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DBMS > Memcached vs. OpenQM vs. OrigoDB vs. TerminusDB vs. Titan

System Properties Comparison Memcached vs. OpenQM vs. OrigoDB vs. TerminusDB vs. Titan

Editorial information provided by DB-Engines
NameMemcached  Xexclude from comparisonOpenQM infoalso called QM  Xexclude from comparisonOrigoDB  Xexclude from comparisonTerminusDB infoformer name was DataChemist  Xexclude from comparisonTitan  Xexclude from comparison
Titan has been decommisioned after the takeover by Datastax. It will be removed from the DB-Engines ranking. A fork has been open-sourced as JanusGraph.
DescriptionIn-memory key-value store, originally intended for cachingQpenQM is a high-performance, self-tuning, multi-value DBMSA fully ACID in-memory object graph databaseScalable Graph Database platform making enterprise data available by exploiting inferred entities and relationshipsTitan is a Graph DBMS optimized for distributed clusters.
Primary database modelKey-value storeMultivalue DBMSDocument store
Object oriented DBMS
Graph DBMSGraph DBMS
Secondary database modelsDocument store
RDF store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score19.42
Rank#32  Overall
#4  Key-value stores
Score0.27
Rank#298  Overall
#10  Multivalue DBMS
Score0.00
Rank#383  Overall
#53  Document stores
#20  Object oriented DBMS
Score0.17
Rank#325  Overall
#29  Graph DBMS
Websitewww.memcached.orgwww.rocketsoftware.com/­products/­rocket-multivalue-application-development-platform/­rocket-open-qmorigodb.comterminusdb.comgithub.com/­thinkaurelius/­titan
Technical documentationgithub.com/­memcached/­memcached/­wikiorigodb.com/­docsterminusdb.github.io/­terminusdb/­#github.com/­thinkaurelius/­titan/­wiki
DeveloperDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalRocket Software, originally Martin PhillipsRobert Friberg et alDataChemist Ltd.Aurelius, owned by DataStax
Initial release200319932009 infounder the name LiveDB20182012
Current release1.6.25, March 20243.4-1211.0.0, January 2023
License infoCommercial or Open SourceOpen Source infoBSD licenseOpen Source infoGPLv2, extended commercial license availableOpen SourceOpen Source infoGPL V3Open Source infoApache license, version 2.0
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 languageCC#Prolog, RustJava
Server operating systemsFreeBSD
Linux
OS X
Unix
Windows
AIX
FreeBSD
Linux
macOS
Raspberry Pi
Solaris
Windows
Linux
Windows
LinuxLinux
OS X
Unix
Windows
Data schemeschema-freeyes infowith some exceptionsyesyesyes
Typing infopredefined data types such as float or datenoUser defined using .NET types and collectionsyesyes
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.yesno infocan be achieved using .NETno
Secondary indexesnoyesyesyes
SQL infoSupport of SQLnononoSQL-like query language (WOQL)no
APIs and other access methodsProprietary protocol.NET Client API
HTTP API
LINQ
OWL
RESTful HTTP API
WOQL (Web Object Query Language)
Java API
TinkerPop Blueprints
TinkerPop Frames
TinkerPop Gremlin
TinkerPop Rexster
Supported programming languages.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
.Net
Basic
C
Java
Objective C
PHP
Python
.NetJavaScript
Python
Clojure
Java
Python
Server-side scripts infoStored proceduresnoyesyesyesyes
Triggersnoyesyes infoDomain Eventsyesyes
Partitioning methods infoMethods for storing different data on different nodesnoneyeshorizontal partitioning infoclient side managed; servers are not synchronizedGraph Partitioningyes infovia pluggable storage backends
Replication methods infoMethods for redundantly storing data on multiple nodesnone infoRepcached, a Memcached patch, provides this functionallityyesSource-replica replicationJournaling Streamsyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonononoyes infovia Faunus, a graph analytics engine
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency
Immediate Consistency
Foreign keys infoReferential integritynonodepending on modelyesyes infoRelationships in graph
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDACIDACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyesyes
Durability infoSupport for making data persistentnoyesyes infoWrite ahead logyes infoin-memory journalingyes infoSupports various storage backends: Cassandra, HBase, Berkeley DB, Akiban, Hazelcast
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes
User concepts infoAccess controlyes infousing SASL (Simple Authentication and Security Layer) protocolAccess rights can be defined down to the item levelRole based authorizationRole-based access controlUser authentification and security via Rexster Graph Server

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More resources
MemcachedOpenQM infoalso called QMOrigoDBTerminusDB infoformer name was DataChemistTitan
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