TLDR Tech / DevOps
Migrating Data Ingestion Systems at Meta Scale
Meta successfully migrated its entire MySQL-powered social graph data ingestion system — which processes several petabytes daily — to a new self-managed architecture after building automated tools and a multi-phase 'shadow job' testing process to validate data quality across tens of thousands of jobs. The company deprecated its legacy customer-owned pipeline system in favor of the new hyperscale architecture, using techniques like reverse shadowing and continuous checksum monitoring to ensure zero downtime during the transition.
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