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DBMS > KairosDB vs. Splunk vs. VelocityDB

System Properties Comparison KairosDB vs. Splunk vs. VelocityDB

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Editorial information provided by DB-Engines
NameKairosDB  Xexclude from comparisonSplunk  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionDistributed Time Series DBMS based on Cassandra or H2Analytics Platform for Big DataA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelTime Series DBMSSearch engineGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.69
Rank#238  Overall
#19  Time Series DBMS
Score89.68
Rank#14  Overall
#2  Search engines
Score0.08
Rank#362  Overall
#38  Graph DBMS
#15  Object oriented DBMS
Websitegithub.com/­kairosdb/­kairosdbwww.splunk.comvelocitydb.com
Technical documentationkairosdb.github.iodocs.splunk.com/­Documentation/­Splunkvelocitydb.com/­UserGuide
DeveloperSplunk Inc.VelocityDB Inc
Initial release201320032011
Current release1.2.2, November 20187.x
License infoCommercial or Open SourceOpen Source infoApache 2.0commercial infoLimited free edition and free developer edition availablecommercial
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaC#
Server operating systemsLinux
OS X
Windows
Linux
OS X
Solaris
Windows
Any that supports .NET
Data schemeschema-freeyesyes
Typing infopredefined data types such as float or dateyesyesyes
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.noyesno
Secondary indexesnoyesyes
SQL infoSupport of SQLnono infoSplunk Search Processing Language for search commandsno
APIs and other access methodsGraphite protocol
HTTP REST
Telnet API
HTTP REST.Net
Supported programming languagesJava
JavaScript infoNode.js
PHP
Python
C#
Java
JavaScript
PHP
Python
Ruby
.Net
Server-side scripts infoStored proceduresnoyesno
TriggersnoyesCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesSharding infobased on CassandraShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factor infobased on CassandraMulti-source replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency infobased on Cassandra
Immediate Consistency infobased on Cassandra
Eventual ConsistencyImmediate Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanono infoA 'Transaction' in Splunk has a different meaning: grouping related events into a single one for later searchingACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nonoyes
User concepts infoAccess controlsimple password-based access controlAccess rights for users and rolesBased on Windows Authentication

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More resources
KairosDBSplunkVelocityDB
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