The following are some Solr resources other than this book:
Apache Solr 4 Cookbook, Rafał Kuć is another Solr book published by Packt Publishing. It is a style of book that comprises a series of posed questions or problems followed by their solution. You can find this at www.packtpub.com/big-data-and-business-intelligence/apache-solr-4-cookbook.
Apache Solr Reference Guide is a detailed, online resource contributed by Lucidworks to the Solr community. You can find the latest version at https://cwiki.apache.org/confluence/display/solr/Apache+Solr+Reference+Guide. Consider downloading the PDF corresponding to the Solr release you are using.
Solr's Wiki at http://wiki.apache.org/solr/ has a lot of great documentation and miscellaneous information. For a Wiki, it's fairly organized too. In particular, if you use a particular app-server in production, then there is probably a Wiki page there on specific details.
Within the Solr installation, you will also find that there are
README.txt
files in many directories within Solr and that the configuration files are very well documented. Read them!The
<[email protected]>
mailing list contains a wealth of information. If you have a few discriminating keywords, then you can find nuggets of information in there with a search engine. The mailing lists of Solr and other Lucene subprojects are best searched at http://find.searchhub.org/ or http://search-lucene.com/solr or http://nabble.com.Solr's issue tracker contains information on enhancements and bugs. It's available at http://issues.apache.org/jira/browse/SOLR and it uses Atlassian's JIRA software. Some of the comments attached to these issues can be extensive and enlightening.
There are, of course, resources for Lucene, such as Lucene In Action, Second Edition, Michael McCandless, Erik Hatcher, and Otis Gospodneti, Manning Publications. If you intend to dive into Solr's internals, then you will find Lucene resources helpful, but that is not the focus of this book.