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DBMS > Citus vs. Coveo vs. Memcached

System Properties Comparison Citus vs. Coveo vs. Memcached

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Editorial information provided by DB-Engines
NameCitus  Xexclude from comparisonCoveo  Xexclude from comparisonMemcached  Xexclude from comparison
DescriptionScalable hybrid operational and analytics RDBMS for big data use cases based on PostgreSQLAI-powered hosted search, recommendation and personalization platform providing tools for both low-code and full-code developmentIn-memory key-value store, originally intended for caching
Primary database modelRelational DBMSSearch engineKey-value store
Secondary database modelsDocument store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.66
Rank#122  Overall
#63  Relational DBMS
Score2.28
Rank#132  Overall
#12  Search engines
Score21.99
Rank#32  Overall
#4  Key-value stores
Websitewww.citusdata.comwww.coveo.comwww.memcached.org
Technical documentationdocs.citusdata.comdocs.coveo.comgithub.com/­memcached/­memcached/­wiki
DeveloperCoveoDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournal
Initial release201020122003
Current release8.1, December 20181.6.19, March 2023
License infoCommercial or Open SourceOpen Source infoAGPL, commercial license also availablecommercialOpen Source infoBSD license
Cloud-based only infoOnly available as a cloud servicenoyesno
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageCC
Server operating systemsLinuxhostedFreeBSD
Linux
OS X
Unix
Windows
Data schemeyeshybrid - fields need to be configured prior to indexing, but relationships can be exploited at query time without pre-configurationschema-free
Typing infopredefined data types such as float or dateyesyesno
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 infospecific XML type available, but no XML query functionalityno
Secondary indexesyesyesno
SQL infoSupport of SQLyes infostandard, with numerous extensionsnono
APIs and other access methodsADO.NET
JDBC
native C library
ODBC
streaming API for large objects
RESTful HTTP APIProprietary protocol
Supported programming languages.Net
C
C++
Delphi
Java
JavaScript (Node.js)
Perl
PHP
Python
Tcl
C#
Java
JavaScript
Python
.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
Server-side scripts infoStored proceduresuser defined functions inforealized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.nono
Triggersyesyesno
Partitioning methods infoMethods for storing different data on different nodesShardingyesnone
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replication infoother methods possible by using 3rd party extensionsyesnone infoRepcached, a Memcached patch, provides this functionallity
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integrityyesyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDyesno
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyesno
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.no
User concepts infoAccess controlfine grained access rights according to SQL-standardgranular access controls, API key management, content filtersyes infousing SASL (Simple Authentication and Security Layer) protocol

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More resources
CitusCoveoMemcached
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Recent citations in the news

Microsoft Announces PostgreSQL Option for Cosmos DB
12 October 2022, The New Stack

Citus For PostgreSQL Goes Fully Open Source
4 July 2022, iProgrammer

Google Makes Postgres-Compatible AlloyDB Generally Available
14 December 2022, The New Stack

Citus Data Announces Citus Cloud Database Support for HIPAA and ...
13 November 2018, Business Wire

Microsoft Expands Azure PostgreSQL Moxy Through Citus Data ...
30 January 2019, Data Center Knowledge

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30 March 2023, GlobeNewswire

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27 March 2023, GlobeNewswire

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20 March 2023, GlobeNewswire

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16 March 2023, GlobeNewswire

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16 March 2023, MakeUseOf

Intel Continues With More Big-Time Optimizations To The Linux Kernel
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27 August 2022, H2S Media

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