Search Indexes

Opencast comes with multiple search indexes which act both as a cache and as a fast way to perform full text searches on metadata. By default, the Solr search indexes are created automatically and no additional external software is required.

For Elasticsearch, a separate installation is required since Opencast version 9.0.

While this works well, all indexes can be deployed separately. This comes with the obvious drawback of a harder deployment but has also a few advantages like a smaller core system or being able to have some service redundancies which would not be possible otherwise.