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DBMS > Dragonfly vs. Ehcache vs. SAP Advantage Database Server vs. searchxml vs. VelocityDB

System Properties Comparison Dragonfly vs. Ehcache vs. SAP Advantage Database Server vs. searchxml vs. VelocityDB

Editorial information provided by DB-Engines
NameDragonfly  Xexclude from comparisonEhcache  Xexclude from comparisonSAP Advantage Database Server infoformer name: Sybase ADS  Xexclude from comparisonsearchxml  Xexclude from comparisonVelocityDB  Xexclude from comparison
SAP Advantage Database Server seems to be discontinued. Therefore it is excluded from the DB-Engines Ranking.
DescriptionA drop-in Redis replacement that scales vertically to support millions of operations per second and terabyte sized workloads, all on a single instanceA widely adopted Java cache with tiered storage optionsLow-cost RDBMS with access to ISAM and FoxPro data structuresDBMS for structured and unstructured content wrapped with an application serverA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelKey-value storeKey-value storeRelational DBMSNative XML DBMS
Search engine
Graph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.49
Rank#261  Overall
#38  Key-value stores
Score4.64
Rank#68  Overall
#8  Key-value stores
Score0.03
Rank#390  Overall
#7  Native XML DBMS
#24  Search engines
Score0.11
Rank#354  Overall
#37  Graph DBMS
#15  Object oriented DBMS
Websitegithub.com/­dragonflydb/­dragonfly
www.dragonflydb.io
www.ehcache.orgwww.sap.com/products/advantage-database-server.htmlwww.searchxml.net/­category/­productsvelocitydb.com
Technical documentationwww.dragonflydb.io/­docswww.ehcache.org/­documentationwww.searchxml.net/­support/­handoutsvelocitydb.com/­UserGuide
DeveloperDragonflyDB team and community contributorsTerracotta Inc, owned by Software AGSybase, SAPinformationpartners gmbhVelocityDB Inc
Initial release20232009199320152011
Current release1.0, March 20233.10.0, March 20221.07.x
License infoCommercial or Open SourceOpen Source infoBSL 1.1Open Source infoApache Version 2; commercial licenses availablecommercialcommercialcommercial
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageC++JavaC++C#
Server operating systemsLinuxAll OS with a Java VMLinux
Windows
WindowsAny that supports .NET
Data schemescheme-freeschema-freeyesschema-freeyes
Typing infopredefined data types such as float or datestrings, hashes, lists, sets, sorted sets, bit arraysyesyesyesyes
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.nononoyesno
Secondary indexesnonoyesyesyes
SQL infoSupport of SQLnonoyesnono
APIs and other access methodsProprietary protocol infoRESP - REdis Serialization ProtocolJCache.NET Client API
ADO.NET
JDBC
ODBC
OLE DB
RESTful HTTP API
WebDAV
XQuery
XSLT
.Net
Supported programming languagesC
C#
C++
Clojure
D
Dart
Elixir
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Lisp
Lua
Objective-C
Perl
PHP
Python
R
Ruby
Rust
Scala
Swift
Tcl
JavaDelphi
Perl
PHP
C++ infomost other programming languages supported via APIs.Net
Server-side scripts infoStored proceduresLuanoyesyes infoon the application serverno
Triggerspublish/subscribe channels provide some trigger functionalityyes infoCache Event ListenersyesnoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesSharding infoby using Terracotta ServernonenoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replicationyes infoby using Terracotta ServerMulti-source replication infoCONFLICT Trigger to resolve replication conflicts
Source-replica replication
yes infosychronisation to multiple collections
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonononono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual ConsistencyTunable Consistency (Strong, Eventual, Weak)Immediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynonoyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataAtomic execution of command blocks and scriptsyes infosupports JTA and can work as an XA resourceACIDmultiple readers, single writerACID
Concurrency infoSupport for concurrent manipulation of datayes, strict serializability by the serveryesyesyesyes
Durability infoSupport for making data persistentyesyes infousing a tiered cache-storage approachyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesno infocaching of (temporary) tables can be configurednoyes
User concepts infoAccess controlPassword-based authenticationnofine grained access rights according to SQL-standardDomain, group and role-based access control at the document level and for application servicesBased on Windows Authentication

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More resources
DragonflyEhcacheSAP Advantage Database Server infoformer name: Sybase ADSsearchxmlVelocityDB
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