Total 53,693 skills, Backend Development has 4318 skills
Showing 12 of 4318 skills
Diagnoses and optimises slow SQL queries using EXPLAIN ANALYZE. Covers identifying bottlenecks (sequential scans, bad estimates, heap fetches), index strategy, query rewrites, and verification. Invoked when the user asks to optimize a query, fix a slow database query, or improve database performance.
Develop STM32 firmware on CubeMX-generated HAL projects, including peripheral configuration, BSP driver structure, interrupt-safe code, and hardware-aware troubleshooting. Use when Codex needs STM32 HAL implementation guidance rather than generic C advice.
Use when designing, implementing, or reviewing an embedded accounting engine inside a SaaS, ERP, POS, inventory, payroll, school, clinic, NGO, marketplace, or mobile-money-heavy system. Covers one append-only general ledger, one LedgerPostingService write path, mapping-layer account resolution, IFRS/IFRS for SMEs defaults, subledger tagging, idempotent posting, reversing journals, period locks, audit trails, report projections, and accounting integrity tests.
Use when you need to apply Java concurrency best practices — including thread safety fundamentals, ExecutorService thread pool management, concurrent design patterns like Producer-Consumer, asynchronous programming with CompletableFuture, immutability and safe publication, deadlock avoidance, virtual threads, scoped values, backpressure, cancellation discipline, and observability for concurrent systems. This should trigger for requests such as Review Java code for concurrency. Part of cursor-rules-java project
NestJS 11+ best practices for enterprise Node.js applications with TypeScript. Use when writing, reviewing, or refactoring NestJS controllers, services, modules, or APIs. Triggers on: NestJS modules, controllers, providers, dependency injection, @Injectable, @Controller, @Module, middleware, guards, interceptors, pipes, exception filters, ValidationPipe, class-validator, class-transformer, DTOs, JWT authentication, Passport strategies, @nestjs/passport, TypeORM entities, Prisma client, Drizzle ORM, repository pattern, circular dependencies, forwardRef, @nestjs/swagger, OpenAPI decorators, GraphQL resolvers, @nestjs/graphql, microservices, TCP transport, Redis transport, NATS, Kafka, NestJS 11 breaking changes, Express v5 migration, custom decorators, ConfigService, @nestjs/config, health checks, or NestJS testing patterns.
Lucide icon library integration for Laravel Blade templates. Use when working with Lucide icons in Laravel applications, Blade components with the x-lucide- prefix, icon styling with Tailwind CSS, dynamic icon rendering in Blade, or any Laravel view work requiring SVG icons. Keywords include lucide icons, blade icons, x-lucide, SVG icons Laravel, blade-lucide-icons, mallardduck/blade-lucide-icons.
Comprehensive API gateway patterns skill covering Kong, routing, rate limiting, authentication, load balancing, traffic management, and production gateway architecture
应急管理系统权限体系开发规范。当创建新功能模块、配置菜单权限、设置数据权限时必须使用此 Skill。CX 命令执行时强制要求生成菜单权限迁移 SQL。
Cargo Rust package manager and build system. Use for Rust crates.
Laravel PHP framework with Eloquent ORM and Blade templates. Use for PHP applications.
Manage concurrent background workers with scheduling, dependencies, health monitoring, and automatic disabling of failing workers.
Configure Salvo routers with path parameters, nested routes, and filters. Use for complex routing structures and RESTful APIs.