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DBMS > DataFS vs. Memcached vs. OpenTSDB

System Properties Comparison DataFS vs. Memcached vs. OpenTSDB

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Editorial information provided by DB-Engines
NameDataFS  Xexclude from comparisonMemcached  Xexclude from comparisonOpenTSDB  Xexclude from comparison
DescriptionAll data is stored inside objects which are linked by so-called link attributes. Objects consist of classes which can be extended and de-extended at runtime. Graphs can be defined with a struct.In-memory key-value store, originally intended for cachingScalable Time Series DBMS based on HBase
Primary database modelObject oriented DBMSKey-value storeTime Series DBMS
Secondary database modelsGraph DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.06
Rank#354  Overall
#15  Object oriented DBMS
Score19.42
Rank#32  Overall
#4  Key-value stores
Score1.68
Rank#146  Overall
#12  Time Series DBMS
Websitenewdatabase.comwww.memcached.orgopentsdb.net
Technical documentationdev.mobiland.com/­Overview.xspgithub.com/­memcached/­memcached/­wikiopentsdb.net/­docs/­build/­html/­index.html
DeveloperMobiland AGDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalcurrently maintained by Yahoo and other contributors
Initial release201820032011
Current release1.1.263, October 20221.6.27, May 2024
License infoCommercial or Open SourcecommercialOpen Source infoBSD licenseOpen Source infoLGPL
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageCJava
Server operating systemsWindowsFreeBSD
Linux
OS X
Unix
Windows
Linux
Windows
Data schemeClasses, Structs, and Lists are written in proprietary DataTypeDefinitionLanguage (.dtdl) and Objects consisting of those are written in proprietary DataAccessDefinitionLanguage (.dadl)schema-freeschema-free
Typing infopredefined data types such as float or dateyesnonumeric data for metrics, strings for tags
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 indexesnonono
SQL infoSupport of SQLnonono
APIs and other access methods.NET Client API
Proprietary client DLL
WinRT client
Proprietary protocolHTTP API
Telnet API
Supported programming languages.Net
C
C#
C++
VB.Net
.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
Erlang
Go
Java
Python
R
Ruby
Server-side scripts infoStored proceduresnono
Triggersno, except callback-events from server when changes happenednono
Partitioning methods infoMethods for storing different data on different nodesProprietary Sharding systemnoneSharding infobased on HBase
Replication methods infoMethods for redundantly storing data on multiple nodesnone infoRepcached, a Memcached patch, provides this functionallityselectable replication factor infobased on HBase
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency infobased on HBase
Foreign keys infoReferential integrityyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnono
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesnoyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nono
User concepts infoAccess controlWindows-Profileyes infousing SASL (Simple Authentication and Security Layer) protocolno

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More resources
DataFSMemcachedOpenTSDB
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