Backend Queries

About

This skill ensures high-quality backend data management by enforcing best practices for SQL and ORM operations. It guides the creation of efficient data retrieval and manipulation logic, emphasizing security through parameterized statements and performance through strategic indexing and transaction management. It is particularly useful when developing repositories, services, or DAOs that require robust database integration while maintaining data consistency and system speed.

Key Features

• Implements query timeouts to protect system stability from runaway queries
• Optimizes performance using column selection, indexing, and result caching
• Prevents SQL injection using parameterized statements and prepared queries
• Ensures data consistency via managed transactions for multi-step operations
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• Eliminates N+1 query problems through eager loading and prefetching strategies

Use Cases

• Refactoring inefficient database queries to improve application response times
• Developing secure repository layers or Data Access Objects (DAOs) for backend applications
• Implementing complex data migrations or multi-record updates within transactional boundaries