Backend

A comprehensive LangChain4J vector store configuration guide offering practical Java code examples for RAG applications, production optimizations, and multiple database integrations.

Provides detailed checklists and patterns for developing features in Langfuse's monorepo. Covers tRPC routers, public APIs, BullMQ queues, and environment configuration with concrete examples. Focuses on layered architecture, multi-tenant isolation, and observability patterns specific to their tech stack.

Provides concrete guidelines for creating database migrations with reversible changes, proper naming conventions, and zero-downtime deployment strategies. Includes specific patterns for adding/removing columns, index management, and separating schema from data migrations. Offers framework-specific examples for Alembic, Rails, and Sequelize.

Provides concrete error handling patterns for Python and TypeScript/JavaScript, covering custom exceptions, retry logic, graceful degradation, and error collectors. Includes practical code examples for common scenarios like API calls and data validation.

A comprehensive and practical guide to Spring Data Neo4j integration, offering clear setup instructions, entity mapping patterns, repository implementations, and testing strategies for graph database development.

A comprehensive Rust backend skill providing production-ready patterns for Axum web applications with clean architecture, error handling, and database integration.

A comprehensive and well-structured Skill for implementing Spring Data JPA persistence layers with clear examples, best practices, and coverage of essential features like auditing, pagination, and transactions.

This skill enforces WooCommerce backend PHP development standards, ensuring code follows project conventions for file structure, naming, testing, and data integrity. It mandates its use before writing unit tests or modifying backend code, linking to detailed guides for specific tasks like dependency injection and hook usage.

A comprehensive error handling framework for Node.js/TypeScript backends with custom error classes, middleware, validation, and external service error management.

This skill provides concrete guidance for implementing constructor-first dependency injection in Spring Boot projects. It covers mandatory and optional dependencies, bean resolution, and validation testing with specific code examples. The workflow helps developers create testable, maintainable services while avoiding common anti-patterns like field injection.

A comprehensive and practical DynamoDB skill for Java developers using AWS SDK v2, covering essential operations from basic CRUD to advanced patterns with clear examples.

Provides Supabase implementation patterns for PostgreSQL 16 with pgvector, RLS policies, real-time subscriptions, and Edge Functions. Includes modular guides for database setup, multi-tenant isolation, and TypeScript client integration with practical code examples.