Introduction and installation of Solr

Search solutions -Solr

solr Introduction to

Most search engine applications must have some kind of search function , The problem is that search functions are often a huge resource consumption, and they drag down the performance of your application due to heavy database loading . That's why it's a good idea to transfer the load to an external search server ,Apache Solr Is a popular open source search server , It works by using something like REST Of HTTP API, This ensures that you can use it from almost any programming language solr.
Solr It's an open source search platform , For building search applications . It is based on Lucene( Full text search engine ) above . Solr It's enterprise class , Fast and highly scalable . Use Solr The application built is very complex , Can provide high performance .
Solr You can talk to Hadoop Use it together . because Hadoop Deal with a lot of data ,Solr Help us find the information we need from such a large source . It's not just about searching ,Solr It can also be used for storage purposes . Like other NoSQL The database is the same , It is a non relational data storage and processing technology .
All in all ,Solr It's a scalable , Deployable , Search for / Storage engine , Optimize search for large amounts of text centric data .

solr Installation

   because solr Need to be in tomcat Operating under the environment of , therefore solr The installation steps are ：
    1： install  Tomcat, Unzip it .

2： decompression solr.

3： hold solr Under the dist Catalog solr-4.10.3.war Deploy to Tomcat\webapps Next ( Remove version number ).

4： start-up Tomcat decompression war package
Click on ：
function tomcat Program .

5： hold solr Next example/lib/ext All the jar package , Add to solr In the project (\WEB-INF\lib Under the table of contents ).

6： Create a solrhome .solr Under the /example/solr A directory is a solrhome. Copy this directory to D The disk was renamed solrhome .

	7： relation  solr  And  solrhome. Need modification  solr  engineering  web.xml  file .

Final successful result ：