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DBMS > Memcached vs. PouchDB vs. RDFox vs. Trafodion

System Properties Comparison Memcached vs. PouchDB vs. RDFox vs. Trafodion

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Editorial information provided by DB-Engines
NameMemcached  Xexclude from comparisonPouchDB  Xexclude from comparisonRDFox  Xexclude from comparisonTrafodion  Xexclude from comparison
Apache Trafodion has been retired in 2021. Therefore it is excluded from the DB-Engines Ranking.
DescriptionIn-memory key-value store, originally intended for cachingJavaScript DBMS with an API inspired by CouchDBHigh performance knowledge graph and semantic reasoning engineTransactional SQL-on-Hadoop DBMS
Primary database modelKey-value storeDocument storeGraph DBMS
RDF store
Relational DBMS
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score18.08
Rank#32  Overall
#4  Key-value stores
Score2.34
Rank#112  Overall
#21  Document stores
Score0.29
Rank#300  Overall
#24  Graph DBMS
#13  RDF stores
Websitewww.memcached.orgpouchdb.comwww.oxfordsemantic.techtrafodion.apache.org
Technical documentationgithub.com/­memcached/­memcached/­wikipouchdb.com/­guidesdocs.oxfordsemantic.techtrafodion.apache.org/­documentation.html
DeveloperDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalApache Software FoundationOxford Semantic TechnologiesApache Software Foundation, originally developed by HP
Initial release2003201220172014
Current release1.6.27, May 20247.1.1, June 20196.0, Septermber 20222.3.0, February 2019
License infoCommercial or Open SourceOpen Source infoBSD licenseOpen SourcecommercialOpen Source infoApache 2.0
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageCJavaScriptC++C++, Java
Server operating systemsFreeBSD
Linux
OS X
Unix
Windows
server-less, requires a JavaScript environment (browser, Node.js)Linux
macOS
Windows
Linux
Data schemeschema-freeschema-freeyes infoRDF schemasyes
Typing infopredefined data types such as float or datenonoyesyes
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 indexesnoyes infovia viewsyes
SQL infoSupport of SQLnononoyes
APIs and other access methodsProprietary protocolHTTP REST infoonly for PouchDB Server
JavaScript API
RESTful HTTP API
SPARQL 1.1
ADO.NET
JDBC
ODBC
Supported programming languages.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
JavaScriptC
Java
All languages supporting JDBC/ODBC/ADO.Net
Server-side scripts infoStored proceduresnoView functions in JavaScriptJava Stored Procedures
Triggersnoyesno
Partitioning methods infoMethods for storing different data on different nodesnoneSharding infowith a proxy-based framework, named couchdb-loungeSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnone infoRepcached, a Memcached patch, provides this functionallityMulti-source replication infoalso with CouchDB databases
Source-replica replication infoalso with CouchDB databases
replication via a shared file systemyes, via HBase
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyesyes infovia user defined functions and HBase
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual ConsistencyImmediate Consistency in stand-alone mode, Eventual Consistency in replicated setupsImmediate Consistency
Foreign keys infoReferential integritynonoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanonoACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyes
Durability infoSupport for making data persistentnoyes infoby using IndexedDB, WebSQL or LevelDB as backendyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesno
User concepts infoAccess controlyes infousing SASL (Simple Authentication and Security Layer) protocolnoRoles, resources, and access typesfine grained access rights according to SQL-standard

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More resources
MemcachedPouchDBRDFoxTrafodion
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