GitHub Actions Scheduled Workflows Silently Skip Triggers, Community Flags Reliability Gap

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A GitHub Community discussion (thread #207247) raised concerns after a user's hourly scheduled workflow stopped triggering entirely, with no run records created despite the cron job being correctly configured. Manual workflow_dispatch runs completed without issue, confirming the problem lay with GitHub's scheduler itself rather than the workflow logic. GitHub's own documentation acknowledges that scheduled events are handled on a 'best-effort' basis and can be delayed or dropped under high load, especially near the top of the hour. However, five or more consecutive missed hourly triggers go beyond typical delays, pointing to a deeper scheduler-level failure. The community recommended diagnostic steps including using the GitHub CLI to inspect workflow state, reviewing recent scheduled runs, and toggling the workflow off and on to force re-registration with GitHub's scheduler.

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