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DBMS > Coveo vs. Memcached vs. OpenTSDB vs. OrientDB

System Properties Comparison Coveo vs. Memcached vs. OpenTSDB vs. OrientDB

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Editorial information provided by DB-Engines
NameCoveo  Xexclude from comparisonMemcached  Xexclude from comparisonOpenTSDB  Xexclude from comparisonOrientDB  Xexclude from comparison
DescriptionAI-powered hosted search, recommendation and personalization platform providing tools for both low-code and full-code developmentIn-memory key-value store, originally intended for cachingScalable Time Series DBMS based on HBaseMulti-model DBMS (Document, Graph, Key/Value)
Primary database modelSearch engineKey-value storeTime Series DBMSDocument store
Graph DBMS
Key-value store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.28
Rank#114  Overall
#11  Search engines
Score19.42
Rank#32  Overall
#4  Key-value stores
Score1.68
Rank#146  Overall
#12  Time Series DBMS
Score3.19
Rank#93  Overall
#16  Document stores
#7  Graph DBMS
#14  Key-value stores
Websitewww.coveo.comwww.memcached.orgopentsdb.netorientdb.org
Technical documentationdocs.coveo.comgithub.com/­memcached/­memcached/­wikiopentsdb.net/­docs/­build/­html/­index.htmlwww.orientdb.com/­docs/­last/­index.html
DeveloperCoveoDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalcurrently maintained by Yahoo and other contributorsOrientDB LTD; CallidusCloud; SAP
Initial release2012200320112010
Current release1.6.25, March 20243.2.29, March 2024
License infoCommercial or Open SourcecommercialOpen Source infoBSD licenseOpen Source infoLGPLOpen Source infoApache version 2
Cloud-based only infoOnly available as a cloud serviceyesnonono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageCJavaJava
Server operating systemshostedFreeBSD
Linux
OS X
Unix
Windows
Linux
Windows
All OS with a Java JDK (>= JDK 6)
Data schemehybrid - fields need to be configured prior to indexing, but relationships can be exploited at query time without pre-configurationschema-freeschema-freeschema-free infoSchema can be enforced for whole record ("schema-full") or for some fields only ("schema-hybrid")
Typing infopredefined data types such as float or dateyesnonumeric data for metrics, strings for tagsyes
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.nonono
Secondary indexesyesnonoyes
SQL infoSupport of SQLnononoSQL-like query language, no joins
APIs and other access methodsRESTful HTTP APIProprietary protocolHTTP API
Telnet API
Tinkerpop technology stack with Blueprints, Gremlin, Pipes
Java API
RESTful HTTP/JSON API
Supported programming languagesC#
Java
JavaScript
Python
.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
Erlang
Go
Java
Python
R
Ruby
.Net
C
C#
C++
Clojure
Java
JavaScript
JavaScript (Node.js)
PHP
Python
Ruby
Scala
Server-side scripts infoStored proceduresnononoJava, Javascript
TriggersyesnonoHooks
Partitioning methods infoMethods for storing different data on different nodesyesnoneSharding infobased on HBaseSharding
Replication methods infoMethods for redundantly storing data on multiple nodesyesnone infoRepcached, a Memcached patch, provides this functionallityselectable replication factor infobased on HBaseMulti-source replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono infocould be achieved with distributed queries
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency infobased on HBase
Foreign keys infoReferential integrityyesnonoyes inforelationship in graphs
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datayesnonoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesnoyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.no
User concepts infoAccess controlgranular access controls, API key management, content filtersyes infousing SASL (Simple Authentication and Security Layer) protocolnoAccess rights for users and roles; record level security configurable

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CoveoMemcachedOpenTSDBOrientDB
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