The resources on the Internet are very rich, but it is difficult to search for information effectively. Building a search engine is the best way to solve this problem. This article first introduces the system structure of the search engine based on the Internet in detail, and then explains it in detail from three aspects: network robot, index engine, and Web server. In order to have a deeper understanding of this technology, I also personally implemented my own search engine - a news search engine. The news search engine parses and searches from the specified Web page according to the hyperlink, and indexes each searched news and adds it to the database. Then, after receiving the client request through the Web server, the matching news is searched from the index database. In the chapter introducing the search engine, in addition to a detailed explanation of the technical core, I also combined the implementation code of the news search engine to illustrate it, with pictures and texts, which is easy to understand.
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