Apachesolr Url Switch
This project is not covered by Drupal’s security advisory policy.
Provides a method of switching urls for solr entries.
This is predominately useful when attempting to index a site on one url and then swap out the index for another url.
Note: There are other issues with an index swap of this nature, but this allows you to avoid some of the pain of doing a full index on a production site with a great deal of content.