probelabs/goreplay

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

19318 stars · 96 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

GoReplay is an open-source CLI tool written in Go that captures live HTTP traffic from production servers and replays it against test environments. It enables shadow testing, load testing, and traffic monitoring using real user data without acting as a proxy or requiring infrastructure changes.

Use cases

• replay production HTTP traffic against a staging environment
• load test a service with real user traffic patterns
• capture live requests like tcpdump for debugging
• validate deployments and config changes with real data before rollout
• shadow test new infrastructure without affecting production
• record and analyze request patterns for monitoring

When to choose

• you want to test with real production traffic instead of synthetic test cases
• you need load testing that reflects actual user behavior
• you want a non-invasive capture tool that runs alongside your service without being a proxy
• you need session-aware replay with connection pooling and TLS handling

When to avoid

• you need to test non-HTTP binary protocols like Thrift or ProtocolBuffers (requires the paid PRO version)
• you need a GUI-based testing tool
• your traffic is encrypted end-to-end and you cannot capture on the terminating host
• you only need simple unit or contract testing without real traffic

Facets

cli-tool · maturity active

testing benchmarking monitoring http-server middleware testing developer-tools performance web-development windows cli go traffic-replay load-testing shadow-testing http-traffic-capture qa real-traffic-testing devops linux macos

Member repositories

For agents

markdown · JSON · MCP: product_card(name="probelabs/goreplay")