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DBMS > EJDB vs. EventStoreDB vs. KairosDB vs. TempoIQ

System Properties Comparison EJDB vs. EventStoreDB vs. KairosDB vs. TempoIQ

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Editorial information provided by DB-Engines
NameEJDB  Xexclude from comparisonEventStoreDB  Xexclude from comparisonKairosDB  Xexclude from comparisonTempoIQ infoformerly TempoDB  Xexclude from comparison
TempoIQ seems to be decommissioned. It will be removed from the DB-Engines ranking.
DescriptionEmbeddable document-store database library with JSON representation of queries (in MongoDB style)Industrial-strength, open-source database solution built from the ground up for event sourcing.Distributed Time Series DBMS based on Cassandra or H2Scalable analytics DBMS for sensor data, provided as a service (SaaS)
Primary database modelDocument storeEvent StoreTime Series DBMSTime Series DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.27
Rank#297  Overall
#44  Document stores
Score1.10
Rank#179  Overall
#1  Event Stores
Score0.62
Rank#239  Overall
#20  Time Series DBMS
Websitegithub.com/­Softmotions/­ejdbwww.eventstore.comgithub.com/­kairosdb/­kairosdbtempoiq.com (offline)
Technical documentationgithub.com/­Softmotions/­ejdb/­blob/­master/­README.mddevelopers.eventstore.comkairosdb.github.io
DeveloperSoftmotionsEvent Store LimitedTempoIQ
Initial release2012201220132012
Current release21.2, February 20211.2.2, November 2018
License infoCommercial or Open SourceOpen Source infoGPLv2Open SourceOpen Source infoApache 2.0commercial
Cloud-based only infoOnly available as a cloud servicenononoyes
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageCJava
Server operating systemsserver-lessLinux
Windows
Linux
OS X
Windows
Data schemeschema-freeschema-freeschema-free
Typing infopredefined data types such as float or dateyes infostring, integer, double, bool, date, object_idyesyes
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.nono
Secondary indexesnono
SQL infoSupport of SQLnonono
APIs and other access methodsin-process shared libraryGraphite protocol
HTTP REST
Telnet API
HTTP API
Supported programming languagesActionscript
C
C#
C++
Go
Java
JavaScript (Node.js)
Lua
Objective-C
Pike
Python
Ruby
Java
JavaScript infoNode.js
PHP
Python
C#
Java
JavaScript infoNode.js
Python
Ruby
Server-side scripts infoStored proceduresnonono
Triggersnonoyes infoRealtime Alerts
Partitioning methods infoMethods for storing different data on different nodesnoneSharding infobased on Cassandra
Replication methods infoMethods for redundantly storing data on multiple nodesnoneselectable replication factor infobased on Cassandra
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency infobased on Cassandra
Immediate Consistency infobased on Cassandra
Foreign keys infoReferential integrityno infotypically not needed, however similar functionality with collection joins possiblenono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanonono
Concurrency infoSupport for concurrent manipulation of datayes infoRead/Write Lockingyesyes
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.nono
User concepts infoAccess controlnosimple password-based access controlsimple authentication-based access control

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More resources
EJDBEventStoreDBKairosDBTempoIQ infoformerly TempoDB
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