Test how your application handles an Azure Synapse outage. Run Gremlin network experiments and reliability tests to validate reporting resilience.
Azure Synapse Analytics workloads sit behind dashboards and scheduled reports, which means their failures reach people rather than systems. Nobody gets paged. Someone eventually asks why a number looks wrong, usually well after decisions have been made from it.
The reporting layer is what makes this dangerous. Many BI tools respond to an unavailable source by displaying the last successful result, with no visual indication that it's stale. A dashboard showing yesterday's figures looks exactly like one showing today's, and the people relying on that data have no way to know the difference.
Gremlin lets you see what your reporting stack actually does. A blackhole experiment against the Synapse endpoint makes the source unavailable while a dashboard refreshes. A latency experiment pushes query times past your BI tool's timeout so you can watch what it displays.
Showing an honest error rather than stale data is a deliberate choice, and most reporting stacks default the other way unless someone has checked.
Dependencies: Failure Test
Simulate a failed dependency by dropping all network traffic to the dependency.
Dependencies: Latency Test
Recreate poor network conditions by delaying all network traffic to a dependency by 100ms.
Unreliable Networks - Dependencies
Simulate unreliable network conditions when communicating with dependencies by adding latency to API calls. Test whether your users are affected when dependency response times degrade.
* Testing a dependency doesn't require installing anything on it. Gremlin runs the experiment from the service that calls it, so compatibility depends on that host rather than on the dependency itself. Check our compatibility documentation for supported operating systems and platforms, or get in touch if you don't see yours.
Deploying Failure Flags on Azure Container Apps
This guide explains how to deploy the Failure Flags sidecar alongside an application on Azure Container Apps.
Intelligent Health Checks - Azure
Automatically monitor your Azure services during testing in one-click with Intelligent Health Checks.
Authenticating Users with Microsoft Entra ID (Azure Active Directory) via SAML
Learn how to authenticate users to Gremlin by using Microsoft Entra ID (previously Azure Active Directory) and SAML.
Avoid downtime. Use Gremlin to turn failure into resilience.
Gremlin empowers you to proactively root out failure before it causes downtime. See how you can harness chaos to build resilient systems by requesting a demo of Gremlin.
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