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DBMS > EventStoreDB vs. HarperDB vs. KairosDB vs. Newts vs. Quasardb

System Properties Comparison EventStoreDB vs. HarperDB vs. KairosDB vs. Newts vs. Quasardb

Editorial information provided by DB-Engines
NameEventStoreDB  Xexclude from comparisonHarperDB  Xexclude from comparisonKairosDB  Xexclude from comparisonNewts  Xexclude from comparisonQuasardb  Xexclude from comparison
DescriptionIndustrial-strength, open-source database solution built from the ground up for event sourcing.Ultra-low latency distributed database with an intuitive REST API supporting NoSQL and SQL (including joins). Deployment of functions and databases simultaneously with a consolidated node-level architecture.Distributed Time Series DBMS based on Cassandra or H2Time Series DBMS based on CassandraDistributed, high-performance timeseries database
Primary database modelEvent StoreDocument storeTime Series DBMSTime Series DBMSTime Series DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.14
Rank#181  Overall
#1  Event Stores
Score0.55
Rank#252  Overall
#38  Document stores
Score0.71
Rank#230  Overall
#20  Time Series DBMS
Score0.00
Rank#396  Overall
#42  Time Series DBMS
Score0.19
Rank#327  Overall
#30  Time Series DBMS
Websitewww.eventstore.comwww.harperdb.iogithub.com/­kairosdb/­kairosdbopennms.github.io/­newtsquasar.ai
Technical documentationdevelopers.eventstore.comdocs.harperdb.io/­docskairosdb.github.iogithub.com/­OpenNMS/­newts/­wikidoc.quasar.ai/­master
DeveloperEvent Store LimitedHarperDBOpenNMS Groupquasardb
Initial release20122017201320142009
Current release21.2, February 20213.1, August 20211.2.2, November 20183.14.1, January 2024
License infoCommercial or Open SourceOpen Sourcecommercial infofree community edition availableOpen Source infoApache 2.0Open Source infoApache 2.0commercial infoFree community edition, Non-profit organizations and non-commercial usage are eligible for free licenses
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageNode.jsJavaJavaC++
Server operating systemsLinux
Windows
Linux
OS X
Linux
OS X
Windows
Linux
OS X
Windows
BSD
Linux
OS X
Windows
Data schemedynamic schemaschema-freeschema-freeschema-free
Typing infopredefined data types such as float or dateyes infoJSON data typesyesyesyes infointeger and binary
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 indexesyesnonoyes infowith tags
SQL infoSupport of SQLSQL-like data manipulation statementsnonoSQL-like query language
APIs and other access methodsJDBC
ODBC
React Hooks
RESTful HTTP/JSON API
WebSocket
Graphite protocol
HTTP REST
Telnet API
HTTP REST
Java API
HTTP API
Supported programming languages.Net
C
C#
C++
ColdFusion
D
Dart
Delphi
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Lisp
MatLab
Objective C
Perl
PHP
PowerShell
Prolog
Python
R
Ruby
Rust
Scala
Swift
Java
JavaScript infoNode.js
PHP
Python
Java.Net
C
C#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
R
Server-side scripts infoStored proceduresCustom Functions infosince release 3.1nonono
Triggersnononono
Partitioning methods infoMethods for storing different data on different nodesA table resides as a whole on one (or more) nodes in a clusterSharding infobased on CassandraSharding infobased on CassandraSharding infoconsistent hashing
Replication methods infoMethods for redundantly storing data on multiple nodesyes infothe nodes on which a table resides can be definedselectable replication factor infobased on Cassandraselectable replication factor infobased on CassandraSource-replica replication with selectable replication factor
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononowith Hadoop integration
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency infobased on Cassandra
Immediate Consistency infobased on Cassandra
Eventual Consistency infobased on Cassandra
Immediate Consistency infobased on Cassandra
Immediate Consistency
Foreign keys infoReferential integritynononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataAtomic execution of specific operationsnonoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyes, using LMDByesyesyes infoby using LevelDB
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesnonoyes infoTransient mode
User concepts infoAccess controlAccess rights for users and rolessimple password-based access controlnoCryptographically strong user authentication and audit trail

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More resources
EventStoreDBHarperDBKairosDBNewtsQuasardb
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