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DBMS > Solr

Solr System Properties

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Editorial information provided by DB-Engines
NameSolr
DescriptionA widely used enterprise search engine based on Apache Lucene
Database modelSearch engine
DB-Engines Ranking measures the popularity of database management systems
Trend Chart
Score63.99
Rank#14  Overall
#2  Search engines
Websitelucene.apache.org/­solr
Technical documentationlucene.apache.org/­solr/­documentation.html
DeveloperApache Software Foundation
Initial release2004
Current release6.4.2, March 2017
License Commercial or Open SourceOpen Source Apache Version 2
Cloud-based Only available as a cloud serviceno
Implementation languageJava
Server operating systemsAll OS with a Java VM and a servlet container runs as a servlet in servlet container (e.g. Tomcat, Jetty is included)
Data schemeyes Dynamic Fields enables on-the-fly addition of new fields
Typing predefined data types such as float or dateyes supports customizable data types and automatic typing
Secondary indexesyes All search fields are automatically indexed
SQL Support of (almost full) SQL standard (DML, DDL and DCL statements)no supports limited query time joins
APIs and other access methodsJava API
RESTful HTTP API
Supported programming languages.Net
Erlang
Java
JavaScript
any language that supports sockets and either XML or JSON
Perl
PHP
Python
Ruby
Scala
Server-side scripts Stored proceduresJava plugins
Triggersyes User configurable commands triggered on index changes
Partitioning methods Methods for storing different data on different nodesSharding
Replication methods Methods for redundantly storing data on multiple nodescloud/distributed (via Zookeeper)
Master-slave replication
MapReduce Offers an API for user-defined Map/Reduce methodsno
Consistency concepts Methods to ensure consistency in a distributed systemEventual Consistency slaves poll the master in predefined intervalls
Foreign keys Referential integrityno
Transaction concepts Support to ensure data integrity after non-atomic manipulations of dataoptimistic locking Solr 4
Concurrency Support for concurrent manipulation of datayes
Durability Support for making data persistentyes

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More resources
Solr
DB-Engines blog posts

Elasticsearch replaced Solr as the most popular search engine
12 January 2016, Paul Andlinger

Enterprise Search Engines almost double their popularity in the last 12 months
2 July 2014, Paul Andlinger

The DB-Engines ranking includes now search engines
4 February 2013, Paul Andlinger

show all

Recent citations in the news

Bloomberg Adds Machine-Learning To Apache Solr Search
22 February 2017, InformationWeek

Google site search is on the way out. Now what?
22 March 2017, Search Engine Land

Ratpacked: Using Spring Cloud Contract as Client
6 March 2017, DZone News

Solr vs. Elasticsearch: 5 Factors to Consider
5 December 2016, CMSWire

Synechron launches Artificial Intelligence solution
23 March 2017, Automated Trader

provided by Google News




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