rb:n1-check

What problem does it solve?

Diagnoses and explains N+1 database query patterns that cause slow index pages, API responses, serializers, and Hotwire screens by identifying lazy association loads and missing preload strategies.

Core Features & Use Cases

• Detection: Scans controllers, models, serializers, blueprints, and GraphQL codepaths to locate loops and access patterns that trigger N+1 queries.
• Explanation & Fixes: Describes root causes such as serializer-induced repeated loads and missing includes, and recommends includes, preload, eager_load, or preloader APIs.
• Best Practices: Suggests Bullet or strict_loading checks, batching, and query composition techniques to prevent regressions in production.

Quick Start

Use rb:n1-check to analyze the specified path or feature for N+1 queries, explain the cause, and suggest precise preload or eager loading fixes.