DB-EnginesInfluxDB: Focus on building software with an easy-to-use serverless, scalable time series platformEnglish
Deutsch
Knowledge Base of Relational and NoSQL Database Management Systemsprovided by solid IT

DBMS > Apache Druid vs. Elasticsearch vs. Realm vs. RocksDB

System Properties Comparison Apache Druid vs. Elasticsearch vs. Realm vs. RocksDB

Please select another system to include it in the comparison.

Editorial information provided by DB-Engines
NameApache Druid  Xexclude from comparisonElasticsearch  Xexclude from comparisonRealm  Xexclude from comparisonRocksDB  Xexclude from comparison
DescriptionOpen-source analytics data store designed for sub-second OLAP queries on high dimensionality and high cardinality dataA distributed, RESTful modern search and analytics engine based on Apache Lucene infoElasticsearch lets you perform and combine many types of searches such as structured, unstructured, geo, and metricA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core DataEmbeddable persistent key-value store optimized for fast storage (flash and RAM)
Primary database modelRelational DBMS
Time Series DBMS
Search engineDocument storeKey-value store
Secondary database modelsDocument store
Spatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score3.01
Rank#95  Overall
#49  Relational DBMS
#6  Time Series DBMS
Score155.76
Rank#8  Overall
#1  Search engines
Score9.58
Rank#47  Overall
#7  Document stores
Score3.44
Rank#88  Overall
#14  Key-value stores
Websitedruid.apache.orgwww.elastic.co/­elasticsearchrealm.iorocksdb.org
Technical documentationdruid.apache.org/­docs/­latest/­designwww.elastic.co/­guide/­en/­elasticsearch/­reference/­current/­index.htmlrealm.io/­docsgithub.com/­facebook/­rocksdb/­wiki
DeveloperApache Software Foundation and contributorsElasticRealm, acquired by MongoDB in May 2019Facebook, Inc.
Initial release2012201020142013
Current release0.21.0, April 20217.8.0, June 20206.22.1, July 2021
License infoCommercial or Open SourceOpen Source infoApache license v2Open Source infoApache Version 2; Elastic LicenseOpen SourceOpen Source infoBSD
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Elasticsearch Service on Elastic Cloud: Try out the official hosted Elasticsearch and Kibana offering available on Amazon Web Services, Google Cloud and Microsoft Azure that's powered by the creators of Elasticsearch.
Implementation languageJavaJavaC++
Server operating systemsLinux
OS X
Unix
All OS with a Java VMAndroid
Backend: server-less
iOS
Windows
Data schemeyes infoschema-less columns are supportedschema-free infoFlexible type definitions. Once a type is defined, it is persistentyesschema-free
Typing infopredefined data types such as float or dateyesyesyesno
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.nononono
Secondary indexesyesyes infoAll search fields are automatically indexedyesno
SQL infoSupport of SQLSQL for queryingSQL-like query languagenono
APIs and other access methodsJDBC
RESTful HTTP/JSON API
Java API
RESTful HTTP/JSON API
C++ API
Java API
Supported programming languagesClojure
JavaScript
PHP
Python
R
Ruby
Scala
.Net
Groovy
Community Contributed Clients
Java
JavaScript
Perl
PHP
Python
Ruby
.Net
Java infowith Android only
Objective-C
React Native
Swift
C++
Java
Server-side scripts infoStored proceduresnoyesno inforuns within the applications so server-side scripts are unnecessaryno
Triggersnoyes infoby using the 'percolation' featureyes infoChange Listenersno
Partitioning methods infoMethods for storing different data on different nodesSharding infomanual/auto, time-basedShardingnonenone
Replication methods infoMethods for redundantly storing data on multiple nodesyes, via HDFS, S3 or other storage enginesyesnonenone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoES-Hadoop Connectornono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency infoSynchronous doc based replication. Get by ID may show delays up to 1 sec. Configurable write consistency: one, quorum, allImmediate Consistency
Foreign keys infoReferential integritynononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanonoACIDyes
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noMemcached and Redis integrationyes infoIn-Memory realmyes
User concepts infoAccess controlRBAC using LDAP or Druid internals for users and groups for read/write by datasource and systemyesno
More information provided by the system vendor
Apache DruidElasticsearchRealmRocksDB
Specific characteristicsElasticsearch is an open source search and analytics engine. As the heart of the...
» more
Now a part of MongoDB Data Platform , Realm Database is the fast, easy to use, and...
» more
Competitive advantagesOpen source Real-time indexsearch, and analysis Horizontally scalable Distributed...
» more
Realm ensures offline-first functionality, meaning apps run smoothly and deliver...
» more
Typical application scenariosEnterprise search (search experiences for your workplace, apps, and websites), observability...
» more
Mobile Consumer Apps First-Line Worker Apps
» more
Key customersThousands of organizations worldwide, including Cisco, eBay, Goldman Sachs, Microsoft,...
» more
Cathay Pacific Royal Carribbean Cruise Lines Open Source Database powers apps built...
» more
Market metricsPublic as of October 2018 Distributed workforce with 1900+ employees around the globe​...
» more
Used by 100,000+ developers 2 bn installs Currently used in 40k+ applications in...
» more
Licensing and pricing modelsThe Elastic Stack (Elasticsearch, Kibana, Beats, and Logstash) is free and open source...
» more
Realm database is licensed under the Apache License v2.0.
» more

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
3rd partiesElastic Cloud: Try the official managed Elasticsearch.
» more

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

More resources
Apache DruidElasticsearchRealmRocksDB
DB-Engines blog posts

PostgreSQL is the DBMS of the Year 2017
2 January 2018, Paul Andlinger, Matthias Gelbmann

Elasticsearch moved into the top 10 most popular database management systems
3 July 2017, Matthias Gelbmann

MySQL, PostgreSQL and Redis are the winners of the March ranking
2 March 2016, Paul Andlinger

show all

MySQL, PostgreSQL and Redis are the winners of the March ranking
2 March 2016, Paul Andlinger

show all

Recent citations in the news

SD Times news digest: TypeScript 4.4 beta, Rust support improvements in Linux kernel, Sauce Labs acquires Backtrace
6 July 2021, SDTimes.com

Druid-Backer Imply Lands $70M to Drive Analytics in Motion
17 June 2021, Datanami

Apache Druid Adds Ranger Integration
24 August 2020, iProgrammer

Introducing Apache Druid
17 January 2020, insideBIGDATA

Data analytics startup Imply nabs $70M to grow cloud service
16 June 2021, VentureBeat

provided by Google News

Amazon’s Elasticsearch fork OpenSearch hits prime time
13 July 2021, VentureBeat

AWS Elasticsearch fork exits beta, but legal battle rages on
14 July 2021, TechRadar

OpenSearch, the AWS-sponsored Elasticsearch fork, reaches 1.0 milestone
13 July 2021, The Register

How to deploy an Elasticsearch cluster on Ubuntu Server 20.04
15 July 2021, TechRepublic

OpenSearch 1.0: Amazon's Elasticsearch fork is ready
14 July 2021, Market Research Telecast

provided by Google News

On Point: Q&A with Lewis Shepherd | SIGNAL Magazine
1 June 2021, Signal Magazine

MongoDB Extends Cloud Lineup With New Database Release, Search And Mobile Tools
12 June 2020, CRN: Technology news for channel partners and solution providers

MongoDB Cloud brings developers and edge together
10 June 2020, TechRadar

MongoDB Cloud Gives Developers An Escape From Data Silos With First-Ever Unified Cloud-To-Mobile Experience
9 June 2020, PRNewswire

Realm Announces Realm .NET, Extending Support for Microsoft Developers to Build Next-Generation Responsive Applications
14 November 2017, Business Wire

provided by Google News

Facebook Open Sources MyRocks DB Engine And ZStandard Compression Algorithm
3 September 2016, Fossbytes

All 51 startups that debuted at Y Combinator W17 Demo Day 2
22 March 2017, TechCrunch

Alluxio Bolsters Data Orchestration for Hybrid Cloud World
11 July 2019, Datanami

Information Builders Bets on Kafka for Real-Time Analytics
7 June 2019, RTInsights

provided by Google News

Job opportunities

Director of Security and Operations
Meteor Development Group, San Francisco, CA

Growth Engineer
Invisibly, Missouri

Sr. Data Engineer
HBO Max, Culver City, CA

Staff Data Engineer (HBO Max)
HBO Max, Culver City, CA

Staff Software Engineer - Analytics Tools
Indeed, Remote

Full Stack Developer (Elasticsearch)
Macro Solutions, Arlington, VA

Elasticsearch Engineer
Leidos, Reston, VA

Front End Web Developer (PHP/MySQL)
Advanced Technologies Central, LLC, Los Angeles, CA

Machine Learning Engineer
Onclusive, Remote

Machine Learning Operations Engineer
Onclusive, Remote

Software Engineer - iOS
Lyft, New York, NY

Software Engineer - iOS
Lyft, Seattle, WA

Software Engineer - iOS
Lyft, San Francisco, CA

Database Adminstrator
TradingScreen, New York, NY

Software Engineer
DataDog, New York, NY

Software Engineer, AR Server Infrastructure
Niantic, Sunnyvale, CA

Staff Engineer -Storage
Samsung Semiconductor, Inc., San Jose, CA

Remote Senior Software Engineer, Low Latency Applications
Amobee, Baltimore, MD

jobs by Indeed



Share this page

Featured Products

Couchbase logo

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

Datastax Astra logo

Build cloud-native apps fast with Astra, the open-source, multi-cloud stack for
modern data apps.
Get started with 5 GB free..

Neo4j logo

See for yourself how a graph database can make your life easier.
Use Neo4j online for free.

MariaDB logo

SkySQL, the ultimate
MariaDB cloud, is here.

Get started with SkySQL today!

Vertica logo

The fastest unified analytical warehouse at extreme scale with in-database machine learning. Try Vertica for free with no time limit.

Present your product here