# Test Database Resilience with the CockroachDB Fault Tolerance Demo

DevFeed: [Test Database Resilience with the CockroachDB Fault Tolerance Demo](<https://devfeed.tech/articles/test-database-resilience-with-the-cockroachdb-fault-tolerance-demo-23774.md>)

Original publisher: [Read original article](<https://cockroachlabs.com/blog/database-fault-tolerance-demo-cockroachdb>)

Author: David Bressler,Ayushi Jain

Published: 2026-04-08T00:00:00Z

Content type: tutorial

Language: en

Sources: [Cockroach Labs](<https://devfeed.tech/sources/cockroach-labs.md>)

Topics: [CockroachDB](<https://devfeed.tech/topics/cockroachdb.md>), [Resilience](<https://devfeed.tech/topics/resilience.md>), [Availability](<https://devfeed.tech/topics/availability.md>), [Demo](<https://devfeed.tech/topics/demo.md>), [distributed-systems](<https://devfeed.tech/topics/distributed-systems.md>), [consistency](<https://devfeed.tech/topics/consistency.md>), [Cloud](<https://devfeed.tech/topics/cloud.md>)

Tags: [availability](<https://devfeed.tech/tags/availability.md>), [cloud](<https://devfeed.tech/tags/cloud.md>), [cockroachdb](<https://devfeed.tech/tags/cockroachdb.md>), [consistency](<https://devfeed.tech/tags/consistency.md>), [demo](<https://devfeed.tech/tags/demo.md>), [failover](<https://devfeed.tech/tags/failover.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [production](<https://devfeed.tech/tags/production.md>), [resilience](<https://devfeed.tech/tags/resilience.md>), [verify](<https://devfeed.tech/tags/verify.md>)

## AI overview

This article explains how to use CockroachDB's Fault Tolerance Demo to trigger a real availability zone failure and observe availability, performance, consistency, failover, and replica rebalancing. The Public Preview demo is available to CockroachDB Cloud Advanced customers through the Cloud Console and should be run on a dedicated test or staging cluster.

## Source excerpt

The CockroachDB database fault tolerance demo lets you trigger a real availability zone (AZ) failure within your cluster.