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DBMS > Dgraph vs. Memcached vs. XTDB

System Properties Comparison Dgraph vs. Memcached vs. XTDB

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Editorial information provided by DB-Engines
NameDgraph  Xexclude from comparisonMemcached  Xexclude from comparisonXTDB infoformerly named Crux  Xexclude from comparison
DescriptionDistributed and scalable native Graph DBMSIn-memory key-value store, originally intended for cachingA general purpose database with bitemporal SQL and Datalog and graph queries
Primary database modelGraph DBMSKey-value storeDocument store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.45
Rank#156  Overall
#15  Graph DBMS
Score19.42
Rank#32  Overall
#4  Key-value stores
Score0.11
Rank#343  Overall
#46  Document stores
Websitedgraph.iowww.memcached.orggithub.com/­xtdb/­xtdb
www.xtdb.com
Technical documentationdgraph.io/­docsgithub.com/­memcached/­memcached/­wikiwww.xtdb.com/­docs
DeveloperDgraph Labs, Inc.Danga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalJuxt Ltd.
Initial release201620032019
Current release1.6.25, March 20241.19, September 2021
License infoCommercial or Open SourceOpen Source infoApache 2.0Open Source infoBSD licenseOpen Source infoMIT License
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.
Implementation languageGoCClojure
Server operating systemsLinux
OS X
Windows
FreeBSD
Linux
OS X
Unix
Windows
All OS with a Java 8 (and higher) VM
Linux
Data schemeschema-freeschema-freeschema-free
Typing infopredefined data types such as float or dateyesnoyes, extensible-data-notation format
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.nono
Secondary indexesyesnoyes
SQL infoSupport of SQLnonolimited SQL, making use of Apache Calcite
APIs and other access methodsGraphQL query language
gRPC (using protocol buffers) API
HTTP API
Proprietary protocolHTTP REST
JDBC
Supported programming languagesC#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
Ruby
.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
Clojure
Java
Server-side scripts infoStored proceduresnonono
Triggersnonono
Partitioning methods infoMethods for storing different data on different nodesyesnonenone
Replication methods infoMethods for redundantly storing data on multiple nodesSynchronous replication via Raftnone infoRepcached, a Memcached patch, provides this functionallityyes, each node contains all data
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesnoyes, flexibel persistency by using storage technologies like Apache Kafka, RocksDB or LMDB
User concepts infoAccess controlno infoPlanned for future releasesyes infousing SASL (Simple Authentication and Security Layer) protocol

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More resources
DgraphMemcachedXTDB infoformerly named Crux
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Recent citations in the news

Dgraph on AWS: Setting up a horizontally scalable graph database | Amazon Web Services
1 September 2020, AWS Blog

Popular Open Source GraphQL Company Dgraph Secures $6M in Seed Round with New Leadership
20 July 2022, PR Newswire

Dgraph launches Slash GraphQL, a GraphQL-native database Backend-as-a-Service
10 September 2020, TechCrunch

Dgraph Rises to the Top Graph Database on GitHub With 11 G2 Badges and 11M Downloads
26 May 2021, Business Wire

Dgraph Raises $6M in Seed Funding
20 July 2022, FinSMEs

provided by Google News

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27 April 2024, Yahoo Singapore News

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15 March 2024, Infosecurity Magazine

Memcached DDoS: The biggest, baddest denial of service attacker yet
1 March 2018, ZDNet

Why Redis beats Memcached for caching
14 September 2017, InfoWorld

What are memcached servers, and why are they being used to launch record-setting DDoS attacks?
6 March 2018, GeekWire

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