1. [Home](https://www.g2.com/) 2. ... 3. [Time Series Databases](https://www.g2.com/categories/time-series-databases) 4. [Druid Discussions](https://www.g2.com/products/druid/discuss) [ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_eb5a3f53f09daab3e54a6f0ac5e8b90d/druid.png "Product Avatar Image") ](/products/druid/reviews) [ Druid ](/products/druid/reviews) (31)4.3/5 Apache Druid is an open source real-time analytics database. Druid combines ideas from OLAP/analytic databases, timeseries databases, and search systems to create a complete real-time analytics solution for real-time data. It includes stream and batch ingestion, column-oriented storage, time-optimized partitioning, native OLAP and search indexing, SQL and REST support, flexible schemas; all with true horizontal scalability on a shared nothing, cloud native architecture that makes it easy to deploy, monitor and manage at scale. It is downloadable for free for unlimited use from druid.apache.org and also hosted in the cloud by Imply Data. Show More * * * ### 39.0 Nps Score Already have Druid? ### All Druid Discussions Search Most CommentedMost HelpfulPinned by G2Newest All DiscussionsDiscussions with CommentsPinned by G2Discussions without Comments FilterFilter Filter byExpand/Collapse Sort by Most Commented Most Helpful Pinned by G2 Newest Filter by All Discussions Discussions with Comments Pinned by G2 Discussions without Comments ![Pinned by G2 as a common question](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Pinned by G2 as a common question") G2 Pinned by G2 as a common question • over 2 years ago More Options - [ # What is Druid used for? ](/discussions/what-is-druid-used-for) What is Druid used for? [ Real-time Analytic Database Software ](https://www.g2.com/tags/real-time-analytic-database-software)[ Time Series Databases ](https://www.g2.com/tags/time-series-databases)[ Columnar Databases ](https://www.g2.com/tags/columnar-databases)[ Relational Databases ](https://www.g2.com/tags/relational-databases) [ Data Warehouse Solutions ](https://www.g2.com/tags/data-warehouse-solutions)[ Big Data Processing And Distribution Systems ](https://www.g2.com/tags/big-data-processing-and-distribution-systems) Show More * * * \<0\>0\>Upvotes 0 * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+Druid+questions+and+get+answers+from+expert+users+in+our+Druid+Discussions+section.&title=Druid+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=Druid+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=Druid+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss%0aAsk+Druid+questions+and+get+answers+from+expert+users+in+our+Druid+Discussions+section.) 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[ Time Series Databases ](https://www.g2.com/tags/time-series-databases)[ Columnar Databases ](https://www.g2.com/tags/columnar-databases)[ Relational Databases ](https://www.g2.com/tags/relational-databases)[ Data Warehouse Software ](https://www.g2.com/tags/data-warehouse-software) [ Big Data Processing And Distribution Systems ](https://www.g2.com/tags/big-data-processing-and-distribution-systems) Show More * * * \<0\>0\>Upvotes 0 * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+Druid+questions+and+get+answers+from+expert+users+in+our+Druid+Discussions+section.&title=Druid+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=Druid+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=Druid+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss%0aAsk+Druid+questions+and+get+answers+from+expert+users+in+our+Druid+Discussions+section.) 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[ Time Series Databases ](https://www.g2.com/tags/time-series-databases)[ Columnar Databases ](https://www.g2.com/tags/columnar-databases)[ Relational Databases ](https://www.g2.com/tags/relational-databases)[ Data Warehouse Software ](https://www.g2.com/tags/data-warehouse-software) [ Big Data Processing And Distribution Systems ](https://www.g2.com/tags/big-data-processing-and-distribution-systems) Show More * * * \<0\>0\>Upvotes 0 * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+Druid+questions+and+get+answers+from+expert+users+in+our+Druid+Discussions+section.&title=Druid+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=Druid+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=Druid+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss%0aAsk+Druid+questions+and+get+answers+from+expert+users+in+our+Druid+Discussions+section.) 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[ Time Series Databases ](https://www.g2.com/tags/time-series-databases)[ Columnar Databases ](https://www.g2.com/tags/columnar-databases)[ Relational Databases ](https://www.g2.com/tags/relational-databases)[ Data Warehouse Software ](https://www.g2.com/tags/data-warehouse-software) [ Big Data Processing And Distribution Systems ](https://www.g2.com/tags/big-data-processing-and-distribution-systems) Show More * * * \<0\>0\>Upvotes 0 * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+Druid+questions+and+get+answers+from+expert+users+in+our+Druid+Discussions+section.&title=Druid+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=Druid+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=Druid+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss%0aAsk+Druid+questions+and+get+answers+from+expert+users+in+our+Druid+Discussions+section.) 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[ Columnar Databases ](https://www.g2.com/tags/columnar-databases)[ Big Data Processing And Distribution Systems ](https://www.g2.com/tags/big-data-processing-and-distribution-systems)[ Data Warehouse Software ](https://www.g2.com/tags/data-warehouse-software)[ Relational Databases ](https://www.g2.com/tags/relational-databases) [ Time Series Databases ](https://www.g2.com/tags/time-series-databases) Show More * * * \<0\>0\>Upvotes 0 * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+Druid+questions+and+get+answers+from+expert+users+in+our+Druid+Discussions+section.&title=Druid+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=Druid+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=Druid+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss%0aAsk+Druid+questions+and+get+answers+from+expert+users+in+our+Druid+Discussions+section.) [![mail](/assets/social-logos/mail-d55c53b04bf49872e40cd2443b85a99caa23394e6cf154ae32a9d08377c15d86.svg "mail")](mailto:?subject=Druid+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss%0aAsk+Druid+questions+and+get+answers+from+expert+users+in+our+Druid+Discussions+section.) ![copy_link](/assets/social-logos/copy_link-05d8dc5dc8576fc78425ad34d07241b060878835e555a30417ff41c18335e575.svg "copy\_link") ![Shashank N.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Shashank N.") SN Loading... [Shashank N.](https://www.g2.com/users/57c31f42-3b71-4346-9729-19761c167a86 "Shashank N.") • over 5 years ago Data Engineer at Walmart More Options - [ # Is it good to use Druid (for a small dataset) as an in-memory database ? ](/discussions/35785-is-it-good-to-use-druid-for-a-small-dataset-as-an-in-memory-database) My client has used Druid to store a small time-series dataset . This dataset is used by a spark application . Is it good to use Druid (for a small dataset) as an in-memory database ? [ Columnar Databases Software ](https://www.g2.com/tags/columnar-databases-software)[ Big Data Processing and Distribution Software ](https://www.g2.com/tags/big-data-processing-and-distribution-software)[ Data Warehouse Software ](https://www.g2.com/tags/data-warehouse-software)[ Relational Databases Software ](https://www.g2.com/tags/relational-databases-software) [ Time Series Databases Software ](https://www.g2.com/tags/time-series-databases-software) Show More * * * \<0\>0\>Upvotes 1 * * * 1 Comment [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+Druid+questions+and+get+answers+from+expert+users+in+our+Druid+Discussions+section.&title=Druid+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=Druid+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=Druid+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss%0aAsk+Druid+questions+and+get+answers+from+expert+users+in+our+Druid+Discussions+section.) [![mail](/assets/social-logos/mail-d55c53b04bf49872e40cd2443b85a99caa23394e6cf154ae32a9d08377c15d86.svg "mail")](mailto:?subject=Druid+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss%0aAsk+Druid+questions+and+get+answers+from+expert+users+in+our+Druid+Discussions+section.) ![copy_link](/assets/social-logos/copy_link-05d8dc5dc8576fc78425ad34d07241b060878835e555a30417ff41c18335e575.svg "copy\_link") ## Start a New Software Discussion Have a software question? Get answers from real users and experts [Start A Discussion](/products/druid/discussions/new) * * * ![Product Avatar Image](https://images.g2crowd.com/uploads/product/hd_favicon/5d886392527662054de5015b374ff3a1/druid.svg "Product Avatar Image") ### Have you used Druid before? Answer a few questions to help the Druid community [ Yes ](javascript:void(0))[ Yes ](https://www.g2.com/authorize?form=signup&return_to=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fdruid%2Fdiscuss%3Fsmall_ask%3Ddruid) No ## Top Contributors in Druid 1 ![Duminda Kaviranga G.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Duminda Kaviranga G.") DG Loading... ### [Duminda Kaviranga G.](https://www.g2.com/users/e8b589af-1494-40b2-9209-372a777af34f "Duminda Kaviranga G.") Computer Engineer 1 pt