Inside Hyperdrive: How we solved a rare Hyperdrive MySQL caching bug blog.cloudflare.com

Cloudflare made Hyperdrive’s MySQL support generally available after fixing a caching bug that caused rare empty query results or hangs. The bug arose when Hyperdrive’s Client and Endpoint shared a cache but stored MySQL responses in different protocol formats; Cloudflare fixed it by caching responses in a canonical format, bringing Client connection success to 99.99%.