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Modernize your codebase
without breaking production

Record live traffic, refactor with confidence, verify identical behavior. Turn months of manual test writing into days of safe modernization.

Comparison

Refactor legacy code faster with peace of mind

Before
Traditional Approach
• Write tests manually: 3-6 months
• Put off refactoring until code freezes
• Coverage based on developers' gut
• Miss edge cases that happen in prod
• Hope nothing breaks
After
With Tusk Drift
• Record live traffic: 1 week
• Refactor whenever convenient
• Coverage from actual user behavior
• Capture real edge cases automatically
• Know nothing broke

Record real-world traffic before refactoring

Run Tusk Drift in staging or production at 1-10% sampling rate for a week to capture actual API behavior: HTTP requests, database queries, cache hits, and more

Screenshot of CLI command for starting service in record mode
Screenshot showing Tusk Drift page showing test results

Code fearlessly with a safety net in place

Migrate from Express to Fastify, break up monoliths, and re-organize code with the security that your changes are checked for backwards compatibility

Verify that nothing breaks in your PR

Replay recorded traces against refactored code to ensure API behavior remains the same –– all tests green means you're good to merge

Screenshot showing Tusk Drift run page with all passing tests

Stop being paralyzed by legacy code

Try free today
Large screenshot showing Tusk Drift run page with all passing tests
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Use Case
Regression TestSafe RefactoringExternal API Drift
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