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DBMS > etcd vs. eXtremeDB vs. ScyllaDB vs. Weaviate

System Properties Comparison etcd vs. eXtremeDB vs. ScyllaDB vs. Weaviate

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Editorial information provided by DB-Engines
Nameetcd  Xexclude from comparisoneXtremeDB  Xexclude from comparisonScyllaDB  Xexclude from comparisonWeaviate  Xexclude from comparison
DescriptionA distributed reliable key-value storeNatively in-memory DBMS with options for persistency, high-availability and clusteringCassandra and DynamoDB compatible wide column storeA cloud-native, realtime vector search engine integrating scalable machine learning models
Primary database modelKey-value storeRelational DBMS
Time Series DBMS
Key-value store
Wide column store
Search engine
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score10.19
Rank#46  Overall
#5  Key-value stores
Score0.69
Rank#211  Overall
#105  Relational DBMS
#15  Time Series DBMS
Score3.70
Rank#90  Overall
#15  Key-value stores
#7  Wide column stores
Score0.18
Rank#292  Overall
#15  Search engines
Websiteetcd.io
github.com/­etcd-io/­etcd
www.mcobject.comwww.scylladb.comgithub.com/­semi-technologies/­weaviate
www.semi.technology/­solutions/­weaviate
Technical documentationetcd.io/­docs
github.com/­etcd-io/­etcd/­tree/­master/­Documentation
www.mcobject.com/­docs/­extremedb.htmdocs.scylladb.comwww.semi.technology/­developers/­weaviate/­current
DeveloperMcObjectScyllaDBSeMI Technologies B.V.
Initial release200120152017
Current release3.4, August 20198.2, November 2020Scylla Open Source 4.5, October 20211.0.3, January 2021
License infoCommercial or Open SourceOpen Source infoApache Version 2.0commercialOpen Source infoOpen Source (AGPL), commercial license availableOpen Source infocommercial license available with Weaviate Enterprise
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Scylla Cloud: Create real-time applications that run at global scale with Scylla Cloud, the industry’s most powerful NoSQL DBaaS
Implementation languageGoC and C++C++Go
Server operating systemsFreeBSD
Linux
Windows infoexperimental
AIX
HP-UX
Linux
macOS
Solaris
Windows
Linux
Data schemeschema-freeyesschema-freeyes, maps to GraphQL interface
Typing infopredefined data types such as float or datenoyesyesyes infostring, int, float, geo point, date, cross reference, fuzzy references
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 infosupport of XML interfaces availablenono
Secondary indexesnoyesyes infocluster global secondary indicesyes infoall data objects are indexed in a semantic vector space (the Contextionary), all primitive fields are indexed
SQL infoSupport of SQLnoyes infowith the option: eXtremeSQLSQL-like DML and DDL statements (CQL)GraphQL is used as query language
APIs and other access methodsgRPC
JSON over HTTP
.NET Client API
JDBC
JNI
ODBC
Proprietary protocol
RESTful HTTP API
Proprietary protocol (CQL) infocompatible with CQL (Cassandra Query Language, an SQL-like language)
RESTful HTTP API (DynamoDB compatible)
Thrift
GraphQL query language
RESTful HTTP/JSON API
Supported programming languages.Net
C
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Perl
PHP
Python
R
Ruby
Rust
Scala
Tcl
.Net
C
C#
C++
Java
Lua
Python
Scala
For CQL interface: C#, C++, Clojure, Erlang, Go, Haskell, Java, JavaScript, Node.js, Perl, PHP, Python, Ruby, Rust, Scala
For DynamoDB interface: .Net, ColdFusion, Erlang, Groovy, Java, JavaScript, Perl, PHP, Python, Ruby
Server-side scripts infoStored proceduresnoyesyes, Luano
Triggersyes, watching key changesyes infoby defining eventsnono
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioning / shardingShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesUsing Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.Active Replication Fabric™ for IoT
Multi-source replication infoby means of eXtremeDB Cluster option
Source-replica replication infoby means of eXtremeDB High Availability option
selectable replication factor infoRepresentation of geographical distribution of servers is possibleyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyEventual Consistency
Tunable Consistency infocan be individually decided for each write operation
Eventual Consistency
Foreign keys infoReferential integritynoyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDno infoAtomicity and isolation are supported for single operationsno
Concurrency infoSupport for concurrent manipulation of datayesyes infoOptimistic (MVCC) and pessimistic (locking) strategies availableyesyes
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.noyesyes infoin-memory tablesno
User concepts infoAccess controlnoAccess rights for users can be defined per objectOpenID Connect Discovery
More information provided by the system vendor
etcdeXtremeDBScyllaDBWeaviate
Specific characteristicseXtremeDB is an in-memory and/or persistent database system that offers an ultra-small...
» more
Scylla is a highly-available, highly-scalable, highly-performant NoSQL database....
» more
Competitive advantageseXtremeDB databases can be modeled relationally or as objects and can utilize SQL...
» more
Highly-performant (efficiently utilizes full resources of a node and network; millions...
» more
Typical application scenariosIoT application across all markets: Industrial Control, Netcom, Telecom, Defense,...
» more
AdTech ( AdGear , AppMonet , Dstillery , FullContact , MediaMath , Numberly , SAS...
» more
Key customersSchneider Electronics, F5 Networks, TNS, Boeing, Northrop Grumman, GoPro, ViaSat,...
» more
Comcast, Grab, OlaCabs, Yahoo! Japan, IMVU, Adgear, Xandr, Zenly, Natura, Snapfish,...
» more
Market metricsWith hundreds of customers and over 30 million devices/applications using the product...
» more
Licensing and pricing modelsFor server use cases, there is a simple per-server license irrespective of the number...
» more
Scylla Open Source - free open source software (AGPL) Scylla Enterprise - subscription-based...
» more
News

Weaviate in IEEE

Weaviate on DB-engines.com

Introduction & Demo video

FLOSS Weekly Podcast

FOSDEM 2020 video

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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
etcdeXtremeDBScyllaDBWeaviate
DB-Engines blog posts

Weaviate, an ANN Database with CRUD support
2 February 2021,  Etienne Dilocker, SeMI Technologies (sponsor) 

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Conferences and events

How Application-Level Priority Management Keeps Latency Low And Throughput High
Webinar, 10am PDT / 1pm EDT / 7pm CEST, 26 October 2021

Critical Attributes for a High-Performance, Low-Latency Database
Webinar, 10am PDT / 1pm EDT / 7pm CEST, 28 October 2021

Scylla University LIVE (Americas)
Instructor-led NoSQL database training / 9AM-1PM PT, 9 November 2021

Scylla University LIVE (EMEA and APAC)
Instructor-led NoSQL database training / 8AM-12AM UTC, 10 November 2021

Scylla Virtual Workshop
1pm GMT, 18 November 2021

Scylla Summit 2022
Virtual Conference, 9-10 February 2022

Finished events

P99 CONF - Cross-Industry Event on All Things P99
Virtual Conference, 6-7 October 2021 (finished)

Recent citations in the news

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provided by Google News

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21 October 2021, Exchange News Direct

insideBIGDATA Latest News – 10/20/2021
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McObject Collaborates with Wind River to Deliver First-Ever
14 September 2021, GlobeNewswire

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ScyllaDB Unveils 'Monstrous' New Capabilities for Its NoSQL
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ScyllaDB Announces Scylla Enterprise 2020 NoSQL Database
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Weaviate is an open-source search engine powered by ML, vectors, graphs, and GraphQL
7 April 2021, ZDNet

Getting Started with the Weaviate Vector Search Engine
18 May 2020, hackernoon.com

The History of the Weaviate Vector Search Engine
9 May 2020, hackernoon.com

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provided by Google News

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