DBMS > LokiJS vs. Percona Server for MySQL vs. Sqrrl

System Properties Comparison LokiJS vs. Percona Server for MySQL vs. Sqrrl

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Editorial information provided by DB-Engines
Name	LokiJS  Xexclude from comparison	Percona Server for MySQL  Xexclude from comparison	Sqrrl  Xexclude from comparison
			Sqrrl has been acquired by Amazon and became a part of Amazon Web Services. It has been removed from the DB-Engines ranking.
Description	In-memory JavaScript DBMS	Enhanced drop-in replacement for MySQL based on XtraDB or TokuDB storage engines with improved performance and additional diagnostic and management features.	Adaptable, secure NoSQL built on Apache Accumulo
Primary database model	Document store	Relational DBMS	Document store Graph DBMS Key-value store Wide column store
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.57 Rank #226   Overall #34   Document stores	Score 2.59 Rank #113   Overall #58   Relational DBMS
Website	github.com/­techfort/­LokiJS	www.percona.com/­software/­mysql-database/­percona-server	sqrrl.com
Technical documentation	techfort.github.io/­LokiJS	www.percona.com/­downloads/­Percona-Server-LATEST
Developer		Percona	Amazon originally Sqrrl Data, Inc.
Initial release	2014	2008	2012
Current release		8.0.25-15, 2021
License Commercial or Open Source	Open Source	Open Source GPL version 2	commercial
Cloud-based only Only available as a cloud service	no	no	no
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Implementation language	JavaScript	C and C++	Java
Server operating systems	server-less, requires a JavaScript environment (browser, Node.js)	Linux	Linux
Data scheme	schema-free	yes	schema-free
Typing predefined data types such as float or date	no	yes	yes
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	yes
Secondary indexes	yes via views	yes	yes
SQL Support of SQL	no	yes	no
APIs and other access methods	JavaScript API	ADO.NET JDBC ODBC	Accumulo Shell Java API JDBC ODBC RESTful HTTP API Thrift
Supported programming languages	JavaScript	Ada C C# C++ D Eiffel Erlang Haskell Java Objective-C OCaml Perl PHP Python Ruby Scheme Tcl	Actionscript C using GLib C# C++ Cocoa Delphi Erlang Go Haskell Java JavaScript OCaml Perl PHP Python Ruby Smalltalk
Server-side scripts Stored procedures	View functions in JavaScript	yes	no
Triggers	yes	yes	no
Partitioning methods Methods for storing different data on different nodes	none		Sharding making use of Hadoop
Replication methods Methods for redundantly storing data on multiple nodes	none	Multi-source replication Source-replica replication XtraDB Cluster	selectable replication factor making use of Hadoop
MapReduce Offers an API for user-defined Map/Reduce methods	yes	no	yes
Consistency concepts Methods to ensure consistency in a distributed system	none	Immediate Consistency	Immediate Consistency Document store kept consistent with combination of global timestamping, row-level transactions, and server-side consistency resolution.
Foreign keys Referential integrity	no	yes	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	no atomic operations within a single collection possible	ACID	Atomic updates per row, document, or graph entity
Concurrency Support for concurrent manipulation of data		yes	yes
Durability Support for making data persistent	yes Serialization of a DB in a Node.JS/Cordova/PhoneGap environment. Usage of the IndexedDB-API in a browser.	yes	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	yes	yes
User concepts Access control	no	Users with fine-grained authorization concept no user groups or roles	Cell-level Security, Data-Centric Security, Role-Based Access Control (RBAC), Attribute-Based Access Control (ABAC)
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More resources
	LokiJS	Percona Server for MySQL	Sqrrl
DB-Engines blog posts	New kids on the block: database management systems implemented in JavaScript 1 December 2014, Matthias Gelbmann show all