Shadow Testing
Test your changes with real production traffic patterns - also known as mirroring or dark traffic testing
gor --input-raw :8080 --output-http="http://staging.example.com"
Beyond Simple Traffic Mirroring
GoReplay offers unique capabilities compared to basic proxy-based solutions
Advanced Traffic Mirroring
Capture and replay production traffic in real-time or asynchronously
Response Comparison
Compare responses between old and new versions to catch subtle bugs
Intelligent Traffic Analysis
Advanced analytics and insights into your service behavior patterns
Performance Monitoring
Track latency changes and generate analytics between versions
Middleware Extensions
Write custom middleware for complex traffic analysis and modification
Real-time Insights
Get immediate feedback on service behavior with actual user patterns
How Shadow Testing Works
Capture and replay real production traffic patterns
Capture Traffic
Listen to your network interface to capture production traffic with zero impact
Process & Modify
Filter and adapt requests for your test environment using middleware
Compare & Analyze
Compare responses between versions and analyze behavioral differences
Why Choose Shadow Testing?
Test with confidence using real production behavior
Zero Production Impact
Safely test services with duplicated traffic and isolated test databases
Real User Behavior
Test with actual production traffic patterns impossible to recreate synthetically
Deep Service Testing
Compare responses between versions to catch logic errors, not just exceptions
No Infrastructure Changes
Listen to network traffic directly without modifying your production setup
Ready to Start Shadow Testing?
Join hundreds of companies using GoReplay for reliable testing