DB-EnginesGraphDB 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
Score60.20
Rank#15  Overall
#3  Search engines
Websitelucene.apache.org/­solr
Technical documentationlucene.apache.org/­solr/­resources.html
DeveloperApache Software Foundation
Initial release2004
Current release7.4.0, June 2018
License infoCommercial or Open SourceOpen Source infoApache Version 2
Cloud-based infoOnly available as a cloud serviceno
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

Should You Worry About The Solar Alliance Energy Inc's (CVE:SOLR) Shareholder Register?
7 September 2018, Simply Wall St

How to secure your PostgreSQL database
19 September 2018, InfoWorld

Octopus Energy takes on 500 more customers as Gen4U ceases trading
13 September 2018, Utility Week

Ofgem consults on changes to supplier of last resort rules
11 September 2018, Utility Week

After Oracle WebLogic miner attack, critical Apache Solr bug is now targeted
9 March 2018, ZDNet

provided by Google News

Job opportunities

Entry Level DevOps Engineer
Perfect Sense, Reston, VA

Staff SW Engineer - Solution Engineering (REF9970V)
Visa, Palo Alto, CA

Back End Engineer
O'Reilly Media, Boston, MA

Scientific Software Developer
UC San Diego, San Diego, CA

Healthsparq Software Engineer II-IV
HealthSparq, Portland, OR

jobs by Indeed




Share this page

Featured Products

Neo4j logo

Get your step-by-step guide comparing RDBMS to graph databases, including data models, query languages, and deployment strategies.

RavenDB logo

Runs on Windows, Linux, Raspberry Pi. Easy to Operate, Fast Performance.
APIs for JS, .NET, Python.
Take a Free Download

Redis logo

Start now with Redis Cloud
Secure, highly available Redis as a serverless, hosted, fully managed cloud service.
Sign up here.

Couchbase logo

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

Present your product here