Total 31,127 skills, Backend Development has 3055 skills
Showing 12 of 3055 skills
Provides comprehensive guidance for DDD in microservices including bounded contexts, service boundaries, event-driven architecture, and microservice patterns. Use when the user asks about DDD microservices, needs to design microservices with DDD, or implement microservice architectures.
OpenAPI 3.1 specification, schema design, and code generation. Use when designing REST APIs, generating TypeScript clients, or creating API documentation. Use for openapi, swagger, api-spec, schema, code-generation, api-docs, openapi-typescript, zod-openapi.
Build Spring Boot 4.x applications following best practices. Use when developing or modifying Spring Boot apps that use Spring MVC, Spring Data JPA, Spring Modulith, Spring Security, or Spring Boot testing including package structure, REST APIs, entities/repositories, service layer, modular monoliths, and REST API tests.
Java and Spring Boot expert including REST APIs, JPA, and microservices
SESSION_ORCHESTRATION.mdに基づくセッション状態遷移管理。内部用。Do NOT load for: user session management, login state, app state handling.
Design scalable distributed systems using structured approaches for load balancing, caching, database scaling, and message queues. Use when the user mentions "system design", "scale this", "high availability", "rate limiter", or "design a URL shortener". Covers common system designs and back-of-the-envelope estimation. For data fundamentals, see ddia-systems. For resilience, see release-it.
Guide for building SumUp payment integrations that cover both terminal (card-present) and online (card-not-present) checkout flows using SumUp SDKs and APIs. Use when implementing or debugging SumUp checkout creation, payment processing, reader pairing, Card Widget integrations, Cloud API reader checkouts, or authorization setup with API keys/OAuth and Affiliate Keys.
Foundational EVM integration for AAVE-related scripts using viem. Use when user asks to read balances, read/write contracts, send transactions, or set up typed viem clients for Ethereum and Arbitrum.
Express.js framework patterns including routing, middleware, request/response handling, and Express-specific APIs. Use when working with Express routes, middleware, or Express applications.
Metaplex development on Solana — NFTs, tokens, compressed NFTs, candy machines, token launches. Use when working with Token Metadata, Core, Bubblegum, Candy Machine, Genesis, or the mplx CLI.
Expert Go backend code reviewer specializing in microservices, GORM/DAL patterns, dependency injection, and resource management. Focuses on logic correctness, goroutine leak detection, and Go-specific best practices for production-grade services.
Fix PHPStan static analysis errors by adding type annotations and PHPDocs. Use when encountering PHPStan errors, type mismatches, missing type hints, or static analysis failures. Never ignores errors without user approval.