DBMS > KairosDB vs. Memcached

System Properties Comparison KairosDB vs. Memcached

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Editorial information provided by DB-Engines
Name	KairosDB  Xexclude from comparison	Memcached  Xexclude from comparison
Description	Distributed Time Series DBMS based on Cassandra or H2	In-memory key-value store, originally intended for caching
Primary database model	Time Series DBMS	Key-value store
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.65 Rank #214   Overall #15   Time Series DBMS	Score 24.56 Rank #33   Overall #4   Key-value stores
Website	github.com/­kairosdb/­kairosdb	www.memcached.org
Technical documentation	kairosdb.github.io	github.com/­memcached/­memcached/­wiki
Developer		Danga Interactive originally developed by Brad Fitzpatrick for LiveJournal
Initial release	2013	2003
Current release	1.2.2, November 2018	1.6.15, March 2022
License Commercial or Open Source	Open Source Apache 2.0	Open Source BSD license
Cloud-based only Only available as a cloud service	no	no
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Implementation language	Java	C
Server operating systems	Linux OS X Windows	FreeBSD Linux OS X Unix Windows
Data scheme	schema-free	schema-free
Typing predefined data types such as float or date	yes	no
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.	no
Secondary indexes	no	no
SQL Support of SQL	no	no
APIs and other access methods	Graphite protocol HTTP REST Telnet API	Proprietary protocol
Supported programming languages	Java JavaScript Node.js PHP Python	.Net C C++ ColdFusion Erlang Java Lisp Lua OCaml Perl PHP Python Ruby
Server-side scripts Stored procedures	no	no
Triggers	no	no
Partitioning methods Methods for storing different data on different nodes	Sharding based on Cassandra	none
Replication methods Methods for redundantly storing data on multiple nodes	selectable replication factor based on Cassandra	none Repcached, a Memcached patch, provides this functionallity
MapReduce Offers an API for user-defined Map/Reduce methods	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Eventual Consistency based on Cassandra Immediate Consistency based on Cassandra
Foreign keys Referential integrity	no	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	no	no
Concurrency Support for concurrent manipulation of data	yes	yes
Durability Support for making data persistent	yes	no
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	no
User concepts Access control	simple password-based access control	yes using SASL (Simple Authentication and Security Layer) protocol
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	KairosDB	Memcached
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