DBMS > AlaSQL vs. Blazegraph vs. Memcached vs. Yandex Database (YDB)

System Properties Comparison AlaSQL vs. Blazegraph vs. Memcached vs. Yandex Database (YDB)

Please select another system to include it in the comparison.

Editorial information provided by DB-Engines
Name	AlaSQL  Xexclude from comparison	Blazegraph  Xexclude from comparison	Memcached  Xexclude from comparison	Yandex Database (YDB)  Xexclude from comparison
		Amazon has acquired Blazegraph's domain and (probably) product. It is said that Amazon Neptune is based on Blazegraph.
Description	JavaScript DBMS library	High-performance graph database supporting Semantic Web (RDF/SPARQL) and Graph Database (tinkerpop3, blueprints, vertex-centric) APIs with scale-out and High Availability.	In-memory key-value store, originally intended for caching	A distributed fault-tolerant database service, with high availability, scalability, immediate consistency and ACID transactions and providing an Amazon DynamoDB compatible API
Primary database model	Document store Relational DBMS	Graph DBMS RDF store	Key-value store	Document store Relational DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.55 Rank #232   Overall #35   Document stores #111   Relational DBMS	Score 0.87 Rank #189   Overall #17   Graph DBMS #8   RDF stores	Score 24.56 Rank #33   Overall #4   Key-value stores	Score 0.53 Rank #235   Overall #36   Document stores #113   Relational DBMS
Website	alasql.org	blazegraph.com	www.memcached.org	cloud.yandex.com/­en/­services/­ydb github.com/­ydb-platform/­ydb ydb.tech
Technical documentation	github.com/­agershun/­alasql	wiki.blazegraph.com	github.com/­memcached/­memcached/­wiki	cloud.yandex.com/­en/­docs/­ydb ydb.tech/­en/­docs
Developer	Andrey Gershun & Mathias R. Wulff	Blazegraph	Danga Interactive originally developed by Brad Fitzpatrick for LiveJournal	Yandex
Initial release	2014	2006	2003	2019
Current release		2.1.5, March 2019	1.6.15, March 2022
License Commercial or Open Source	Open Source MIT-License	Open Source extended commercial license available	Open Source BSD license	Open Source Apache 2.0; commercial license available
Cloud-based only Only available as a cloud service	no	no	no	no
DBaaS offerings (sponsored links) Database as a Service Providers of DBaaS offerings, please contact us to be listed.
Implementation language	JavaScript	Java	C
Server operating systems	server-less, requires a JavaScript environment (browser, Node.js)	Linux OS X Windows	FreeBSD Linux OS X Unix Windows	Linux
Data scheme	schema-free	schema-free	schema-free	Flexible Schema (defined schema, partial schema, schema free)
Typing predefined data types such as float or date	no	yes RDF literal types	no	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			no
Secondary indexes	no	yes	no	yes
SQL Support of SQL	Close to SQL99, but no user access control, stored procedures and host language bindings.	SPARQL is used as query language	no	SQL-like query language (YQL)
APIs and other access methods	JavaScript API	Java API RESTful HTTP API SPARQL QUERY SPARQL UPDATE TinkerPop 3	Proprietary protocol	RESTful HTTP API (DynamoDB compatible)
Supported programming languages	JavaScript	.Net C C++ Java JavaScript PHP Python Ruby	.Net C C++ ColdFusion Erlang Java Lisp Lua OCaml Perl PHP Python Ruby	Go Java JavaScript (Node.js) PHP Python
Server-side scripts Stored procedures	no	yes	no	no
Triggers	yes	no	no
Partitioning methods Methods for storing different data on different nodes	none	Sharding	none	Sharding
Replication methods Methods for redundantly storing data on multiple nodes	none	yes	none Repcached, a Memcached patch, provides this functionallity	Active-passive shard replication
MapReduce Offers an API for user-defined Map/Reduce methods	no	no	no	no
Consistency concepts Methods to ensure consistency in a distributed system	none	Immediate Consistency or Eventual Consistency depending on configuration		Immediate Consistency
Foreign keys Referential integrity	yes	yes Relationships in Graphs	no	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	yes only for local storage and DOM-storage	ACID	no	ACID
Concurrency Support for concurrent manipulation of data		yes	yes	yes
Durability Support for making data persistent	yes by using IndexedDB, SQL.JS or proprietary FileStorage	yes	no	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	yes			no
User concepts Access control	no	Security and Authentication via Web Application Container (Tomcat, Jetty)	yes using SASL (Simple Authentication and Security Layer) protocol	Access rights defined for Yandex Cloud users
More information provided by the system vendor We invite representatives of system vendors to contact us for updating and extending the system information, and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.
Related products and services We invite representatives of vendors of related products to contact us for presenting information about their offerings here.
More resources
	AlaSQL	Blazegraph	Memcached	Yandex Database (YDB)
DB-Engines blog posts