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DBMS > Kdb vs. LokiJS vs. OpenTSDB vs. Oracle Coherence

System Properties Comparison Kdb vs. LokiJS vs. OpenTSDB vs. Oracle Coherence

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Editorial information provided by DB-Engines
NameKdb  Xexclude from comparisonLokiJS  Xexclude from comparisonOpenTSDB  Xexclude from comparisonOracle Coherence  Xexclude from comparison
DescriptionHigh performance Time Series DBMSIn-memory JavaScript DBMSScalable Time Series DBMS based on HBaseOracles in-memory data grid solution
Primary database modelTime Series DBMS
Vector DBMS
Document storeTime Series DBMSKey-value store
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score7.71
Rank#49  Overall
#2  Time Series DBMS
#1  Vector DBMS
Score0.49
Rank#260  Overall
#42  Document stores
Score1.68
Rank#142  Overall
#12  Time Series DBMS
Score1.97
Rank#129  Overall
#22  Key-value stores
Websitekx.comgithub.com/­techfort/­LokiJSopentsdb.netwww.oracle.com/­java/­coherence
Technical documentationcode.kx.comtechfort.github.io/­LokiJSopentsdb.net/­docs/­build/­html/­index.htmldocs.oracle.com/­en/­middleware/­standalone/­coherence
DeveloperKx Systems, a division of First Derivatives plccurrently maintained by Yahoo and other contributorsOracle
Initial release2000 infokdb was released 2000, kdb+ in 2003201420112007
Current release3.6, May 201814.1, August 2023
License infoCommercial or Open Sourcecommercial infofree 32-bit versionOpen SourceOpen Source infoLGPLcommercial
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 languageqJavaScriptJavaJava
Server operating systemsLinux
OS X
Solaris
Windows
server-less, requires a JavaScript environment (browser, Node.js)Linux
Windows
All OS with a Java VM
Data schemeyesschema-freeschema-freeschema-free
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.yesnonono
Secondary indexesyes infotable attribute 'grouped'yes infovia viewsnono
SQL infoSupport of SQLSQL-like query language (q)nonono
APIs and other access methodsHTTP API
JDBC
Jupyter
Kafka
ODBC
WebSocket
JavaScript APIHTTP API
Telnet API
JCache
JPA
RESTful HTTP API
Supported programming languagesC
C#
C++
Go
J
Java
JavaScript
Lua
MatLab
Perl
PHP
Python
R
Scala
JavaScriptErlang
Go
Java
Python
R
Ruby
.Net
C++
Java
Server-side scripts infoStored proceduresuser defined functionsView functions in JavaScriptnono
Triggersyes infowith viewsyesnoyes infoLive Events
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioningnoneSharding infobased on HBaseSharding
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replicationnoneselectable replication factor infobased on HBaseyes, with selectable consistency level
MapReduce infoOffers an API for user-defined Map/Reduce methodsno infosimilar paradigm used for internal processingyesnono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencynoneImmediate Consistency infobased on HBaseEventual Consistency
Immediate Consistency
Foreign keys infoReferential integrityyesnonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanono infoatomic operations within a single collection possiblenoconfigurable
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyes infoSerialization of a DB in a Node.JS/Cordova/PhoneGap environment. Usage of the IndexedDB-API in a browser.yesyes infooptionally
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesnoyes
User concepts infoAccess controlrights management via user accountsnonoauthentification to access the cache via certificates or http basic authentication
More information provided by the system vendor
KdbLokiJSOpenTSDBOracle Coherence
Specific characteristicsIntegrated columnar database & programming system for streaming, real time and historical...
» more
Competitive advantagesprovides seamless scalability; runs on industry standard server platforms; is top-ranked...
» more
Typical application scenariostick database streaming sensor data massive intelligence applications oil and gas...
» more
Key customersGoldman Sachs Morgan Stanley Merrill Lynch J.P. Morgan Deutsche Bank IEX Securities...
» more
Market metricskdb+ performance and reliability proven by our customers in critical infrastructure...
» more
Licensing and pricing modelsupon request
» more

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More resources
KdbLokiJSOpenTSDBOracle Coherence
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