build1 distinct publisher
A million-element IN clause MySQL absorbed took Mercari's TiDB cluster down with it
Mercari's DBRE team found the query only after switching a batch read endpoint to TiDB. Query replay had run first and had not flagged it.
Publishers:engineering.mercari.com
Reality
- Evidence63
- Adoption58
- Hype gap−12
- Incentives42
- Confidence62