Backend Queries

About

Backend Queries provides comprehensive guidance for writing secure and high-performance database interactions across various environments. It helps developers implement best practices such as parameterized statements to prevent SQL injection, eager loading to solve N+1 query issues, and strategic indexing for optimized lookups. Whether you are using raw SQL or an ORM, this skill ensures that data retrieval and manipulation logic follows strict performance standards, includes proper transaction management, and utilizes caching where necessary to maintain a responsive application architecture.

Key Features

• Performance optimization via eager loading and proper database indexing
• Secure query implementation using parameterized statements to prevent SQL injection
• Robust transaction management and query timeout implementation
• Efficiency-focused refactoring, such as replacing wildcard selections with specific columns
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• Advanced data handling including pagination, filtering, and complex JOIN operations

Use Cases

• Architecting secure data access layers using ORM methods or raw SQL repositories
• Refactoring legacy database logic to improve query efficiency and code readability
• Resolving performance bottlenecks caused by slow-running database queries or N+1 problems