With a unique architecture that is the best of both shared nothing and separate storage/compute, Druid runs non-stop no matter what.

  • Continuous backup
  • Automatic recovery
  • Automatic rebalancing
  • Rolling upgrades

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Continuous Backup

Deep storage, broad protection

As data segments are committed by the data nodes, they are automatically written to deep storage, which can be a durable object store in the cloud, or HDFS on premises. You don’t need to do traditional backups of Druid since it provides automatic, continuous backup of all committed data.

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See all the storage extensions Druid supports

Automatic Recovery

Dead nodes are no big deal

When a segment is created, Druid automatically replicates it onto a different node (you can configure more replicas if you need). When a node fails, coordinating nodes automatically rebalance the cluster, pulling the missing data from deep storage as needed. When the node is back online, Druid will once again automatically rebalance the cluster.

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See how it all works together


Automatic Rebalancing

Add node. Druid does the rest.

As your needs grow, you’ll add nodes. When you do, Druid automatically rebalances the data nodes. For other databases, this rebalancing is a manual and lengthy process. Likewise, if you take a node down for maintenance, Druid will handle the rebalancing so your users won’t miss a beat.

Learn about rebalancing

Learn what you need for modern analytics apps

Rolling Upgrades

All the gain, none of the pain

Upgrading Druid does not require downtime. Instead, one node at a time is taken offline, upgraded, and returned to the cluster. Druid functions normally during the rolling upgrade, even though some nodes will be using a different Druid version than other nodes during the upgrade.

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Learn more about Apache Druid

An introduction to Apache Druid

Druid flexible, efficient, and resilient design make it the best choice for modern analytics application. Here’s a quick but technical overview of what makes Druid different.

An introduction to Analytics Applications

The world of analytics is shifting from traditional Bill solutions designed by data engineers to custom applications created by developers. Learn what this is all aout and what it takes to build successful analytics application.

Try Apache Druid for yourself. Get started in minutes with Imply Polaris. No credit card required.


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