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DBMS > Memcached vs. Sequoiadb vs. TDSQL for MySQL

System Properties Comparison Memcached vs. Sequoiadb vs. TDSQL for MySQL

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Editorial information provided by DB-Engines
NameMemcached  Xexclude from comparisonSequoiadb  Xexclude from comparisonTDSQL for MySQL  Xexclude from comparison
DescriptionIn-memory key-value store, originally intended for cachingNewSQL database with distributed OLTP and SQLA high-performance distributed database management system with features such as automatic sharding, intelligent operation and maintenance, elastic scalability without downtime, and enterprise-grade security. It is highly compatible with MySQL.
Primary database modelKey-value storeDocument store
Relational DBMS
Relational DBMS
Secondary database modelsDocument store
Spatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score20.74
Rank#32  Overall
#4  Key-value stores
Score0.48
Rank#260  Overall
#41  Document stores
#121  Relational DBMS
Score0.82
Rank#213  Overall
#97  Relational DBMS
Websitewww.memcached.orgwww.sequoiadb.comwww.tencentcloud.com/­products/­dcdb
Technical documentationgithub.com/­memcached/­memcached/­wikiwww.sequoiadb.com/­en/­index.php?m=Files&a=indexwww.tencentcloud.com/­document/­product/­1042
DeveloperDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalSequoiadb Ltd.Tencent
Initial release200320132013
Current release1.6.25, March 2024
License infoCommercial or Open SourceOpen Source infoBSD licenseOpen Source infoServer: AGPL; Client: Apache V2commercial
Cloud-based only infoOnly available as a cloud servicenonoyes
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageCC++
Server operating systemsFreeBSD
Linux
OS X
Unix
Windows
Linuxhosted
Data schemeschema-freeschema-freeyes
Typing infopredefined data types such as float or datenoyes 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 indexesnoyesyes
SQL infoSupport of SQLnoSQL-like query languageyes
APIs and other access methodsProprietary protocolproprietary protocol using JSONJDBC
ODBC
Supported programming languages.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
.Net
C++
Java
PHP
Python
C
C#
C++
Java
PHP
Python
Ruby
Server-side scripts infoStored proceduresnoJavaScriptyes
Triggersnonoyes
Partitioning methods infoMethods for storing different data on different nodesnoneShardingAutomatic sharding
Replication methods infoMethods for redundantly storing data on multiple nodesnone infoRepcached, a Memcached patch, provides this functionallitySource-replica replicationMulti-source replication
Source-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual ConsistencyImmediate Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoDocument is locked during a transactionACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentnoyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nono
User concepts infoAccess controlyes infousing SASL (Simple Authentication and Security Layer) protocolsimple password-based access controlUsers with fine-grained authorization concept

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More resources
MemcachedSequoiadbTDSQL for MySQL
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Memcached DDoS: The biggest, baddest denial of service attacker yet
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14 September 2017, InfoWorld

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