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DBMS > LokiJS vs. openGemini vs. PouchDB vs. searchxml

System Properties Comparison LokiJS vs. openGemini vs. PouchDB vs. searchxml

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Editorial information provided by DB-Engines
NameLokiJS  Xexclude from comparisonopenGemini  Xexclude from comparisonPouchDB  Xexclude from comparisonsearchxml  Xexclude from comparison
DescriptionIn-memory JavaScript DBMSAn open source distributed Time Series DBMS with high concurrency, high performance, and high scalabilityJavaScript DBMS with an API inspired by CouchDBDBMS for structured and unstructured content wrapped with an application server
Primary database modelDocument storeTime Series DBMSDocument storeNative XML DBMS
Search engine
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.49
Rank#260  Overall
#42  Document stores
Score0.09
Rank#361  Overall
#37  Time Series DBMS
Score2.34
Rank#112  Overall
#21  Document stores
Score0.03
Rank#390  Overall
#7  Native XML DBMS
#24  Search engines
Websitegithub.com/­techfort/­LokiJSwww.opengemini.org
github.com/­openGemini
pouchdb.comwww.searchxml.net/­category/­products
Technical documentationtechfort.github.io/­LokiJSdocs.opengemini.org/­guidepouchdb.com/­guideswww.searchxml.net/­support/­handouts
DeveloperHuawei and openGemini communityApache Software Foundationinformationpartners gmbh
Initial release2014202220122015
Current release1.1, July 20237.1.1, June 20191.0
License infoCommercial or Open SourceOpen SourceOpen Source infoApache Version 2.0Open Sourcecommercial
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaScriptGoJavaScriptC++
Server operating systemsserver-less, requires a JavaScript environment (browser, Node.js)Linux
Windows
server-less, requires a JavaScript environment (browser, Node.js)Windows
Data schemeschema-freeschema-freeschema-freeschema-free
Typing infopredefined data types such as float or datenoInteger, Float, Boolean, Stringnoyes
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.nononoyes
Secondary indexesyes infovia viewsyesyes infovia viewsyes
SQL infoSupport of SQLnoSQL-like query languagenono
APIs and other access methodsJavaScript APIHTTP RESTHTTP REST infoonly for PouchDB Server
JavaScript API
RESTful HTTP API
WebDAV
XQuery
XSLT
Supported programming languagesJavaScriptC
C++
Go
Java
JavaScript (Node.js)
Python
Rust
JavaScriptC++ infomost other programming languages supported via APIs
Server-side scripts infoStored proceduresView functions in JavaScriptnoView functions in JavaScriptyes infoon the application server
Triggersyesnoyesno
Partitioning methods infoMethods for storing different data on different nodesnoneShardingSharding infowith a proxy-based framework, named couchdb-loungenone
Replication methods infoMethods for redundantly storing data on multiple nodesnoneyesMulti-source replication infoalso with CouchDB databases
Source-replica replication infoalso with CouchDB databases
yes infosychronisation to multiple collections
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemnoneEventual ConsistencyImmediate Consistency
Foreign keys infoReferential integritynononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoatomic operations within a single collection possiblenonomultiple readers, single writer
Concurrency infoSupport for concurrent manipulation of datayesyes
Durability infoSupport for making data persistentyes infoSerialization of a DB in a Node.JS/Cordova/PhoneGap environment. Usage of the IndexedDB-API in a browser.yesyes infoby using IndexedDB, WebSQL or LevelDB as backendyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesyesno
User concepts infoAccess controlnoAdministrators and common users accountsnoDomain, group and role-based access control at the document level and for application services

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More resources
LokiJSopenGeminiPouchDBsearchxml
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Recent citations in the news

LokiJS - A JavaScript Database
18 November 2014, iProgrammer

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About HUAWEI Open Source
9 February 2022, Huawei

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22 March 2017, ibm.com

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