DBMS > Apache Druid
Apache Druid System Properties
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|Editorial information provided by DB-Engines|
|Description||Open-source analytics data store designed for sub-second OLAP queries on high dimensionality and high cardinality data|
|Primary database model||Relational DBMS|
Time Series DBMS
|Developer||Apache Software Foundation and contributors|
|Current release||26.0.0, May 2023|
|License Commercial or Open Source||Open Source Apache license v2|
|Cloud-based only Only available as a cloud service||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||Linux|
|Data scheme||yes schema-less columns are supported|
|Typing predefined data types such as float or date||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|
|SQL Support of SQL||SQL for querying|
|APIs and other access methods||JDBC|
RESTful HTTP/JSON API
|Supported programming languages||Clojure|
|Server-side scripts Stored procedures||no|
|Partitioning methods Methods for storing different data on different nodes||Sharding manual/auto, time-based|
|Replication methods Methods for redundantly storing data on multiple nodes||yes, via HDFS, S3 or other storage engines|
|MapReduce Offers an API for user-defined Map/Reduce methods||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency|
|Foreign keys Referential integrity||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no|
|Concurrency Support for concurrent manipulation of data||yes|
|Durability Support for making data persistent||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no|
|User concepts Access control||RBAC using LDAP or Druid internals for users and groups for read/write by datasource and system|
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