DB-EnginesCrateDB bannerEnglish
Deutsch
Knowledge Base of Relational and NoSQL Database Management Systemsprovided by solid IT

DBMS > Solr

Solr System Properties

Please select another system to compare it with Solr.

Our visitors often compare Solr with Elasticsearch, Microsoft Azure Search and MongoDB.

Editorial information provided by DB-Engines
NameSolr
DescriptionA widely used enterprise search engine based on Apache Lucene
Primary database modelSearch engine
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score57.57
Rank#17  Overall
#3  Search engines
Websitelucene.apache.org/­solr
Technical documentationlucene.apache.org/­solr/­resources.html
DeveloperApache Software Foundation
Initial release2004
Current release8.2.0, July 2019
License infoCommercial or Open SourceOpen Source infoApache Version 2
Cloud-based only infoOnly available as a cloud serviceno
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageJava
Server operating systemsAll OS with a Java VM and a servlet container inforuns as a servlet in servlet container (e.g. Tomcat, Jetty is included)
Data schemeyes infoDynamic Fields enables on-the-fly addition of new fields
Typing infopredefined data types such as float or dateyes infosupports customizable data types and automatic typing
XML support infoSome form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.no
Secondary indexesyes infoAll search fields are automatically indexed
SQL infoSupport of SQLno infosupports 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 infoStored proceduresJava plugins
Triggersyes infoUser configurable commands triggered on index changes
Partitioning methods infoMethods for storing different data on different nodesSharding
Replication methods infoMethods for redundantly storing data on multiple nodescloud/distributed (via Zookeeper)
Master-slave replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsno
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency infoslaves poll the master in predefined intervalls
Foreign keys infoReferential integrityno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataoptimistic locking infoSolr 4
Concurrency infoSupport for concurrent manipulation of datayes
Durability infoSupport for making data persistentyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.no

More information provided by the system vendor

We invite representatives of system vendors to contact us for updating and extending the system information,
and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

Related products and services

We invite representatives of vendors of related products to contact us for presenting information about their offerings here.

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

Stock In The Spotlight:: Solar Alliance Energy Inc, (TSX Venture: SOLR)
10 October 2019, Ws News Alerts

Labrador rescue to hold adoption event
13 September 2019, KVOA Tucson News

Insight Engines, Powered By Apache
25 September 2019, CMSWire

Enterprise Search Software Market 2019 Valuable Growth Prospects and Upcoming Trends till 2027 with Swiftype, Algolia, Elasticsearch, Apache Solr, SearchSpring, AddSearch, SLI Systems, Amazon CloudSearch, Coveo, FishEye, and Inbenta
1 October 2019, Market Expert

Want More Ecommerce Conversions? Improve Your Product Search
9 October 2019, Practical Ecommerce

provided by Google News

Job opportunities

Data Architect (Remote)
First San Francisco Partners, Remote

Data Engineer
Everis, Connecticut

Associate - Data & Analytics Modeler
KPMG, Atlanta, GA

Java Developer
Piper Companies, Raleigh, NC

Associate - Data & Analytics Modeler
KPMG, Chicago, IL

jobs by Indeed




Share this page

Featured Products

Redis logo

Hosted, serverless DBaaS
in 3 steps.

30MB Free!
Start now.

Couchbase logo

SQL + JSON + NoSQL.
Power, flexibility & scale.
All open source.
Get started now.

RavenDB logo

Setup a fully managed RavenDB Cloud Database in minutes. Enjoy hosting, management, backups all in one place.
Grab a Free Instance

Neo4j logo

Get your free copy of the new O'Reilly book Graph Algorithms with 20+ examples for
machine learning, graph analytics and more.

Present your product here