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DBMS > Hazelcast vs. OpenQM vs. StarRocks vs. VelocityDB

System Properties Comparison Hazelcast vs. OpenQM vs. StarRocks vs. VelocityDB

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Editorial information provided by DB-Engines
NameHazelcast  Xexclude from comparisonOpenQM infoalso called QM  Xexclude from comparisonStarRocks  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionA widely adopted in-memory data gridQpenQM is a high-performance, self-tuning, multi-value DBMSAn open source, high-performance columnar analytical database that enables real-time, multi-dimensional, and highly concurrent data analytics infoForked from Apache DorisA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelKey-value storeMultivalue DBMSRelational DBMSGraph DBMS
Object oriented DBMS
Secondary database modelsDocument store infoJSON support with IMDG 3.12
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score5.46
Rank#61  Overall
#7  Key-value stores
Score0.34
Rank#284  Overall
#10  Multivalue DBMS
Score0.93
Rank#198  Overall
#93  Relational DBMS
Score0.11
Rank#354  Overall
#37  Graph DBMS
#16  Object oriented DBMS
Websitehazelcast.comwww.rocketsoftware.com/­products/­rocket-multivalue-application-development-platform/­rocket-open-qmwww.starrocks.iovelocitydb.com
Technical documentationhazelcast.org/­imdg/­docsdocs.starrocks.io/­en-us/­latest/­introduction/­StarRocks_introvelocitydb.com/­UserGuide
DeveloperHazelcastRocket Software, originally Martin PhillipsThe Linux Foundation infosince Feb 2023VelocityDB Inc
Initial release2008199320202011
Current release5.3.6, November 20233.4-123.3, June 20247.x
License infoCommercial or Open SourceOpen Source infoApache Version 2; commercial licenses availableOpen Source infoGPLv2, extended commercial license availableOpen Source infoApache Version 2.0commercial
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaC++, JavaC#
Server operating systemsAll OS with a Java VMAIX
FreeBSD
Linux
macOS
Raspberry Pi
Solaris
Windows
LinuxAny that supports .NET
Data schemeschema-freeyes infowith some exceptionsyesyes
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.yes infothe object must implement a serialization strategyyesnono
Secondary indexesyesyesyesyes
SQL infoSupport of SQLSQL-like query languagenoyesno
APIs and other access methodsJCache
JPA
Memcached protocol
RESTful HTTP API
JDBC
MySQL protocol
.Net
Supported programming languages.Net
C#
C++
Clojure
Go
Java
JavaScript (Node.js)
Python
Scala
.Net
Basic
C
Java
Objective C
PHP
Python
Java.Net
Server-side scripts infoStored proceduresyes infoEvent Listeners, Executor Servicesyesuser defined functionsno
Triggersyes infoEventsyesnoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesShardingyeshorizontal partitioning (by range and hash)Sharding
Replication methods infoMethods for redundantly storing data on multiple nodesyes infoReplicated Mapyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency or Eventual Consistency selectable by user infoRaft Consensus AlgorithmImmediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataone or two-phase-commit; repeatable reads; read commitedACIDnoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
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.yesnoyes
User concepts infoAccess controlRole-based access controlAccess rights can be defined down to the item levelRole based access control and fine grained access rightsBased on Windows Authentication

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More resources
HazelcastOpenQM infoalso called QMStarRocksVelocityDB
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