Summary
On October 14, 2026, Cloudflare announced general availability of MySQL support in Hyperdrive, its connection-pooling and query-caching layer for Workers, after diagnosing and fixing a rare protocol bug in query-result caching.
What changed
Hyperdrive MySQL support moved to general availability; Cloudflare detailed a subtle MySQL protocol bug in query-result caching that produced a roughly 0.001% error rate and the fix that enabled GA.
Why it matters
GA MySQL support lets Workers apps connect to existing MySQL databases with pooled connections and edge caching, cutting latency and connection overhead for serverless backends and broadening Hyperdrive beyond Postgres.
Evidence excerpt
While adding MySQL support to Hyperdrive, we found a subtle protocol bug in query result caching... and made Hyperdrive MySQL generally available.