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DBMS > etcd vs. Graphite vs. PieCloudDB vs. VelocityDB

System Properties Comparison etcd vs. Graphite vs. PieCloudDB vs. VelocityDB

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Editorial information provided by DB-Engines
Nameetcd  Xexclude from comparisonGraphite  Xexclude from comparisonPieCloudDB  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionA distributed reliable key-value storeData logging and graphing tool for time series data infoThe storage layer (fixed size database) is called WhisperA cloud-native analytic database platform with new technologoy for elastic MPPA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelKey-value storeTime Series DBMSRelational DBMSGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score7.03
Rank#54  Overall
#5  Key-value stores
Score4.83
Rank#67  Overall
#4  Time Series DBMS
Score0.32
Rank#289  Overall
#133  Relational DBMS
Score0.11
Rank#354  Overall
#37  Graph DBMS
#16  Object oriented DBMS
Websiteetcd.io
github.com/­etcd-io/­etcd
github.com/­graphite-project/­graphite-webwww.openpie.comvelocitydb.com
Technical documentationetcd.io/­docs
github.com/­etcd-io/­etcd/­tree/­master/­Documentation
graphite.readthedocs.iovelocitydb.com/­UserGuide
DeveloperChris DavisOpenPieVelocityDB Inc
Initial release20062011
Current release3.4, August 20192.1, January 20237.x
License infoCommercial or Open SourceOpen Source infoApache Version 2.0Open Source infoApache 2.0commercialcommercial
Cloud-based only infoOnly available as a cloud servicenonoyesno
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageGoPythonC#
Server operating systemsFreeBSD
Linux
Windows infoexperimental
Linux
Unix
hostedAny that supports .NET
Data schemeschema-freeyesyesyes
Typing infopredefined data types such as float or datenoNumeric data onlyyesyes
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.nonono
Secondary indexesnonoyesyes
SQL infoSupport of SQLnonoyesno
APIs and other access methodsgRPC
JSON over HTTP
HTTP API
Sockets
CLI Client
JDBC
ODBC
.Net
Supported programming languages.Net
C
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Perl
PHP
Python
R
Ruby
Rust
Scala
Tcl
JavaScript (Node.js)
Python
Java
PL/SQL
Python
R
.Net
Server-side scripts infoStored proceduresnonouser defined functionsno
Triggersyes, watching key changesnonoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesnoneyesSharding
Replication methods infoMethods for redundantly storing data on multiple nodesUsing Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.noneyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencynoneImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanonoACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyes infolockingyesyes
Durability infoSupport for making data persistentyesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyes
User concepts infoAccess controlnonoUser Roles and pluggable authentication with full SQL StandardBased on Windows Authentication
More information provided by the system vendor
etcdGraphitePieCloudDBVelocityDB
Specific characteristicsPieCloudDB, OpenPie's flagship product, is a cutting-edge cloud-native data warehouse....
» more
Competitive advantagesExtreme Elastic: PieCloudDB utilizes a cutting-edge eMPP cloud-native architecture...
» more
Typical application scenariosPieCloudDB is ideal for Data mining applications that require extreme scalability...
» more
Key customersSail-Cloud China Shipbuilding Group Haizhou System Soochow Securities ​etc.,
» more
Licensing and pricing modelsPieCloudDB Community Edition: Community License, Free Download, Self-Hosted Deployment;...
» more

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and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

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More resources
etcdGraphitePieCloudDBVelocityDB
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