DBMS > Elasticsearch vs. Solr vs. Splunk

System Properties Comparison Elasticsearch vs. Solr vs. Splunk

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Editorial information provided by DB-Engines

Name

Description

A distributed, RESTful modern search and analytics engine based on Apache Lucene info

Elasticsearch lets you perform and combine many types of searches such as structured, unstructured, geo, and metric

A widely used enterprise search engine based on Apache Lucene

Analytics Platform for Big Data

Primary database model

Search engine

Secondary database models

Document store

DB-Engines Ranking measures the popularity of database management systems
Trend Chart

Score	148.62
Rank	#7	Overall
	#1	Search engines

Score	60.80
Rank	#16	Overall
	#3	Search engines

Score	85.24
Rank	#13	Overall
	#2	Search engines

Website

www.elastic.co/products/elasticsearch

lucene.apache.org/solr

www.splunk.com

Technical documentation

www.elastic.co/guide/en/elasticsearch/reference/current/index.html

lucene.apache.org/solr/resources.html

docs.splunk.com/Documentation/Splunk

Developer

Elastic

Apache Software Foundation

Splunk Inc.

Initial release

2010

2004

2003

Current release

7.0.0, April 2019

8.0.0, March 2019

License

Commercial or Open Source

Open Source info

Apache Version 2; Elastic License

Open Source info

Apache Version 2

commercial info

Limited free edition and free developer edition available

Cloud-based only info

Only available as a cloud service

DBaaS offerings (sponsored links) info

Database 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 AWS and GCP that's powered by the creators of Elasticsearch.

Implementation language

Java

Server operating systems

All OS with a Java VM

All OS with a Java VM and a servlet container info

runs as a servlet in servlet container (e.g. Tomcat, Jetty is included)

Linux
OS X
Solaris
Windows

Data scheme

schema-free info

Flexible type definitions. Once a type is defined, it is persistent

yes

Dynamic Fields enables on-the-fly addition of new fields

yes

Typing

predefined data types such as float or date

yes

supports customizable data types and automatic typing

yes

XML support info

Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.

yes

Secondary indexes

yes

All search fields are automatically indexed

yes

All search fields are automatically indexed

yes

SQL

Support of SQL

SQL-like query language

supports limited query time joins

Splunk Search Processing Language for search commands

APIs and other access methods

Java API
RESTful HTTP/JSON API

Java API
RESTful HTTP API

HTTP REST

Supported programming languages

.Net
Groovy
Java
JavaScript
Perl
PHP
Python
Ruby
Community Contributed Clients

.Net
Erlang
Java
JavaScript
any language that supports sockets and either XML or JSON
Perl
PHP
Python
Ruby
Scala

C#
Java
JavaScript
PHP
Python
Ruby

Server-side scripts info

Stored procedures

yes

Java plugins

yes

Triggers

yes

by using the 'percolation' feature

yes

User configurable commands triggered on index changes

yes

Partitioning methods info

Methods for storing different data on different nodes

Sharding

Replication methods info

Methods for redundantly storing data on multiple nodes

yes

cloud/distributed (via Zookeeper)
Master-slave replication

Master-master replication

MapReduce

Offers an API for user-defined Map/Reduce methods

ES-Hadoop Connector

yes

Consistency concepts info

Methods to ensure consistency in a distributed system

Eventual Consistency info

Synchronous doc based replication. Get by ID may show delays up to 1 sec. Configurable write consistency: one, quorum, all

Eventual Consistency info

slaves poll the master in predefined intervalls

Eventual Consistency

Foreign keys info

Referential integrity

Transaction concepts info

Support to ensure data integrity after non-atomic manipulations of data

optimistic locking info

Solr 4

A 'Transaction' in Splunk has a different meaning: grouping related events into a single one for later searching

Concurrency info

Support for concurrent manipulation of data

yes

Durability info

Support for making data persistent

yes

In-memory capabilities info

Is there an option to define some or all structures to be held in-memory only.

Memcached and Redis integration

User concepts info

Access control

Access rights for users and roles

More information provided by the system vendor

Specific characteristics

Elasticsearch is a highly scalable open source full-text search and analytics engine....
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Competitive advantages

Open source, real-time index, search and analysis, horizontally scalable, distributed,...
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Typical application scenarios

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Key customers

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Market metrics

More than 250 million cumulative downloads More than 100,000 community members in...
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Licensing and pricing models

The Elastic Stack (Elasticsearch, Kibana, Beats, and Logstash) is free and open source...
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