DBMS > Citus vs. Geode vs. KairosDB
System Properties Comparison Citus vs. Geode vs. KairosDB
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|Editorial information provided by DB-Engines|
|Name||Citus Xexclude from comparison||Geode Xexclude from comparison||KairosDB Xexclude from comparison|
|Description||Scalable hybrid operational and analytics RDBMS for big data use cases based on PostgreSQL||Geode is a distributed data container, pooling memory, CPU, network resources, and optionally local disk across multiple processes||Distributed Time Series DBMS based on Cassandra or H2|
|Primary database model||Relational DBMS||Key-value store||Time Series DBMS|
|Secondary database models||Document store|
|Developer||Originally developed by Gemstone. They outsourced the project to Apache in 2015 but still deliver a commercial version as Gemfire.|
|Current release||8.1, December 2018||1.1, February 2017||1.2.2, November 2018|
|License Commercial or Open Source||Open Source AGPL, commercial license also available||Open Source Apache Version 2; commercial licenses available as Gemfire||Open Source Apache 2.0|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Server operating systems||Linux||All OS with a Java VM the JDK (8 or later) is also required||Linux|
|Typing predefined data types such as float or date||yes||yes||yes|
|XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.||yes specific XML type available, but no XML query functionality||no||no|
|SQL Support of SQL||yes standard, with numerous extensions||SQL-like query language (OQL)||no|
|APIs and other access methods||ADO.NET|
native C library
streaming API for large objects
|Java Client API|
RESTful HTTP API
|Supported programming languages||.Net|
All JVM based languages
|Server-side scripts Stored procedures||user defined functions realized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.||user defined functions||no|
|Triggers||yes||yes Cache Event Listeners||no|
|Partitioning methods Methods for storing different data on different nodes||Sharding||Sharding||Sharding based on Cassandra|
|Replication methods Methods for redundantly storing data on multiple nodes||Source-replica replication other methods possible by using 3rd party extensions||Multi-source replication||selectable replication factor based on Cassandra|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Eventual Consistency||Eventual Consistency based on Cassandra|
Immediate Consistency based on Cassandra
|Foreign keys Referential integrity||yes||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||yes, on a single node||no|
|Concurrency Support for concurrent manipulation of data||yes||yes||yes|
|Durability Support for making data persistent||yes||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||yes||no|
|User concepts Access control||fine grained access rights according to SQL-standard||Access rights per client and object definable||simple password-based access control|
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