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DBMS > Memcached vs. Postgres-XL vs. Splunk vs. ToroDB

System Properties Comparison Memcached vs. Postgres-XL vs. Splunk vs. ToroDB

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Editorial information provided by DB-Engines
NameMemcached  Xexclude from comparisonPostgres-XL  Xexclude from comparisonSplunk  Xexclude from comparisonToroDB  Xexclude from comparison
ToroDB seems to be discontinued. Therefore it is excluded from the DB-Engines Ranking.
DescriptionIn-memory key-value store, originally intended for cachingBased on PostgreSQL enhanced with MPP and write-scale-out cluster featuresAnalytics Platform for Big DataA MongoDB-compatible JSON document store, built on top of PostgreSQL
Primary database modelKey-value storeRelational DBMSSearch engineDocument store
Secondary database modelsDocument store
Spatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score19.42
Rank#32  Overall
#4  Key-value stores
Score0.49
Rank#256  Overall
#117  Relational DBMS
Score86.45
Rank#14  Overall
#2  Search engines
Websitewww.memcached.orgwww.postgres-xl.orgwww.splunk.comgithub.com/­torodb/­server
Technical documentationgithub.com/­memcached/­memcached/­wikiwww.postgres-xl.org/­documentationdocs.splunk.com/­Documentation/­Splunk
DeveloperDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalSplunk Inc.8Kdata
Initial release20032014 infosince 2012, originally named StormDB20032016
Current release1.6.25, March 202410 R1, October 2018
License infoCommercial or Open SourceOpen Source infoBSD licenseOpen Source infoMozilla public licensecommercial infoLimited free edition and free developer edition availableOpen Source infoAGPL-V3
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 languageCCJava
Server operating systemsFreeBSD
Linux
OS X
Unix
Windows
Linux
macOS
Linux
OS X
Solaris
Windows
All OS with a Java 7 VM
Data schemeschema-freeyesyesschema-free
Typing infopredefined data types such as float or datenoyesyesyes infostring, integer, double, boolean, date, object_id
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 infoXML type, but no XML query functionalityyesno
Secondary indexesnoyesyes
SQL infoSupport of SQLnoyes infodistributed, parallel query executionno infoSplunk Search Processing Language for search commands
APIs and other access methodsProprietary protocolADO.NET
JDBC
native C library
ODBC
streaming API for large objects
HTTP REST
Supported programming languages.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
.Net
C
C++
Delphi
Erlang
Java
JavaScript (Node.js)
Perl
PHP
Python
Tcl
C#
Java
JavaScript
PHP
Python
Ruby
Server-side scripts infoStored proceduresnouser defined functionsyes
Triggersnoyesyesno
Partitioning methods infoMethods for storing different data on different nodesnonehorizontal partitioningShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnone infoRepcached, a Memcached patch, provides this functionallityMulti-source replicationSource-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonoyes
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual ConsistencyEventual Consistency
Immediate Consistency
Foreign keys infoReferential integritynoyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACID infoMVCCno infoA 'Transaction' in Splunk has a different meaning: grouping related events into a single one for later searchingno
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
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.nono
User concepts infoAccess controlyes infousing SASL (Simple Authentication and Security Layer) protocolfine grained access rights according to SQL-standardAccess rights for users and rolesAccess rights for users and roles

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More resources
MemcachedPostgres-XLSplunkToroDB
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