Total 53,169 skills, Backend Development has 4302 skills
Showing 12 of 4302 skills
Connection pooling and caching for PostgreSQL and MySQL databases. Load when connecting Workers to existing Postgres/MySQL, reducing connection overhead, using Drizzle/Prisma with external databases, or migrating traditional database apps to the edge.
Use when reviewing or writing new SQL/SQLAlchemy queries, especially in `backend/app/services/`, `backend/app/models/`, or migration files. Catches missing tenant filters, N+1 queries, async-session misuse, and missing indexes before they reach production. Trigger when the user says "review this query", "check for N+1", "is this query safe", or modifies repo-layer code.
Admin-only paginated viewer for stable canister state. Use whenever the user asks for a viewer, dashboard, debug panel, or admin browse over backend data — users, items, orders, logs, or any stable Map/Set/Array/VarArray/List/Stack/Queue. Pre-installed in every Caffeine app via the `caffeineai-data-viewer` mops package; this skill explains what it does and how to keep using it correctly.
Golang application framework using uber-go/fx — fx.New, fx.Provide, fx.Invoke, fx.Module, fx.Lifecycle hooks, fx.Annotate (name/group/As), fx.Decorate, fx.Supply, fx.Replace, fx.WithLogger, and signal-aware Run(). Apply when using or adopting uber-go/fx, when the codebase imports `go.uber.org/fx`, or when wiring services with fx.New. For raw DI without lifecycle, see `samber/cc-skills-golang@golang-uber-dig` skill.
Clerk authentication router. Use when user asks about adding authentication, setting up Clerk, custom sign-in flows, Next.js patterns, organizations, syncing users, or testing. Automatically routes to the specific skill based on their task.
Design a PostgreSQL-specific schema. Covers best-practices, data types, indexing, constraints, performance patterns, and advanced features
后端微服务开发规范，涵盖目录结构、分层架构（API/Service/DAO）、依赖注入、配置管理、Spring Boot 最佳实践。当用户进行后端开发、创建新微服务、编写 Kotlin/Java 代码或设计服务架构时使用。
Amazon Aurora MySQL — creates, modifies, and advises on Aurora MySQL clusters specifically (MySQL-compatible engine, Aurora serverless, parallel query). Trigger for Aurora MySQL cluster operations, ACU sizing, I/O-Optimized storage, commitment pricing, or MySQL upgrade planning. Aurora MySQL uses full (VPC-based) configuration — express configuration is PostgreSQL-only. For Aurora PostgreSQL, use amazon-aurora-postgresql instead. Contains safety guardrails and response templates that override defaults.
Provides technical specifications and implementation details for uploading audience members to Google products using the Data Manager API /v1/audienceMembers/ingest endpoint and its associated client libraries. Use this skill when the user wants to upload audience members for Customer Match, mobile device ID audiences, or any other audience use case supported by the Data Manager API. Don't use for uploading events or conversions (use the data-manager-api-event-ingestion skill).
Provides technical specifications and implementation details for event and conversion ingestion to Google products using the Data Manager API /v1/events/ingest endpoint and its associated client libraries. Use this skill when the user wants to upload offline conversions, enhanced conversions for leads, click conversions, Google Analytics web or app events, or any other event ingestion use case supported by the Data Manager API. Don't use for uploading audience members (use the data-manager-api-audience-ingestion skill).
HTTP outcalls performed by the backend canister (not in the frontend).
Keep a system's business logic independent of the technology it talks to, by reasoning about which way dependencies point across a hexagonal / ports-and-adapters / clean-architecture boundary. A system holds three kinds of code — its reason to exist (the business logic), its connections to the outside world, and how it's run (the wiring and entrypoint) — so the question is never "which folder" but "is this the reason, a connection, or how it's run, and what may it depend on?" Use it to scaffold a new system, place a feature, integration, or entrypoint, review how it's shaped, or write an ADR about the layout — and whenever a dependency points the wrong way or you're unsure where something belongs. Language-/framework-agnostic: the kinds map onto whatever names a project uses (app/infra/run, domain/adapters/cmd). Reach for it even when the user never says "hexagonal": "where should this go", "scaffold it ports-and-adapters", "review against hexagonal principles", "which layer owns this" are all signals.