5 billion records. 10 terabytes. Four weeks. 🚩 How do you migrate… — Wix Engineering — TG.ME

5 billion records. 10 terabytes. Four weeks. 🚩

How do you migrate data at this scale without disrupting a live system - while millions of new changes keep arriving every day?

In their new article, Avraham Rosenzweig and Roy Noyman share the lessons behind one of Wix’s largest data migrations. Read and learn how to:

Uncover corrupted legacy data before it breaks the migration

Detect parity gaps between V1 and V2

Prevent one failed record from blocking the entire pipeline

Calculate the throughput needed to actually finish

A practical playbook for anyone building or migrating large-scale production systems:

https://www.wix.engineering/post/5-billion-records-10-terabytes-four-weeks-a-real-data-migration-playbook

@WixEng ⚡️
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September 2, 2026 76 1