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DBMS > IBM Cloudant vs. Memcached vs. openGemini

System Properties Comparison IBM Cloudant vs. Memcached vs. openGemini

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Editorial information provided by DB-Engines
NameIBM Cloudant  Xexclude from comparisonMemcached  Xexclude from comparisonopenGemini  Xexclude from comparison
DescriptionDatabase as a Service offering based on Apache CouchDBIn-memory key-value store, originally intended for cachingAn open source distributed Time Series DBMS with high concurrency, high performance, and high scalability
Primary database modelDocument storeKey-value storeTime Series DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.68
Rank#106  Overall
#20  Document stores
Score19.42
Rank#32  Overall
#4  Key-value stores
Score0.01
Rank#375  Overall
#39  Time Series DBMS
Websitewww.ibm.com/­products/­cloudantwww.memcached.orgwww.opengemini.org
github.com/­openGemini
Technical documentationcloud.ibm.com/­docs/­Cloudantgithub.com/­memcached/­memcached/­wikidocs.opengemini.org/­guide
DeveloperIBM, Apache Software Foundation infoIBM acquired Cloudant in February 2014Danga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalHuawei and openGemini community
Initial release201020032022
Current release1.6.27, May 20241.1, July 2023
License infoCommercial or Open SourcecommercialOpen Source infoBSD licenseOpen Source infoApache Version 2.0
Cloud-based only infoOnly available as a cloud serviceyesnono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageErlangCGo
Server operating systemshostedFreeBSD
Linux
OS X
Unix
Windows
Linux
Windows
Data schemeschema-freeschema-freeschema-free
Typing infopredefined data types such as float or datenonoInteger, Float, Boolean, String
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 indexesyesnoyes
SQL infoSupport of SQLnonoSQL-like query language
APIs and other access methodsRESTful HTTP/JSON APIProprietary protocolHTTP REST
Supported programming languagesC#
Java
JavaScript
Objective-C
PHP
Ruby
.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
C
C++
Go
Java
JavaScript (Node.js)
Python
Rust
Server-side scripts infoStored proceduresView functions (Map-Reduce) in JavaScriptnono
Triggersyesnono
Partitioning methods infoMethods for storing different data on different nodesShardingnoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication
Source-replica replication
none infoRepcached, a Memcached patch, provides this functionallityyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoatomic operations within a document possiblenono
Concurrency infoSupport for concurrent manipulation of datayes infoOptimistic lockingyesyes
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.noyes
User concepts infoAccess controlAccess rights for users can be defined per databaseyes infousing SASL (Simple Authentication and Security Layer) protocolAdministrators and common users accounts

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More resources
IBM CloudantMemcachedopenGemini
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