价格比较 前端开发
我想知道是否有人可以对价格比较前端开发有所启发。为了增强这个问题，我的怀疑主要在于价格比较引擎将销售相同产品的商店分组到一个页面的方式，例如：http://www.shopping.com/xPO-LG-42LD450
他们是否有一个产品和图片列表作为内部方案，在其中抓取网站匹配结果和分组他们是否按名称、SKU 或类似内容使用 SQL 查询？
他们是否使用 sql 查询直接抓取网站并对所有结果进行分组，而没有定义匹配的预定义内部产品数据库？。
任何帮助将不胜感激。太感谢了。
I was wondering if any can shed some light on price comparison frontend development. In order to enhance the question my doubt resides mainly in the way that price comparison engines group stores selling same products into one single page eg: http://www.shopping.com/xPO-LG-42LD450
Do they have a list of products and pictures as an internal scheme, where they crawl websites matching results and grouping them using a sql query by name, sku or similar?
Do they crawl websites and group all results directly by using a sql query, with no predefined internal products database defined to match on?.
Any Help will be appreciated. Thank you so much.
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大多数比价网站将通过以下方式在其网站上获取产品：
首先，任何比价网站都会为商家提供一个位置，以便向他们提供产品的 Feed。这就是这些网站通常赚钱的方式。该提要将包含基本的产品信息，包括图片，最重要的是制造商的 SKU，以便轻松地将产品分组在一起。如果没有 SKU，除了标题匹配之外，很难将所有内容分组在一起，这可能会变得非常不稳定，因为每个商家对事物的命名都略有不同。
他们通常会抓取运行联属服务（例如 Amazon.com）的较大网站，以建立产品数据库，同时也从联属销售中获取收入。
一旦他们有各种商店向他们提供提要，商店将支付每次点击费率或类似费用，并且比较网站将能够向消费者展示各种产品。
Most price comparison sites will the following to get the products on their sites:
First, any comparison site will have a place for merchants to give them a feed of their products. This is how these sites generally make money. The feed would contain essential product information including pictures and most importantly a Manufacturer's SKU to make it easy to group the products together. Without a SKU it's pretty tough to group things together apart from title matching, which can get quite flaky as every merchant names things slightly differently.
They will generally crawl the larger sites that run affiliate services like Amazon.com in order to built a product database, but also generate revenue from the affiliate sales.
Once they have a variety of stores giving them their feeds, the stores will pay a per-click rate or similar and the comparison site will be able to display a variety of products for the consumer.