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Apache Solr 3 Enterprise Search Server by Eric Pugh, David Smiley

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Leveraging Solr cores

Recall from Chapter 2, Schema and Text Analysis that you can either put different types of data into a single index or use separate indexes. Up to this point, the only way you would know how to use separate indexes is to actually run multiple instances of Solr. However, adding another complete instance of Solr for each type of data you want to index is a rather cumbersome process!

Solr cores allow multiple separate indexes to exist within a single Solr server instance as well as bringing features like hot core reloading and swapping that make administration easier.

Each Solr core consists of its own configuration files and data. Performing searches and indexing in a multicore setup is almost the same as using Solr without ...

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