Book Image

Apache Solr Enterprise Search Server - Third Edition

By : David Smiley, Eric Pugh, Kranti Parisa, Matt Mitchell
Book Image

Apache Solr Enterprise Search Server - Third Edition

By: David Smiley, Eric Pugh, Kranti Parisa, Matt Mitchell

Overview of this book

<p>Solr Apache is a widely popular open source enterprise search server that delivers powerful search and faceted navigation features—features that are elusive with databases. Solr supports complex search criteria, faceting, result highlighting, query-completion, query spell-checking, relevancy tuning, geospatial searches, and much more.</p> <p>This book is a comprehensive resource for just about everything Solr has to offer, and it will take you from first exposure to development and deployment in no time. Even if you wish to use Solr 5, you should find the information to be just as applicable due to Solr's high regard for backward compatibility. The book includes some useful information specific to Solr 5.</p>
Table of Contents (19 chapters)
Apache Solr Enterprise Search Server Third Edition
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Is Solr schemaless?


Solr supports a rich schema specification that allows for a wide range of flexibility in dealing with different document fields and has a "free" schema, in that, you don't have to define all of your fields ahead of time using dynamic fields. There are discussions in the search and NoSQL communities questioning the value in a schema. Having the ability to configure the fields in a configuration file, outside the actual code, gives more flexibility and makes us think about the data and business needs, which are key for any successful search engine.

Grant Ingersoll, Lucene and Solr committer, cofounder of the Apache Mahout machine learning project, and a long standing member of the Apache Software Foundation, has the following insightful commentary on the subject:

As for the notion of "schemaless", it's a bit of a marketing term, no? ("Less" schema is probably better, but it doesn't roll off the tongue now does it?) What is really meant by it, as far as I can tell, is that...