DBMS > KeyDB vs. MySQL vs. Prometheus
System Properties Comparison KeyDB vs. MySQL vs. Prometheus
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|Editorial information provided by DB-Engines|
|Name||KeyDB Xexclude from comparison||MySQL Xexclude from comparison||Prometheus Xexclude from comparison|
|Description||An ultra-fast, open source Key-value store fully compatible with Redis API, modules, and protocols||Widely used open source RDBMS||Open-source TimeSeries DBMS and monitoring system|
|Primary database model||Key-value store||Relational DBMS Key/Value like access via memcached API||Time Series DBMS|
|Secondary database models||Document store|
|Developer||EQ Alpha Technology Ltd.||Oracle since 2010, originally MySQL AB, then Sun|
|Current release||8.0.33, April 2023|
|License Commercial or Open Source||Open Source BSD-3||Open Source GPL version 2. Commercial licenses with extended functionallity are available||Open Source Apache 2.0|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Implementation language||C++||C and C++||Go|
|Server operating systems||Linux||FreeBSD|
|Typing predefined data types such as float or date||partial Supported data types are strings, hashes, lists, sets and sorted sets, bit arrays, hyperloglogs and geospatial indexes||yes||Numeric data only|
|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||yes||no Import of XML data possible|
|Secondary indexes||yes by using the Redis Search module||yes||no|
|SQL Support of SQL||no||yes with proprietary extensions||no|
|APIs and other access methods||Proprietary protocol RESP - REdis Serialization Protoco||ADO.NET|
Proprietary native API
|RESTful HTTP/JSON API|
|Supported programming languages||C|
|Server-side scripts Stored procedures||Lua||yes proprietary syntax||no|
|Partitioning methods Methods for storing different data on different nodes||Sharding||horizontal partitioning, sharding with MySQL Cluster or MySQL Fabric||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||Multi-source replication|
|yes by Federation|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Eventual Consistency|
Strong eventual consistency with CRDTs
|Foreign keys Referential integrity||no||yes not for MyISAM storage engine||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||Optimistic locking, atomic execution of commands blocks and scripts||ACID not for MyISAM storage engine||no|
|Concurrency Support for concurrent manipulation of data||yes||yes table locks or row locks depending on storage engine||yes|
|Durability Support for making data persistent||yes Configurable mechanisms for persistency via snapshots and/or operations logs||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes||yes||no|
|User concepts Access control||simple password-based access control and ACL||Users with fine-grained authorization concept no user groups or roles||no|
More information provided by the system vendor
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