DBMS > KeyDB vs. Microsoft Azure Synapse Analytics vs. MySQL
System Properties Comparison KeyDB vs. Microsoft Azure Synapse Analytics vs. MySQL
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|Editorial information provided by DB-Engines|
|Name||KeyDB Xexclude from comparison||Microsoft Azure Synapse Analytics previously named Azure SQL Data Warehouse Xexclude from comparison||MySQL Xexclude from comparison|
|Description||An ultra-fast, open source Key-value store fully compatible with Redis API, modules, and protocols||Elastic, large scale data warehouse service leveraging the broad eco-system of SQL Server||Widely used open source RDBMS|
|Primary database model||Key-value store||Relational DBMS||Relational DBMS Key/Value like access via memcached API|
|Secondary database models||Document store|
|Developer||EQ Alpha Technology Ltd.||Microsoft||Oracle since 2010, originally MySQL AB, then Sun|
|Current release||8.0.29, April 2022|
|License Commercial or Open Source||Open Source BSD-3||commercial||Open Source GPL version 2. Commercial licenses with extended functionallity are available|
|Cloud-based only Only available as a cloud service||no||yes||no|
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|Implementation language||C++||C++||C and C++|
|Server operating systems||Linux||hosted||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||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.||no||no||yes|
|Secondary indexes||yes by using the Redis Search module||yes||yes|
|SQL Support of SQL||no||yes||yes with proprietary extensions|
|APIs and other access methods||Proprietary protocol RESP - REdis Serialization Protoco||ADO.NET|
Proprietary native API
|Supported programming languages||C|
|Server-side scripts Stored procedures||Lua||Transact SQL||yes proprietary syntax|
|Partitioning methods Methods for storing different data on different nodes||Sharding||Sharding, horizontal partitioning||horizontal partitioning, sharding with MySQL Cluster or MySQL Fabric|
|Replication methods Methods for redundantly storing data on multiple nodes||Multi-source replication|
|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
|Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||no||no docs.microsoft.com/en-us/azure/synapse-analytics/sql-data-warehouse/sql-data-warehouse-table-constraints||yes not for MyISAM storage engine|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||Optimistic locking, atomic execution of commands blocks and scripts||ACID||ACID not for MyISAM storage engine|
|Concurrency Support for concurrent manipulation of data||yes||yes||yes table locks or row locks depending on storage engine|
|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|
|User concepts Access control||simple password-based access control and ACL||yes||Users with fine-grained authorization concept no user groups or roles|
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|KeyDB||Microsoft Azure Synapse Analytics previously named Azure SQL Data Warehouse||MySQL|
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