Retry and flake handling
4 min readLast updated 2026-04-21
Automatic retries with flake detection, quarantine, and root cause tagging.
Flaky tests are the #1 source of CI noise. Check Studio detects, retries, and quarantines flaky tests automatically.
Retry configuration
// checkstudio.config.js
module.exports = {
retries: 2, // Retry up to 2 times
retryStrategy: 'fail', // Mark as fail if all retries fail
};Flake detection
A test is flagged as flaky if it passes on retry after an initial failure. Flaky tests are tracked in a dedicated dashboard with trendlines.
Quarantine
Tests that remain flaky after 5 runs are moved to quarantine. They run in a separate job and do not block merges. Teams receive weekly quarantine digests.
Debugging flakes
Check Studio captures screenshots, console logs, and network traces for every retry. Compare attempts side-by-side in the dashboard.
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