http://www.mitbbs.com/article_t/JobHunting/33134433.html class Product { uuid List <uuid> pictures; List<uuid> merchants; // and a list of other meta data for this product, probably like category... } each product will have a uuid as prime key. list of pictures, specified by picture's uuid. list of merchants, specified by merchant's uuid 一个product page上, 其实会有很多API。 拿到了product class后, 通过picture 的uuid, 去call getThumbnail(pictureuuid)... 通过merchant id和product id, 可以link到某个merchant selling that product的product page suggest product其实是要有个ML layer, 这个ML layer有real time training和 historical batch training。。。。 然后这个ML layer会提供个getRelatedProduct API, 给个product uuid, 会给你a list of related products 这个product key, 就是front end给你的 比如http://www.amazon.com/gp/product/B007UZNS5W/ 简单的说, B007UZNS5W 就是product key,amazon要display page, 就会去call 很...