Book Image

Apache Solr 4 Cookbook

By : Rafał Kuć
Book Image

Apache Solr 4 Cookbook

By: Rafał Kuć

Overview of this book

<p>Apache Solr is a blazing fast, scalable, open source Enterprise search server built upon Apache Lucene. Solr is wildly popular because it supports complex search criteria, faceting, result highlighting, query-completion, query spell-checking, and relevancy tuning, amongst other numerous features.<br /><br />"Apache Solr 4 Cookbook" will show you how to get the most out of your search engine. Full of practical recipes and examples, this book will show you how to set up Apache Solr, tune and benchmark performance as well as index and analyze your data to provide better, more precise, and useful search data.<br /><br />"Apache Solr 4 Cookbook" will make your search better, more accurate and faster with practical recipes on essential topics such as SolrCloud, querying data, search faceting, text and data analysis, and cache configuration.<br /><br />With numerous practical chapters centered on important Solr techniques and methods, Apache Solr 4 Cookbook is an essential resource for developers who wish to take their knowledge and skills further. Thoroughly updated and improved, this Cookbook also covers the changes in Apache Solr 4 including the awesome capabilities of SolrCloud.</p>
Table of Contents (18 chapters)
Apache Solr 4 Cookbook
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

How to avoid swapping


One of the crucial things when running your Solr instance in production is performance. What you want is to give your clients relevant results in the blink of an eye. If your clients have to wait for results for too long, some of them may choose other vendors or sites that provide similar services. One of the things to remember when running a Java application such as Apache Solr is to ensure that the operating system won't write the heap to disk. This ensures that the part of the memory used by Solr won't be swapped at all. This recipe will show you how to achieve that on a Linux operating system.

Getting ready

Please note that the following recipe is only valid when running Apache Solr on a Linux operating system. In addition to that, please be advised that turning off swapping should only be done when you have enough memory to handle all the necessary application in your system and you want to be sure that there won't be any swapping.

How to do it...

  1. Before turning off...