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DBMS > Memcached vs. Realm vs. Sequoiadb vs. Valentina Server

System Properties Comparison Memcached vs. Realm vs. Sequoiadb vs. Valentina Server

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Editorial information provided by DB-Engines
NameMemcached  Xexclude from comparisonRealm  Xexclude from comparisonSequoiadb  Xexclude from comparisonValentina Server  Xexclude from comparison
DescriptionIn-memory key-value store, originally intended for cachingA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core DataNewSQL database with distributed OLTP and SQLObject-relational database and reports server
Primary database modelKey-value storeDocument storeDocument store
Relational DBMS
Relational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score20.74
Rank#32  Overall
#4  Key-value stores
Score7.71
Rank#52  Overall
#9  Document stores
Score0.48
Rank#260  Overall
#41  Document stores
#121  Relational DBMS
Score0.18
Rank#329  Overall
#144  Relational DBMS
Websitewww.memcached.orgrealm.iowww.sequoiadb.comwww.valentina-db.net
Technical documentationgithub.com/­memcached/­memcached/­wikirealm.io/­docswww.sequoiadb.com/­en/­index.php?m=Files&a=indexvalentina-db.com/­docs/­dokuwiki/­v5/­doku.php
DeveloperDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalRealm, acquired by MongoDB in May 2019Sequoiadb Ltd.Paradigma Software
Initial release2003201420131999
Current release1.6.25, March 20245.7.5
License infoCommercial or Open SourceOpen Source infoBSD licenseOpen SourceOpen Source infoServer: AGPL; Client: Apache V2commercial
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageCC++
Server operating systemsFreeBSD
Linux
OS X
Unix
Windows
Android
Backend: server-less
iOS
Windows
LinuxLinux
OS X
Windows
Data schemeschema-freeyesschema-freeyes
Typing infopredefined data types such as float or datenoyesyes infooid, date, timestamp, binary, regexyes
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 indexesnoyesyesyes
SQL infoSupport of SQLnonoSQL-like query languageyes
APIs and other access methodsProprietary protocolproprietary protocol using JSONODBC
Supported programming languages.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
.Net
Java infowith Android only
Objective-C
React Native
Swift
.Net
C++
Java
PHP
Python
.Net
C
C#
C++
Objective-C
PHP
Ruby
Visual Basic
Visual Basic.NET
Server-side scripts infoStored proceduresnono inforuns within the applications so server-side scripts are unnecessaryJavaScriptyes
Triggersnoyes infoChange Listenersnoyes
Partitioning methods infoMethods for storing different data on different nodesnonenoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnone infoRepcached, a Memcached patch, provides this functionallitynoneSource-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency
Foreign keys infoReferential integritynononoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDDocument is locked during a transaction
Concurrency infoSupport for concurrent manipulation of datayesyes
Durability infoSupport for making data persistentnoyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes infoIn-Memory realmnoyes
User concepts infoAccess controlyes infousing SASL (Simple Authentication and Security Layer) protocolyessimple password-based access controlfine grained access rights according to SQL-standard

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More resources
MemcachedRealmSequoiadbValentina Server
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