The original headline is: "How a 60-Day Sliding Window Flooded Our Slack with 500 Duplicate Alerts"

Short summary

A 60-day sliding window in a dev.to crosspost script caused hundreds of duplicate Slack alerts because aged-out articles fell outside the lookback range, triggering recreation attempts and 422 errors on every CI run. A well-intentioned auto-update feature for stale publishAfter dates created a commit-push-CI loop that amplified the problem. The fix was to remove the time window entirely and fetch all published articles with pagination.

• •60-day sliding window in crosspost script caused duplicate 422 errors and Slack spam on every CI run
• •Auto-updating stale publishAfter dates created a commit-push-CI loop that amplified the alert storm
• •Fix: remove time window entirely and fetch all published articles with pagination

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