How Meta Rebuilt Data Ingestion for Petabyte-Scale Reliability
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Detailed petabyte-scale data ingestion migration at Meta, highly technical and relevant.
Summary
Meta migrated its petabyte-scale MySQL social graph data ingestion platform to a centralized, self-managed warehouse service, replacing fragmented pipelines. The team achieved zero downtime using reverse shadowing, continuous checksum monitoring, and staged migrations (shadow, reverse shadow, cleanup) with automated validation and rollback controls. The new architecture relies on change data capture (CDC) with full dumps and delta tables, minimizing expensive full snapshots for recovery.