DBMS > Apache Druid vs. YDB
System Properties Comparison Apache Druid vs. YDB
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|Editorial information provided by DB-Engines|
|Name||Apache Druid Xexclude from comparison||YDB Xexclude from comparison|
|Description||Open-source analytics data store designed for sub-second OLAP queries on high dimensionality and high cardinality data||A distributed fault-tolerant database service, with high availability, scalability, immediate consistency and ACID transactions and providing an Amazon DynamoDB compatible API|
|Primary database model||Relational DBMS|
Time Series DBMS
|Developer||Apache Software Foundation and contributors||Yandex|
|Current release||28.0.0, November 2023|
|License Commercial or Open Source||Open Source Apache license v2||Open Source Apache 2.0; commercial license available|
|Cloud-based only Only available as a cloud service||no||no|
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|Server operating systems||Linux|
|Data scheme||yes schema-less columns are supported||Flexible Schema (defined schema, partial schema, schema free)|
|Typing predefined data types such as float or date||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|
|SQL Support of SQL||SQL for querying||SQL-like query language (YQL)|
|APIs and other access methods||JDBC|
RESTful HTTP/JSON API
|RESTful HTTP API (DynamoDB compatible)|
|Supported programming languages||Clojure|
|Server-side scripts Stored procedures||no||no|
|Partitioning methods Methods for storing different data on different nodes||Sharding manual/auto, time-based||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||yes, via HDFS, S3 or other storage engines||Active-passive shard replication|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes|
|Durability Support for making data persistent||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||no|
|User concepts Access control||RBAC using LDAP or Druid internals for users and groups for read/write by datasource and system||Access rights defined for Yandex Cloud users|
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