Reload Core Configuration

A core in Solr is what holds your index. When changing core/index configuration such as synonyms, stop words, or protected words you need to reload the core to make the changes become active. To reload configuration you can either restart the whole Solr server or simply reload a specific core. Here you can reload the site's cores/indexes.

Empty Index

This will simply empty the site's index. When doing so it will take care of only deleting the currently selected site's documents even if you index multiple sites into one index.