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DBMS > Druid vs. Solr

System Properties Comparison Druid vs. Solr

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Editorial information provided by DB-Engines
NameDruid  Xexclude from comparisonSolr  Xexclude from comparison
DescriptionOpen-source analytics data store designed for OLAP queries on timeseries dataA widely used distributed, scalable search engine based on Apache Lucene
Primary database modelRelational DBMS
Time Series DBMS
Search engine
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.95
Rank#119  Overall
#57  Relational DBMS
#8  Time Series DBMS
Score51.26
Rank#18  Overall
#3  Search engines
Websitedruid.apache.orglucene.apache.org/­solr
Technical documentationdruid.apache.org/­docs/­latest/­designlucene.apache.org/­solr/­resources.html
DeveloperMetamarkets Group and contributorsApache Software Foundation
Initial release20122006
Current release8.5.2, May 2020
License infoCommercial or Open SourceOpen Source infoApache license v2Open Source infoApache Version 2
Cloud-based only infoOnly available as a cloud servicenono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaJava
Server operating systemsLinux
OS X
Unix
All OS with a Java VM inforuns as a servlet in servlet container (e.g. Tomcat, Jetty is included)
Data schemeyes infoschema-less columns are supportedyes infoDynamic Fields enables on-the-fly addition of new fields
Typing infopredefined data types such as float or dateyesyes 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.noyes
Secondary indexesyesyes infoAll search fields are automatically indexed
SQL infoSupport of SQLSQL support via Apache Calcite adapterSolr Parallel SQL Interface
APIs and other access methodsJSON over HTTPJava API
RESTful HTTP/JSON API
Supported programming languagesClojure
JavaScript
PHP
Python
R
Ruby
Scala
.Net
Erlang
Java
JavaScript
any language that supports sockets and either XML or JSON
Perl
PHP
Python
Ruby
Scala
Server-side scripts infoStored proceduresnoJava plugins
Triggersnoyes infoUser configurable commands triggered on index changes
Partitioning methods infoMethods for storing different data on different nodesShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesyes, via HDFS, S3 or other storage enginesyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnospark-solr: github.com/­lucidworks/­spark-solr and streaming expressions to reduce
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency
Foreign keys infoReferential integritynono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanooptimistic locking
Concurrency infoSupport for concurrent manipulation of datayesyes
Durability infoSupport for making data persistentyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyes
User concepts infoAccess controlno infoavailable via extensionsyes

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More resources
DruidSolr
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Recent citations in the news

Introducing Apache Druid
17 January 2020, insideBIGDATA

Druid Developer Expands Query Options
17 April 2020, Datanami

Druid Developer Ramps Cloud-Native Approach
10 December 2019, Datanami

Real-Time Analytics from Your Data Lake Teaching the Elephant to Dance
21 January 2020, insideBIGDATA

Imply launches with $2M to commercialize the Druid open-source data store
19 October 2015, VentureBeat

provided by Google News

SOLR's labor and finance activism
25 May 2020, North by Northwestern

Solar Alliance Shares for Debt Agreements TSX Venture Exchange:SOLR
6 May 2020, GlobeNewswire

Global Enterprise Search Software Market Expected to Reach Highest CAGR by 2025 Top Players: Swiftype, Algolia, Elasticsearch, Apache Solr, SearchSpring, AddSearch
2 June 2020, Cole of Duty

COVID 19 Impacted Analysis on Enterprise Search Market Demand & SWOT Analysis By 2025: Key Players Swiftype | Algolia | Elasticsearch | Apache Solr | SearchSpring | AddSearch
1 June 2020, 3rd Watch News

Enterprise Search Software Market Future and Technological Advancement by Key Companies: Swiftype, Algolia, Elasticsearch, Apache Solr, SearchSpring, AddSearch
29 May 2020, Newark Now

provided by Google News

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