The engineering notebook
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Articles, practical guides, and engineering notes on backfill.
By Ashish Bhakhand 108 published articles
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3 articles
Reset filtersBuilding Resumable Backfills Instead of One Giant Sync
Process historical data in bounded windows with durable progress, overlapping retries, and idempotent writes.
Idempotent Mobile Health Backfills Across Reinstalls and Devices
Use semantic identities and natural keys so repeated health imports repair missing history without inflating aggregates.
Resumable One-Year HealthKit Backfills
Import long health histories in bounded windows with durable progress and idempotent writes.