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DBMS > Cloudflare Workers KV vs. IBM Cloudant vs. SwayDB vs. VelocityDB

System Properties Comparison Cloudflare Workers KV vs. IBM Cloudant vs. SwayDB vs. VelocityDB

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Editorial information provided by DB-Engines
NameCloudflare Workers KV  Xexclude from comparisonIBM Cloudant  Xexclude from comparisonSwayDB  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionA global, low-latency, key-value store for applications on Cloudflare with exceptionally high read volumes and low-latency.Database as a Service offering based on Apache CouchDBAn embeddable, non-blocking, type-safe key-value store for single or multiple disks and in-memory storageA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelKey-value storeDocument storeKey-value storeGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.39
Rank#278  Overall
#39  Key-value stores
Score2.73
Rank#108  Overall
#20  Document stores
Score0.04
Rank#373  Overall
#57  Key-value stores
Score0.11
Rank#347  Overall
#35  Graph DBMS
#15  Object oriented DBMS
Websitewww.cloudflare.com/­developer-platform/­workers-kvwww.ibm.com/­products/­cloudantswaydb.simer.auvelocitydb.com
Technical documentationdevelopers.cloudflare.com/­kv/­apicloud.ibm.com/­docs/­Cloudantvelocitydb.com/­UserGuide
DeveloperCloudflareIBM, Apache Software Foundation infoIBM acquired Cloudant in February 2014Simer PlahaVelocityDB Inc
Initial release2018201020182011
Current release7.x
License infoCommercial or Open SourcecommercialcommercialOpen Source infoGNU Affero GPL V3.0commercial
Cloud-based only infoOnly available as a cloud serviceyesyesnono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageErlangScalaC#
Server operating systemshostedhostedAny that supports .NET
Data schemeschema-freeschema-freeschema-freeyes
Typing infopredefined data types such as float or datenononoyes
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.nononono
Secondary indexesnoyesnoyes
SQL infoSupport of SQLnononono
APIs and other access methodsHTTP REST
Proprietary protocol
RESTful HTTP/JSON API.Net
Supported programming languagesC
C++
Dart
JavaScript
Kotlin
Python
Rust
Scala
C#
Java
JavaScript
Objective-C
PHP
Ruby
Java
Kotlin
Scala
.Net
Server-side scripts infoStored proceduresnoView functions (Map-Reduce) in JavaScriptnono
TriggersnoyesnoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesShardingnoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesyesMulti-source replication
Source-replica replication
none
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyesnono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual ConsistencyEventual ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanono infoatomic operations within a document possibleAtomic execution of operationsACID
Concurrency infoSupport for concurrent manipulation of datayesyes infoOptimistic lockingyesyes
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.nonoyesyes
User concepts infoAccess controlAccess rights for users can be defined per databasenoBased on Windows Authentication

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More resources
Cloudflare Workers KVIBM CloudantSwayDBVelocityDB
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