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check-database-scaling

Analyzes PHP code for database scaling issues. Detects single DB connection for all queries, missing read replica configuration, SELECT queries hitting master, and missing connection pooling.

skills/check-database-scaling/SKILL.md

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# Database Scaling Check

Analyze PHP code for database access patterns that prevent horizontal scaling, overload the primary database, and miss read replica offloading opportunities.

## Detection Patterns

### 1. Single DB Connection for All Queries

```php
<?php

declare(strict_types=1);

// BAD: All queries use the same connection