DBMS > Blueflood vs. GeoMesa vs. LokiJS

System Properties Comparison Blueflood vs. GeoMesa vs. LokiJS

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Editorial information provided by DB-Engines
Name	Blueflood  Xexclude from comparison	GeoMesa  Xexclude from comparison	LokiJS  Xexclude from comparison
Description	Scalable TimeSeries DBMS based on Cassandra	GeoMesa is a distributed spatio-temporal DBMS based on various systems as storage layer.	In-memory JavaScript DBMS
Primary database model	Time Series DBMS	Spatial DBMS	Document store
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.00 Rank #356   Overall #32   Time Series DBMS	Score 0.75 Rank #204   Overall #3   Spatial DBMS	Score 0.53 Rank #233   Overall #36   Document stores
Website	blueflood.io	www.geomesa.org	github.com/­techfort/­LokiJS
Technical documentation	github.com/­rackerlabs/­blueflood/­wiki	www.geomesa.org/­documentation/­stable/­user/­index.html	techfort.github.io/­LokiJS
Developer	Rackspace	CCRi and others
Initial release	2013	2014	2014
Current release		3.2.0, April 2021
License Commercial or Open Source	Open Source Apache 2.0	Open Source Apache License 2.0	Open Source
Cloud-based only Only available as a cloud service	no	no	no
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Implementation language	Java	Scala	JavaScript
Server operating systems	Linux OS X		server-less, requires a JavaScript environment (browser, Node.js)
Data scheme	predefined scheme	yes	schema-free
Typing predefined data types such as float or date	yes	yes	no
XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.	no	no	no
Secondary indexes	no	yes	yes via views
SQL Support of SQL	no	no	no
APIs and other access methods	HTTP REST		JavaScript API
Supported programming languages			JavaScript
Server-side scripts Stored procedures	no	no	View functions in JavaScript
Triggers	no	no	yes
Partitioning methods Methods for storing different data on different nodes	Sharding based on Cassandra	depending on storage layer	none
Replication methods Methods for redundantly storing data on multiple nodes	selectable replication factor based on Cassandra	depending on storage layer	none
MapReduce Offers an API for user-defined Map/Reduce methods	no	yes	yes
Consistency concepts Methods to ensure consistency in a distributed system	Eventual Consistency based on Cassandra Immediate Consistency based on Cassandra	depending on storage layer	none
Foreign keys Referential integrity	no	no	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	no	no	no atomic operations within a single collection possible
Concurrency Support for concurrent manipulation of data	yes	yes
Durability Support for making data persistent	yes	yes	yes Serialization of a DB in a Node.JS/Cordova/PhoneGap environment. Usage of the IndexedDB-API in a browser.
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	no	depending on storage layer	yes
User concepts Access control	no	yes depending on the DBMS used for storage	no
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	Blueflood	GeoMesa	LokiJS
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