Test AWS App Runner reliability with Gremlin Failure Flags. Inject latency and errors into your service code to validate graceful degradation.
AWS App Runner is designed so a team can ship a service without an infrastructure conversation. That's a real benefit with a predictable side effect: services reach production without a resilience review, because no step in the process would naturally prompt one.
The services that land here are often under the most delivery pressure, so their error handling reflects whatever was fastest to write. A database call with no timeout. A retry loop with no backoff. An external API treated as though it never fails. None of it shows up in normal operation.
Add Failure Flags to your service and you can apply the scrutiny the platform skipped. Inject latency into a dependency and see whether your service returns a usable error or hangs until the request times out. Inject a failure and check whether anyone finds out.
For a service nobody has ever stress-tested, those first few answers usually justify the whole exercise.
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.
* Failure Flags works wherever you can add the SDK to your application and run the Gremlin sidecar. Not every language and platform combination has been individually tested, and not all are officially supported. Check our compatibility documentation for what's verified, or get in touch if you don't see your runtime.
Intelligent Health Checks - AWS
Automatically monitor your AWS services during testing in one-click with Intelligent Health Checks.
AWS integration
Integrate Gremlin with your AWS account for automatic Health Check creation, service discovery, and more.
Using Failure Flags by proxy
Use Failure Flags, Gremlin's application-level fault injection feature, without changing a single line of code.
Installing Gremlin on Amazon ECS
Learn how to install Gremlin on EC2-backed Amazon Elastic Container Service (ECS) deployments.
Installing Gremlin on AWS - Configuring your VPC
Amazon Web Services (AWS) has unique networking requirements that must be implemented for Gremlin to run successfully…
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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