DDH vertical search engine commercial version v1.0
v0
DDH vertical search engine commercial version is currently the only vertical search engine system that can be commercially operated on the Internet. It is a network information integration system developed with JAVA language that can run in large-scale clusters. DDH integrates Nutch (open source search engine system), UCI (web page information extraction system) and SOLR (enterprise-level search application server). Regardless of scalability, system performance or stability, the DDH vertical search engine system can be regarded as one of the top vertical search engine systems.