MySQL Patterns Use this skill when working on MySQL or MariaDB schema design, migrations, slow-query investigation, queue-style transactions, connection pools, or production database configuration. Prefer exact version checks before applying a feature-specific pattern because MySQL and MariaDB have diverged in several SQL details. Activation - Designing MySQL or MariaDB tables, indexes, and constraints - Reviewing migrations before they run on large production tables - Debugging slow queries, lock waits, deadlocks, or connection exhaustion - Adding keyset pagination, upserts, full-text search…