Introduction
Meta’s engineering teams recently undertook one of the most ambitious migrations in the company’s history—transitioning the entire data ingestion system that powers the social graph. This system, which relies on one of the world’s largest MySQL deployments, incrementally processes petabytes of data daily to feed analytics, reporting, machine learning, and product development. The move from a legacy architecture to a new, self-managed warehouse service was critical for ensuring reliability at hyperscale. In this article, we explore the strategies and architectural decisions that made this large-scale migration a success.
