d\\x22http://stackoverflow.com/\\x22 class\\x3dl onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x271\\x27,\\x27AFQjCNERidL9Hb6OvGW93_Y6MRj3aTdMVA\\x27,\\x27\\x27,\\x270CBYQFjAA\\x27)\\x22\\x3e\\x3cem\\x3eStack Overflow\\x3c/em\\x3e\\x3c/a\\x3e\\x3c/h3\\x3e\\x3cdiv class\\x3d\\x22s\\x22\\x3eA language-independent collaboratively edited question and answer site for programmers.\\x3cbr\\x3e\\x3cspan class\\x3df\\x3e\\x3ccite\\x3e\\x3cb\\x3estackoverflow\\x3c/b\\x3e.com/\\x3c/cite\\x3e - 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Blog – \\x3cem\\x3eStack Overflow\\x3c/em\\x3e\\x3c/a\\x3e\\x3c/h3\\x3e\\x3cdiv class\\x3d\\x22s hc\\x22\\x3eJoel and Jeff sit down with our new community coordinator, Robert Cartaino, to record a “bonus” podcast discussing the future of \\x3cem\\x3eStack Overflow\\x3c/em\\x3e and Stack \\x3cb\\x3e...\\x3c/b\\x3e\\x3cbr\\x3e\\x3cspan class\\x3df\\x3e\\x3ccite\\x3eblog.\\x3cb\\x3estackoverflow\\x3c/b\\x3e.com/category/podcasts/\\x3c/cite\\x3e - \\x3cspan class\\x3dgl\\x3e\\x3ca href\\x3d\\x22http://webcache.googleusercontent.com/search?q\\x3dcache:JT0sWmmtiAEJ:blog.stackoverflow.com/category/podcasts/+Stack+Overflow\\x26amp;cd\\x3d5\\x26amp;hl\\x3den\\x26amp;ct\\x3dclnk\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x275\\x27,\\x27AFQjCNErCiLBch55HA8i5BAdChcmQYH8nw\\x27,\\x27\\x27,\\x270CDMQIDAE\\x27)\\x22\\x3eCached\\x3c/a\\x3e - \\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3drelated:blog.stackoverflow.com/category/podcasts/+Stack+Overflow\\x26amp;tbo\\x3d1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CDQQHzAE\\x22\\x3eSimilar\\x3c/a\\x3e\\x3c/span\\x3e\\x3c/span\\x3e\\x3c/div\\x3e\\x3c!--n--\\x3e\\x3c!--m--\\x3e\\x3cli class\\x3dg\\x3e\\x3ch3 class\\x3d\\x22r\\x22\\x3e\\x3ca href\\x3d\\x22http://itc.conversationsnetwork.org/series/stackoverflow.html\\x22 class\\x3dl onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x276\\x27,\\x27AFQjCNHG9l1PMbilYkhohNFuj3g6ce1LuA\\x27,\\x27\\x27,\\x270CDUQFjAF\\x27)\\x22\\x3e\\x3cem\\x3eStackOverflow\\x3c/em\\x3e\\x3c/a\\x3e\\x3c/h3\\x3e\\x3cdiv class\\x3d\\x22s\\x22\\x3eJoel and Jeff sit down with our new community coordinator, Robert Cartaino, to discuss the future of \\x3cem\\x3eStack Overflow\\x3c/em\\x3e and Stack Exchange 2.0. \\x3cb\\x3e...\\x3c/b\\x3e\\x3cbr\\x3e\\x3cspan class\\x3df\\x3e\\x3ccite\\x3eitc.conversationsnetwork.org/series/\\x3cb\\x3estackoverflow\\x3c/b\\x3e.html\\x3c/cite\\x3e - \\x3cspan class\\x3dgl\\x3e\\x3ca href\\x3d\\x22http://webcache.googleusercontent.com/search?q\\x3dcache:8MkFpx7D4wYJ:itc.conversationsnetwork.org/series/stackoverflow.html+Stack+Overflow\\x26amp;cd\\x3d6\\x26amp;hl\\x3den\\x26amp;ct\\x3dclnk\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x276\\x27,\\x27AFQjCNFP62Bg_o2kaz3jzXxzsrTs_7RdNA\\x27,\\x27\\x27,\\x270CDcQIDAF\\x27)\\x22\\x3eCached\\x3c/a\\x3e - \\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3drelated:itc.conversationsnetwork.org/series/stackoverflow.html+Stack+Overflow\\x26amp;tbo\\x3d1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CDgQHzAF\\x22\\x3eSimilar\\x3c/a\\x3e\\x3c/span\\x3e\\x3c/span\\x3e\\x3c/div\\x3e\\x3c!--n--\\x3e\\x3c!--m--\\x3e\\x3cli class\\x3dg\\x3e\\x3ch3 class\\x3d\\x22r\\x22\\x3e\\x3ca href\\x3d\\x22http://support.microsoft.com/kb/145799\\x22 class\\x3dl onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x277\\x27,\\x27AFQjCNHzyj5rHEX7IiyFWnP0ziE3B32rGg\\x27,\\x27\\x27,\\x270CDkQFjAG\\x27)\\x22\\x3eHow to Troubleshoot Windows Internal \\x3cem\\x3eStack Overflow\\x3c/em\\x3e Error Messages\\x3c/a\\x3e\\x3c/h3\\x3e\\x3cdiv class\\x3d\\x22s\\x22\\x3eThis article lists steps to help you troubleshoot problems with \\x3cem\\x3estack overflow\\x3c/em\\x3e errors in Windows. Stacks are reserved memory that programs use to process \\x3cb\\x3e...\\x3c/b\\x3e\\x3cbr\\x3e\\x3cspan class\\x3df\\x3e\\x3ccite\\x3esupport.microsoft.com/kb/145799\\x3c/cite\\x3e - \\x3cspan class\\x3dgl\\x3e\\x3ca href\\x3d\\x22http://webcache.googleusercontent.com/search?q\\x3dcache:ECO9ORCsraAJ:support.microsoft.com/kb/145799+Stack+Overflow\\x26amp;cd\\x3d7\\x26amp;hl\\x3den\\x26amp;ct\\x3dclnk\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x277\\x27,\\x27AFQjCNHYsox9EW1Ye9Nn2G6WQzEpJDOzcw\\x27,\\x27\\x27,\\x270CDsQIDAG\\x27)\\x22\\x3eCached\\x3c/a\\x3e - \\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3drelated:support.microsoft.com/kb/145799+Stack+Overflow\\x26amp;tbo\\x3d1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CDwQHzAG\\x22\\x3eSimilar\\x3c/a\\x3e\\x3c/span\\x3e\\x3c/span\\x3e\\x3c/div\\x3e\\x3c!--n--\\x3e\\x3c!--m--\\x3e\\x3cli class\\x3dg\\x3e\\x3ch3 class\\x3d\\x22r\\x22\\x3e\\x3ca href\\x3d\\x22http://stackoverflow.carsonified.com/\\x22 class\\x3dl onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x278\\x27,\\x27AFQjCNHcEPoch5soLj2CpLpRfnW-Z2-aLw\\x27,\\x27\\x27,\\x270CD0QFjAH\\x27)\\x22\\x3e\\x3cem\\x3eStackOverflow\\x3c/em\\x3e DevDays » Home\\x3c/a\\x3e\\x3c/h3\\x3e\\x3cdiv class\\x3d\\x22s\\x22\\x3e\\x3cem\\x3eStackOverflow\\x3c/em\\x3e Dev Days is run by Carsonified, so please give us a shout if you need anything or are interested in sponsoring the event. \\x3cb\\x3e...\\x3c/b\\x3e\\x3cbr\\x3e\\x3cspan class\\x3df\\x3e\\x3ccite\\x3e\\x3cb\\x3estackoverflow\\x3c/b\\x3e.carsonified.com/\\x3c/cite\\x3e - \\x3cspan class\\x3dgl\\x3e\\x3ca href\\x3d\\x22http://webcache.googleusercontent.com/search?q\\x3dcache:uhl8NPgikN0J:stackoverflow.carsonified.com/+Stack+Overflow\\x26amp;cd\\x3d8\\x26amp;hl\\x3den\\x26amp;ct\\x3dclnk\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x278\\x27,\\x27AFQjCNFf9Vl5L3FaQGPapUpIFw5gqVUCnA\\x27,\\x27\\x27,\\x270CD8QIDAH\\x27)\\x22\\x3eCached\\x3c/a\\x3e - \\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3drelated:stackoverflow.carsonified.com/+Stack+Overflow\\x26amp;tbo\\x3d1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CEAQHzAH\\x22\\x3eSimilar\\x3c/a\\x3e\\x3c/span\\x3e\\x3c/span\\x3e\\x3c/div\\x3e\\x3c!--n--\\x3e\\x3c!--m--\\x3e\\x3cli class\\x3dg\\x3e\\x3ch3 class\\x3d\\x22r\\x22\\x3e\\x3ca href\\x3d\\x22http://stackoverflow.org/\\x22 class\\x3dl onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x279\\x27,\\x27AFQjCNF-YrPvTLTJlFFDJrJE0cjGdlOpbg\\x27,\\x27\\x27,\\x270CEEQFjAI\\x27)\\x22\\x3e\\x3cem\\x3eStackOverflow\\x3c/em\\x3e.org\\x3c/a\\x3e\\x3c/h3\\x3e\\x3cdiv class\\x3d\\x22s\\x22\\x3e\\x3cem\\x3eStackOverflow\\x3c/em\\x3e.org began as the merging of two ideas that have been kicking around in my head for years. First, I wanted a dorky programming-related domain \\x3cb\\x3e...\\x3c/b\\x3e\\x3cbr\\x3e\\x3cspan class\\x3df\\x3e\\x3ccite\\x3e\\x3cb\\x3estackoverflow\\x3c/b\\x3e.org/\\x3c/cite\\x3e - \\x3cspan class\\x3dgl\\x3e\\x3ca href\\x3d\\x22http://webcache.googleusercontent.com/search?q\\x3dcache:u0dIlJW-XMYJ:stackoverflow.org/+Stack+Overflow\\x26amp;cd\\x3d9\\x26amp;hl\\x3den\\x26amp;ct\\x3dclnk\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x279\\x27,\\x27AFQjCNHcJcV2QVybr6voztyPwHCrNOOD1w\\x27,\\x27\\x27,\\x270CEMQIDAI\\x27)\\x22\\x3eCached\\x3c/a\\x3e - \\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3drelated:stackoverflow.org/+Stack+Overflow\\x26amp;tbo\\x3d1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CEQQHzAI\\x22\\x3eSimilar\\x3c/a\\x3e\\x3c/span\\x3e\\x3c/span\\x3e\\x3c/div\\x3e\\x3c!--n--\\x3e\\x3c!--m--\\x3e\\x3cli class\\x3dg\\x3e\\x3ch3 class\\x3d\\x22r\\x22\\x3e\\x3ca href\\x3d\\x22http://embeddedgurus.com/stack-overflow/\\x22 class\\x3dl onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x2710\\x27,\\x27AFQjCNFYQ5E8irNUCpRsbOHHyfc0oqGpWw\\x27,\\x27\\x27,\\x270CEUQFjAJ\\x27)\\x22\\x3e\\x3cem\\x3eStack Overflow\\x3c/em\\x3e\\x3c/a\\x3e\\x3c/h3\\x3e\\x3cdiv class\\x3d\\x22s\\x22\\x3e\\x3cem\\x3eStack Overflow\\x3c/em\\x3e. Nigel Jones. Nigel Jones has over 20 years of experience designing electronic circuits and firmware. (full bio). Pages. Contact Nigel. Links \\x3cb\\x3e...\\x3c/b\\x3e\\x3cbr\\x3e\\x3cspan class\\x3df\\x3e\\x3ccite\\x3eembeddedgurus.com/\\x3cb\\x3estack\\x3c/b\\x3e-\\x3cb\\x3eoverflow\\x3c/b\\x3e/\\x3c/cite\\x3e - \\x3cspan class\\x3dgl\\x3e\\x3ca href\\x3d\\x22http://webcache.googleusercontent.com/search?q\\x3dcache:Rl_rUfEG_fIJ:embeddedgurus.com/stack-overflow/+Stack+Overflow\\x26amp;cd\\x3d10\\x26amp;hl\\x3den\\x26amp;ct\\x3dclnk\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x2710\\x27,\\x27AFQjCNFqMjsc1pBI9JexjMSPY7wm5QLI8w\\x27,\\x27\\x27,\\x270CEcQIDAJ\\x27)\\x22\\x3eCached\\x3c/a\\x3e\\x3c/span\\x3e\\x3c/span\\x3e\\x3c/div\\x3e\\x3c!--n--\\x3e\x27,_ss);\x3c/script\x3e" }/*""*/{ e: "j9iHTLXlLNmXOJLQ3cMO", c: 1, u: "http://www.google.com/search?hl\x3den\x26expIds\x3d17259,24472,24923,25260,25901,25907,26095,26446,26530\x26sugexp\x3dldymls\x26xhr\x3dt\x26q\x3dStack%20Overflow\x26cp\x3d6\x26pf\x3dp\x26sclient\x3dpsy\x26aq\x3df\x26aqi\x3dg4g-o1\x26aql\x3d\x26oq\x3dStack+\x26gs_rfai\x3d\x26pbx\x3d1\x26fp\x3df97fdf10596ae095\x26tch\x3d1\x26ech\x3d1\x26psi\x3dj9iHTO3xBo2CONvDzaEO12839712156911", d: "\x3cscript\x3eje.p(_loc,\x27botstuff\x27,\x27 \\x3cdiv id\\x3dbrs style\\x3d\\x22clear:both;margin-bottom:17px;overflow:hidden\\x22\\x3e\\x3cdiv class\\x3d\\x22med\\x22 style\\x3d\\x22text-align:left\\x22\\x3eSearches related to \\x3cem\\x3eStack Overflow\\x3c/em\\x3e\\x3c/div\\x3e\\x3cdiv class\\x3dbrs_col\\x3e\\x3cp\\x3e\\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3dstack+overflow+error\\x26amp;revid\\x3d-1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CEkQ1QIoAA\\x22\\x3estack overflow \\x3cb\\x3eerror\\x3c/b\\x3e\\x3c/a\\x3e\\x3c/p\\x3e\\x3cp\\x3e\\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3dstack+overflow+internet+explorer\\x26amp;revid\\x3d-1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CEoQ1QIoAQ\\x22\\x3estack overflow \\x3cb\\x3einternet explorer\\x3c/b\\x3e\\x3c/a\\x3e\\x3c/p\\x3e\\x3cp\\x3e\\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3dfix+stack+overflow\\x26amp;revid\\x3d-1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CEsQ1QIoAg\\x22\\x3e\\x3cb\\x3efix\\x3c/b\\x3e stack overflow\\x3c/a\\x3e\\x3c/p\\x3e\\x3cp\\x3e\\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3dstack+overflow+xp\\x26amp;revid\\x3d-1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CEwQ1QIoAw\\x22\\x3estack overflow \\x3cb\\x3exp\\x3c/b\\x3e\\x3c/a\\x3e\\x3c/p\\x3e\\x3c/div\\x3e\\x3cdiv class\\x3dbrs_col\\x3e\\x3cp\\x3e\\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3dstack+overflow+javascript\\x26amp;revid\\x3d-1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CE0Q1QIoBA\\x22\\x3estack overflow \\x3cb\\x3ejavascript\\x3c/b\\x3e\\x3c/a\\x3e\\x3c/p\\x3e\\x3cp\\x3e\\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3dstack+overflow+java\\x26amp;revid\\x3d-1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CE4Q1QIoBQ\\x22\\x3estack overflow \\x3cb\\x3ejava\\x3c/b\\x3e\\x3c/a\\x3e\\x3c/p\\x3e\\x3cp\\x3e\\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3dstack+overflow+c%2B%2B\\x26amp;revid\\x3d-1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CE8Q1QIoBg\\x22\\x3estack overflow \\x3cb\\x3ec++\\x3c/b\\x3e\\x3c/a\\x3e\\x3c/p\\x3e\\x3cp\\x3e\\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3dstack+overflow+windows+xp\\x26amp;revid\\x3d-1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CFAQ1QIoBw\\x22\\x3estack overflow \\x3cb\\x3ewindows xp\\x3c/b\\x3e\\x3c/a\\x3e\\x3c/p\\x3e\\x3c/div\\x3e\\x3c/div\\x3e \x27,_ss);/* */\x3c/script\x3e" }/*""*/
进一步的非技术性阅读: