Mysql

MySQL Skill

The world's most popular open source database.

Ecosystem Graph Preview

graph LR
  mysql["mysql"]:::core
  classDef core fill:#f9f,stroke:#333,stroke-width:4px;
  drizzle -- "integrates with" --> mysql
  mysql -- "extended by" --> planetscale
  mysql -- "integrates with" --> prisma
  mysql -- "alternative to" --> postgresql
  postgresql -- "alternative to" --> mysql
  prisma -- "integrates with" --> mysql

Recommended Next Skills

• postgresql (Score: 0.93) Why: Direct relationship, Both are Databases, Shared ecosystem (database), Can deploy to aws, Similar network profile
• prisma (Score: 0.73) Why: Direct relationship, Both are Databases, Similar network profile
• drizzle (Score: 0.72) Why: Direct relationship, Both are Databases, Similar network profile

Quick Start

MySQL is highly optimized for read-heavy web workloads. The InnoDB storage engine provides robust ACID compliance.

docker run -d -p 3306:3306 -e MYSQL_ROOT_PASSWORD=secret mysql:8

Production Patterns

Index Optimizations

MySQL heavily relies on clustered indexes (the Primary Key). Always define an auto-incrementing integer or sequential UUID (UUID v7) as your primary key to prevent massive index fragmentation and page splits during high-volume inserts.

Architecture & Scaling

Replication

MySQL's asynchronous replication is the standard for scaling read traffic. Write to the Primary node, and read from Read Replicas, but ensure your application can handle the replication lag (milliseconds).

Error Recovery

Use EXPLAIN to diagnose slow queries. If MySQL is performing a 'filesort' or full table scan, you are missing a critical composite index.

Security Notes

Disable local_infile to prevent arbitrary file reading vulnerabilities. Ensure sql_mode includes STRICT_ALL_TABLES to prevent MySQL from silently truncating strings that exceed column lengths.

References

• MySQL Docs

Why use this skill

Use this when your agent works with mysql — structured patterns beat pasted docs and prevent common hallucinations.

AI pitfalls

• Inventing column names or schema fields
• Using deprecated driver methods or wrong connection strings
• Omitting connection pooling or transaction boundaries

Production checklist

• Migrations version-controlled and applied via CI
• Connection limits and pooling configured
• Backups and restore procedure documented

Related skills

• planetscale — extended by
• prisma — integrates with
• postgresql — alternative to

Last Verified: 2026-07-02