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DBMS > Geode vs. TerarkDB vs. VelocityDB

System Properties Comparison Geode vs. TerarkDB vs. VelocityDB

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Editorial information provided by DB-Engines
NameGeode  Xexclude from comparisonTerarkDB  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionGeode is a distributed data container, pooling memory, CPU, network resources, and optionally local disk across multiple processesA key-value store forked from RocksDB with advanced compression algorithms. It can be used standalone or as a storage engine for MySQL and MongoDBA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelKey-value storeKey-value storeGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.59
Rank#135  Overall
#25  Key-value stores
Score0.02
Rank#341  Overall
#53  Key-value stores
Score0.10
Rank#310  Overall
#29  Graph DBMS
#17  Object oriented DBMS
Websitegeode.apache.orggithub.com/­Terark/­terarkdbvelocitydb.com
Technical documentationgeode.apache.org/­docsgithub.com/­Terark/­terarkdb/­wikivelocitydb.com/­UserGuide
DeveloperOriginally developed by Gemstone. They outsourced the project to Apache in 2015 but still deliver a commercial version as Gemfire.TerarkVelocityDB Inc
Initial release200220162011
Current release1.1, February 20177.x
License infoCommercial or Open SourceOpen Source infoApache Version 2; commercial licenses available as Gemfirecommercial inforestricted open source version availablecommercial
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaC++C#
Server operating systemsAll OS with a Java VM infothe JDK (8 or later) is also requiredAny that supports .NET
Data schemeschema-freeschema-freeyes
Typing infopredefined data types such as float or dateyesnoyes
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.nonono
Secondary indexesnonoyes
SQL infoSupport of SQLSQL-like query language (OQL)nono
APIs and other access methodsJava Client API
Memcached protocol
RESTful HTTP API
C++ API
Java API
.Net
Supported programming languages.Net
All JVM based languages
C++
Groovy
Java
Scala
C++
Java
.Net
Server-side scripts infoStored proceduresuser defined functionsnono
Triggersyes infoCache Event ListenersnoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesShardingnoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replicationnone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual ConsistencyImmediate Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datayes, on a single nodenoACID
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.yesyesyes
User concepts infoAccess controlAccess rights per client and object definablenoBased on Windows Authentication

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More resources
GeodeTerarkDBVelocityDB
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