Application of NoSQL Database in Web Crawling
Yunhua Gu, SHEN Shu -, Guansheng Zheng · International Journal of Digital Content Technology and its Applications · 2011
Web crawling is one of the most important applications of the Internet; the selection of database storage directly affects the performance of search engines. In the past few decades, the traditional relational databases almost monopolize all areas of the database applications. However, with the continuous development of web applications, they are facing the severe challenges. NoSQL database is the broad definition of non-relational data storage. This article gives the data storage structure and query of relational database and NoSQL database MongoDB to meteorological BBS information collection system, and the advantage and the disadvantage are listed in data structure, query and scalability. Compared to relational database, MongoDB supports schema-free, has great query performance with huge amount of data and provides easy horizontal scalability with low cost of hardware. It is more suitable for data storage in Web crawling.