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DBMS > Memcached vs. OpenQM

System Properties Comparison Memcached vs. OpenQM

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Our visitors often compare Memcached and OpenQM with Aerospike, InfluxDB and Microsoft SQL Server.

Editorial information provided by DB-Engines
NameMemcached  Xexclude from comparisonOpenQM infoalso called QM  Xexclude from comparison
DescriptionIn-memory key-value store, originally intended for cachingQpenQM is a high-performance, self-tuning, multi-value DBMS
Primary database modelKey-value storeMultivalue DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score24.95
Rank#33  Overall
#4  Key-value stores
Score0.23
Rank#284  Overall
#10  Multivalue DBMS
Websitewww.memcached.orgwww.openqm.com
Technical documentationgithub.com/­memcached/­memcached/­wikiwww.openqm.com/­support/­documentation
DeveloperDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalMartin Phillips
Initial release20031993
Current release1.6.15, March 20223.4-12
License infoCommercial or Open SourceOpen Source infoBSD licenseOpen Source infoGPLv2, extended commercial license available
Cloud-based only infoOnly available as a cloud servicenono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC
Server operating systemsFreeBSD
Linux
OS X
Unix
Windows
AIX
FreeBSD
Linux
macOS
Raspberry Pi
Solaris
Windows
Data schemeschema-freeyes infowith some exceptions
Typing infopredefined data types such as float or dateno
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.yes
Secondary indexesnoyes
SQL infoSupport of SQLnono
APIs and other access methodsProprietary protocol
Supported programming languages.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
.Net
Basic
C
Java
Objective C
PHP
Python
Server-side scripts infoStored proceduresnoyes
Triggersnoyes
Partitioning methods infoMethods for storing different data on different nodesnoneyes
Replication methods infoMethods for redundantly storing data on multiple nodesnone infoRepcached, a Memcached patch, provides this functionallityyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency
Foreign keys infoReferential integritynono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACID
Concurrency infoSupport for concurrent manipulation of datayesyes
Durability infoSupport for making data persistentnoyes
User concepts infoAccess controlyes infousing SASL (Simple Authentication and Security Layer) protocolAccess rights can be defined down to the item level

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More resources
MemcachedOpenQM infoalso called QM
DB-Engines blog posts

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Recent citations in the news

How Pinterest Tuned Memcached for Big Performance Gains
16 May 2022, thenewstack.io

MGLRU Revved Once More For Promising Linux Performance Improvements
19 May 2022, Phoronix

Google Releases Memorystore for Memcached into General Availability
9 March 2021, InfoQ.com

How to benchmark your Ubuntu Linux servers with the Phoronix Test Suite
11 May 2022, TechRepublic

Google Cloud rolls out Memcached database caching – Blocks and Files
4 April 2020, Blocks and Files

provided by Google News

OpenQM
22 July 2019, International Spectrum Magazine

provided by Google News

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