DBMS > Atos Standard Common Repository vs. Ehcache vs. SpaceTime vs. VelocityDB

System Properties Comparison Atos Standard Common Repository vs. Ehcache vs. SpaceTime vs. VelocityDB

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Editorial information provided by DB-Engines
Name	Atos Standard Common Repository  Xexclude from comparison	Ehcache  Xexclude from comparison	SpaceTime  Xexclude from comparison	VelocityDB  Xexclude from comparison
	This system has been discontinued and will be removed from the DB-Engines ranking.
Description	Highly scalable database system, designed for managing session and subscriber data in modern mobile communication networks	A widely adopted Java cache with tiered storage options	SpaceTime is a spatio-temporal DBMS with a focus on performance.	A .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database model	Document store Key-value store	Key-value store	Spatial DBMS	Graph DBMS Object oriented DBMS
Secondary database models			Relational DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart		Score 4.64 Rank #68   Overall #8   Key-value stores	Score 0.03 Rank #392   Overall #8   Spatial DBMS	Score 0.11 Rank #354   Overall #37   Graph DBMS #15   Object oriented DBMS
Website	atos.net/en/convergence-creators/portfolio/standard-common-repository	www.ehcache.org	www.mireo.com/­spacetime	velocitydb.com
Technical documentation		www.ehcache.org/­documentation		velocitydb.com/­UserGuide
Developer	Atos Convergence Creators	Terracotta Inc, owned by Software AG	Mireo	VelocityDB Inc
Initial release	2016	2009	2020	2011
Current release	1703	3.10.0, March 2022		7.x
License Commercial or Open Source	commercial	Open Source Apache Version 2; commercial licenses available	commercial	commercial
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	Java	Java	C++	C#
Server operating systems	Linux	All OS with a Java VM	Linux	Any that supports .NET
Data scheme	Schema and schema-less with LDAP views	schema-free	yes	yes
Typing predefined data types such as float or date	optional	yes	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.	yes	no	no	no
Secondary indexes	yes	no	no	yes
SQL Support of SQL	no	no	A subset of ANSI SQL is implemented	no
APIs and other access methods	LDAP	JCache	RESTful HTTP API	.Net
Supported programming languages	All languages with LDAP bindings	Java	C# C++ Python	.Net
Server-side scripts Stored procedures	no	no	no	no
Triggers	yes	yes Cache Event Listeners	no	Callbacks are triggered when data changes
Partitioning methods Methods for storing different data on different nodes	Sharding cell division	Sharding by using Terracotta Server	Fixed-grid hypercubes	Sharding
Replication methods Methods for redundantly storing data on multiple nodes	yes	yes by using Terracotta Server	Real-time block device replication (DRBD)
MapReduce Offers an API for user-defined Map/Reduce methods		no	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Immediate Consistency or Eventual Consistency depending on configuration	Tunable Consistency (Strong, Eventual, Weak)	Immediate Consistency	Immediate Consistency
Foreign keys Referential integrity	no	no	no	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	Atomic execution of specific operations	yes supports JTA and can work as an XA resource	no	ACID
Concurrency Support for concurrent manipulation of data	yes	yes	yes	yes
Durability Support for making data persistent	yes	yes using a tiered cache-storage approach	yes	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	yes	yes	no	yes
User concepts Access control	LDAP bind authentication	no	yes	Based on Windows Authentication
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More resources
	Atos Standard Common Repository	Ehcache	SpaceTime	VelocityDB
Recent citations in the news	Infographic: What makes a Mobile Operator's setup future proof? 10 February 2024, Atos provided by Google News	Scaling Australia's Most Popular Online News Sites with Ehcache 6 December 2010, InfoQ.com Atlassian asks customers to patch critical Jira vulnerability 22 July 2021, BleepingComputer Critical Jira Flaw in Atlassian Could Lead to RCE 22 July 2021, Threatpost DZone Coding Java JBoss 5 to 7 in 11 steps 9 January 2014, DZone provided by Google News

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