FlowReactor documentation
Inspect requests and queries, run local simulators, and test how your application handles delays and failures.
New to FlowReactor? Start with what it can do, or follow the quick start to make your first request. For an existing setup, choose your proxy or simulator below. Shared controls are under Using FlowReactor; connection problems are covered in troubleshooting.
Get started
Understand the features, install FlowReactor and make your first request.
Proxies
Inspect and control traffic to real databases and HTTP APIs.
Simulators
Run local HTTP APIs, DynamoDB tables and Cognito user pools.
Using FlowReactor
Manage services and projects, inspect activity, pause traffic and configure failures.
Testing guides
Check database timeouts, API retries, query ordering and sign-in flows.
Reference
Find connection details, settings, shortcuts, licensing information and troubleshooting.

