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DBMS > GeoMesa vs. LokiJS vs. openGemini vs. VelocityDB

System Properties Comparison GeoMesa vs. LokiJS vs. openGemini vs. VelocityDB

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Editorial information provided by DB-Engines
NameGeoMesa  Xexclude from comparisonLokiJS  Xexclude from comparisonopenGemini  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionGeoMesa is a distributed spatio-temporal DBMS based on various systems as storage layer.In-memory JavaScript DBMSAn open source distributed Time Series DBMS with high concurrency, high performance, and high scalabilityA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelSpatial DBMSDocument storeTime Series DBMSGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.78
Rank#213  Overall
#4  Spatial DBMS
Score0.43
Rank#264  Overall
#42  Document stores
Score0.01
Rank#375  Overall
#39  Time Series DBMS
Score0.05
Rank#358  Overall
#36  Graph DBMS
#16  Object oriented DBMS
Websitewww.geomesa.orggithub.com/­techfort/­LokiJSwww.opengemini.org
github.com/­openGemini
velocitydb.com
Technical documentationwww.geomesa.org/­documentation/­stable/­user/­index.htmltechfort.github.io/­LokiJSdocs.opengemini.org/­guidevelocitydb.com/­UserGuide
DeveloperCCRi and othersHuawei and openGemini communityVelocityDB Inc
Initial release2014201420222011
Current release4.0.5, February 20241.1, July 20237.x
License infoCommercial or Open SourceOpen Source infoApache License 2.0Open SourceOpen Source infoApache Version 2.0commercial
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageScalaJavaScriptGoC#
Server operating systemsserver-less, requires a JavaScript environment (browser, Node.js)Linux
Windows
Any that supports .NET
Data schemeyesschema-freeschema-freeyes
Typing infopredefined data types such as float or dateyesnoInteger, Float, Boolean, Stringyes
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.nononono
Secondary indexesyesyes infovia viewsyesyes
SQL infoSupport of SQLnonoSQL-like query languageno
APIs and other access methodsJavaScript APIHTTP REST.Net
Supported programming languagesJavaScriptC
C++
Go
Java
JavaScript (Node.js)
Python
Rust
.Net
Server-side scripts infoStored proceduresnoView functions in JavaScriptnono
TriggersnoyesnoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesdepending on storage layernoneShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesdepending on storage layernoneyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesyesnono
Consistency concepts infoMethods to ensure consistency in a distributed systemdepending on storage layernoneImmediate Consistency
Foreign keys infoReferential integritynononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanono infoatomic operations within a single collection possiblenoACID
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
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.depending on storage layeryesyesyes
User concepts infoAccess controlyes infodepending on the DBMS used for storagenoAdministrators and common users accountsBased on Windows Authentication

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More resources
GeoMesaLokiJSopenGeminiVelocityDB
DB-Engines blog posts

Spatial database management systems
6 April 2021, Matthias Gelbmann

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New kids on the block: database management systems implemented in JavaScript
1 December 2014, Matthias Gelbmann

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Recent citations in the news

LokiJS - A JavaScript Database
18 November 2014, iProgrammer

provided by Google News

About HUAWEI Open Source
9 February 2022, huawei.com

provided by Google News



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