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DBMS > AllegroGraph vs. NCache vs. PostgreSQL

System Properties Comparison AllegroGraph vs. NCache vs. PostgreSQL

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Editorial information provided by DB-Engines
NameAllegroGraph  Xexclude from comparisonNCache  Xexclude from comparisonPostgreSQL  Xexclude from comparison
DescriptionHigh performance, persistent RDF store with additional support for Graph DBMSNCache is a 100% .NET / .NET Core Open Source in-memory distributed cache.Widely used open source RDBMS infoDeveloped as objectoriented DBMS (Postgres), gradually enhanced with 'standards' like SQL
Primary database modelDocument store infowith version 6.5
Graph DBMS
RDF store
Key-value storeRelational DBMS infowith object oriented extensions, e.g.: user defined types/functions and inheritance. Handling of key/value pairs with hstore module.
Secondary database modelsDocument store
Search engine infoUsing distributed Lucene
Document store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.95
Rank#170  Overall
#26  Document stores
#14  Graph DBMS
#7  RDF stores
Score1.04
Rank#162  Overall
#29  Key-value stores
Score536.77
Rank#4  Overall
#4  Relational DBMS
Websiteallegrograph.comwww.alachisoft.com/­ncachewww.postgresql.org
Technical documentationfranz.com/­agraph/­support/­documentation/­current/­agraph-introduction.htmlwww.alachisoft.com/­resources/­docswww.postgresql.org/­docs/­manuals
DeveloperFranz Inc.AlachisoftPostgreSQL Global Development Group infowww.postgresql.org/­developer
Initial release200420051989 info1989: Postgres, 1996: PostgreSQL
Current release7.0.0, April 20205.0, May 201912.3, May 2020
License infoCommercial or Open Sourcecommercial infoLimited community edition freeOpen Source infoEnterprise Edition availableOpen Source infoBSD
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
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Implementation languageC#, .NET, .NET CoreC
Server operating systemsLinux
OS X
Windows
Linux
Windows
FreeBSD
HP-UX
Linux
NetBSD
OpenBSD
OS X
Solaris
Unix
Windows
Data schemeyes infoRDF schemasschema-freeyes
Typing infopredefined data types such as float or dateyespartial infoSupported data types are Lists, Queues, Hashsets, Dictionary and Counteryes
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.no infobulk load of XML files possiblenoyes infospecific XML-type available, but no XML query functionality.
Secondary indexesyesyesyes
SQL infoSupport of SQLSPARQL is used as query languageSQL-like query syntax and LINQ for searching the cache. Cache Synchronization with SQL Server using SQL dependency.yes infostandard with numerous extensions
APIs and other access methodsRESTful HTTP API
SPARQL
IDistributedCache
JCache
LINQ
Proprietary native API
ADO.NET
JDBC
native C library
ODBC
streaming API for large objects
Supported programming languagesC#
Clojure
Java
Lisp
Perl
Python
Ruby
Scala
.Net
.Net Core
C#
Java
Visual Basic.NET
.Net
C
C++
Delphi
Java infoJDBC
JavaScript (Node.js)
Perl
PHP
Python
Tcl
Server-side scripts infoStored proceduresyes infoJavaScript or Common Lispno infosupport for stored procedures with SQL-Server CLRuser defined functions inforealized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.
Triggersyesyes infoNotificationsyes
Partitioning methods infoMethods for storing different data on different nodeswith Federationyespartitioning by range, list and (since PostgreSQL 11) by hash
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication
Source-replica replication
yes, with selectable consistency levelSource-replica replication infoother methods possible by using 3rd party extensions
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency or Eventual Consistency depending on configurationEventual Consistency
Immediate Consistency
Strong Eventual Consistency over WAN with Conflict Resolution using Bridge Topology
Immediate Consistency
Foreign keys infoReferential integritynonoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDoptimistic locking and pessimistic lockingACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyesno
User concepts infoAccess controlUsers with fine-grained authorization concept, user roles and pluggable authenticationAuthentication to access the cache via Active Directory/LDAP (possible roles: user, administrator)fine grained access rights according to SQL-standard
More information provided by the system vendor
AllegroGraphNCachePostgreSQL
Specific characteristicsKnowledge Graph Platform Leader FedShard - Designed for Entity-Event Knowledge Graph...
» more
NCache has been the market leader in .NET Distributed Caching since 2005 . NCache...
» more
Competitive advantagesAllegroGraph is uniquely suited to support adhoc queries through SPARQL, Prolog and...
» more
NCache is 100% .NET/ .NET Core based which fully supports ASP.NET Core Sessions ,...
» more
Typical application scenariosNCache enables industries like retail, finance, banking IoT, travel, ecommerce, healthcare...
» more
Key customersBank of America, Citi, Natures Way, Charter Spectrum, Barclays, Henry Schein, GBM,...
» more
Market metricsMarket Leader in .NET Distributed Caching since 2005.
» more
Licensing and pricing modelsNCache Open Source is free on an as-is basis without any support. NCache Enterprise...
» more
News

Knowledge graphs enhance customer experience through speed and accuracy
10 July 2020

AllegroGraph Named to 100 Companies That Matter Most in Data
22 June 2020

Bloor Research Covers AllegroGraph with FedShard
5 June 2020

AllegroGraph Tutorial – Distributed Repository Using Shards and Federation Setup
25 May 2020

Advanced Knowledge Graph Visualization with New Gruff v8
12 May 2020

Basic CRUD Operations in NCache – As Easy as ABC
23 July 2020

Keep Cache Data Fresh Using Expiration in NCache
23 July 2020

How to Avoid Cache Full Scenario Using Eviction?
20 July 2020

SSL/TLS Configuration in NCache Made Simple
16 July 2020

Exploring Cache Environment Security in NCache
15 July 2020

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.

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We invite representatives of vendors of related products to contact us for presenting information about their offerings here.

More resources
AllegroGraphNCachePostgreSQL
DB-Engines blog posts

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Conferences and events

PostgreSQL Online Trainings
Online Training Courses, 4 May 2020 - 11 December 2020

Recent citations in the news

KMWorld AI 50: The Companies Empowering Intelligent Knowledge Management
7 July 2020, KMWorld Magazine

Ubiquitous AI Demands A New Type Of Database Sharding
1 May 2020, Forbes

AllegroGraph v7 Powers First Distributed Semantic Knowledge Graph Solution with Federated-Sharding
26 May 2020, Business Wire

Three Necessities For Maximizing Your Digital Twins Approach
4 November 2019, Forbes

Franz AllegroGraph 7 Provides Distributed Semantic Knowledge Graph Solution with Federated-Sharding
29 April 2020, Database Trends and Applications

provided by Google News

Custom Response Caching Using NCache in ASP.NET Core
22 April 2020, InfoQ.com

How to use NCache in ASP.Net Core
25 February 2019, InfoWorld

Alachisoft adopts 'Work from Home' model to stop spread of COVID-19
9 April 2020, UrduPoint News

NCache Distributed Cache for .NET Gets Open Sourced
28 January 2015, Visual Studio Magazine

Basic NCache is Now Open Source
10 March 2015, InfoQ.com

provided by Google News

Using logical replication to replicate managed Amazon RDS for PostgreSQL and Amazon Aurora to self-managed PostgreSQL
29 July 2020, idk.dev

EDB Growth Accelerates With 65 Percent Increase in Subscription Revenue; 4300 Registrations for Postgres Vision
31 July 2020, Business Wire

Crunchy Certified PostgreSQL 12 Achieves In Evaluation Status for Common Criteria Certification
21 July 2020, PRNewswire

PostgreSQL Multi-Model Graph Extension Announced
13 July 2020, iProgrammer

Understanding autovacuum in Amazon RDS for PostgreSQL environments
6 July 2020, idk.dev

provided by Google News

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