Sophora Indexing Service Add-on

Without the module, each Sophora Server has its own integrated Solr search engine which takes care of indexing.

The Sophora Indexing Service (nickname "SISI") complements the Sophora Server so that only a single, locally or cloud-operated Solr cluster is used for all Sophora servers.

Advantages include:

1. searches become more efficient and scale better,
2. Sophora servers are relieved,
3. and cloud infrastructure is better supported.