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DBMS > atoti vs. HarperDB vs. LokiJS

System Properties Comparison atoti vs. HarperDB vs. LokiJS

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Editorial information provided by DB-Engines
Nameatoti  Xexclude from comparisonHarperDB  Xexclude from comparisonLokiJS  Xexclude from comparison
DescriptionAn in-memory DBMS combining transactional and analytical processing to handle the aggregation of ever-changing data.Ultra-low latency distributed database with an intuitive REST API supporting NoSQL and SQL (including joins). Deployment of functions and databases simultaneously with a consolidated node-level architecture.In-memory JavaScript DBMS
Primary database modelObject oriented DBMSDocument storeDocument store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.56
Rank#245  Overall
#10  Object oriented DBMS
Score0.55
Rank#248  Overall
#38  Document stores
Score0.43
Rank#264  Overall
#42  Document stores
Websiteatoti.iowww.harperdb.iogithub.com/­techfort/­LokiJS
Technical documentationdocs.atoti.iodocs.harperdb.io/­docstechfort.github.io/­LokiJS
DeveloperActiveViamHarperDB
Initial release20172014
Current release3.1, August 2021
License infoCommercial or Open Sourcecommercial infofree versions availablecommercial infofree community edition availableOpen Source
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaNode.jsJavaScript
Server operating systemsLinux
OS X
server-less, requires a JavaScript environment (browser, Node.js)
Data schemedynamic schemaschema-free
Typing infopredefined data types such as float or dateyes infoJSON data typesno
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.nono
Secondary indexesyesyes infovia views
SQL infoSupport of SQLMultidimensional Expressions (MDX)SQL-like data manipulation statementsno
APIs and other access methodsJDBC
ODBC
React Hooks
RESTful HTTP/JSON API
WebSocket
JavaScript API
Supported programming languages.Net
C
C#
C++
ColdFusion
D
Dart
Delphi
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Lisp
MatLab
Objective C
Perl
PHP
PowerShell
Prolog
Python
R
Ruby
Rust
Scala
Swift
JavaScript
Server-side scripts infoStored proceduresPythonCustom Functions infosince release 3.1View functions in JavaScript
Triggersnoyes
Partitioning methods infoMethods for storing different data on different nodesSharding, horizontal partitioningA table resides as a whole on one (or more) nodes in a clusternone
Replication methods infoMethods for redundantly storing data on multiple nodesyes infothe nodes on which a table resides can be definednone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonoyes
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistencynone
Foreign keys infoReferential integritynono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataAtomic execution of specific operationsno infoatomic operations within a single collection possible
Concurrency infoSupport for concurrent manipulation of datayes, multi-version concurrency control (MVCC)yes
Durability infoSupport for making data persistentyes, using LMDByes infoSerialization of a DB in a Node.JS/Cordova/PhoneGap environment. Usage of the IndexedDB-API in a browser.
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesyes
User concepts infoAccess controlAccess rights for users and rolesno

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More resources
atotiHarperDBLokiJS
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