![]() This is technically possible but non-trivial, and not supported. Apache Lucene is a modern, open source search library designed to provide both relevant results as well as high performance. Lucene is a file based indexing system, which means if an index is not located on the server that the request is coming from you have to ensure that indexes across all servers remain in sync. This paper presents both an overview of Lucene’s features as well as details on its community development model, architecture and implementation, including coverage of its indexing and scoring capabilities. Solr supports calls over HTTP(S) which means that the indexes are available to all servers in the environment that require it (content management and processing servers). You must use Solr if you have a scaled environment. On the other hand, the search engine that Sitecore uses for the operational databases does not have to be available from the Internet. Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. Therefore, this search engine must be available from the Internet. The project utilizes that lucene-core jar W file. We have a directory called 'indexDirectory'. We have a directory called 'filesToIndex' that contains text files that we are going to index. When visitors search for content, they use a search engine. The demonstration project's structure is shown here. If you use Sitecore Azure PaaS, you can also use Azure Search. The search engines are used for searching in the content databases, as well as for searching in a number of operational databases that Sitecore uses for collecting analytics data, test data, and so forth. ![]() Sitecore supports both Lucene and Solr search engines. General reasons for using Solr or Lucene search engines.
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