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DBMS > EJDB vs. Memcached vs. Prometheus vs. SAP Advantage Database Server vs. ToroDB

System Properties Comparison EJDB vs. Memcached vs. Prometheus vs. SAP Advantage Database Server vs. ToroDB

Editorial information provided by DB-Engines
NameEJDB  Xexclude from comparisonMemcached  Xexclude from comparisonPrometheus  Xexclude from comparisonSAP Advantage Database Server infoformer name: Sybase ADS  Xexclude from comparisonToroDB  Xexclude from comparison
SAP Advantage Database Server seems to be discontinued. Therefore it is excluded from the DB-Engines Ranking.ToroDB seems to be discontinued. Therefore it is excluded from the DB-Engines Ranking.
DescriptionEmbeddable document-store database library with JSON representation of queries (in MongoDB style)In-memory key-value store, originally intended for cachingOpen-source Time Series DBMS and monitoring systemLow-cost RDBMS with access to ISAM and FoxPro data structuresA MongoDB-compatible JSON document store, built on top of PostgreSQL
Primary database modelDocument storeKey-value storeTime Series DBMSRelational DBMSDocument store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.27
Rank#297  Overall
#44  Document stores
Score19.42
Rank#32  Overall
#4  Key-value stores
Score8.42
Rank#47  Overall
#2  Time Series DBMS
Websitegithub.com/­Softmotions/­ejdbwww.memcached.orgprometheus.iowww.sap.com/products/advantage-database-server.htmlgithub.com/­torodb/­server
Technical documentationgithub.com/­Softmotions/­ejdb/­blob/­master/­README.mdgithub.com/­memcached/­memcached/­wikiprometheus.io/­docs
DeveloperSoftmotionsDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalSybase, SAP8Kdata
Initial release20122003201519932016
Current release1.6.27, May 2024
License infoCommercial or Open SourceOpen Source infoGPLv2Open Source infoBSD licenseOpen Source infoApache 2.0commercialOpen Source infoAGPL-V3
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 languageCCGoJava
Server operating systemsserver-lessFreeBSD
Linux
OS X
Unix
Windows
Linux
Windows
Linux
Windows
All OS with a Java 7 VM
Data schemeschema-freeschema-freeyesyesschema-free
Typing infopredefined data types such as float or dateyes infostring, integer, double, bool, date, object_idnoNumeric data onlyyesyes infostring, integer, double, boolean, date, object_id
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 infoImport of XML data possiblenono
Secondary indexesnononoyes
SQL infoSupport of SQLnononoyes
APIs and other access methodsin-process shared libraryProprietary protocolRESTful HTTP/JSON API.NET Client API
ADO.NET
JDBC
ODBC
OLE DB
Supported programming languagesActionscript
C
C#
C++
Go
Java
JavaScript (Node.js)
Lua
Objective-C
Pike
Python
Ruby
.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
.Net
C++
Go
Haskell
Java
JavaScript (Node.js)
Python
Ruby
Delphi
Perl
PHP
Server-side scripts infoStored proceduresnononoyes
Triggersnononoyesno
Partitioning methods infoMethods for storing different data on different nodesnonenoneShardingnoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnonenone infoRepcached, a Memcached patch, provides this functionallityyes infoby FederationMulti-source replication infoCONFLICT Trigger to resolve replication conflicts
Source-replica replication
Source-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemnoneImmediate ConsistencyEventual Consistency
Immediate Consistency
Foreign keys infoReferential integrityno infotypically not needed, however similar functionality with collection joins possiblenonoyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanononoACIDno
Concurrency infoSupport for concurrent manipulation of datayes infoRead/Write Lockingyesyesyesyes
Durability infoSupport for making data persistentyesnoyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nono infocaching of (temporary) tables can be configured
User concepts infoAccess controlnoyes infousing SASL (Simple Authentication and Security Layer) protocolnofine grained access rights according to SQL-standardAccess rights for users and roles

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More resources
EJDBMemcachedPrometheusSAP Advantage Database Server infoformer name: Sybase ADSToroDB
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