Total 44,110 skills, Backend Development has 3827 skills
Showing 12 of 3827 skills
File upload skill. Provides capabilities of obtaining file upload credentials and uploading files. It is triggered when users need to "upload files" or "obtain file upload credentials".
Write Rails code in 37signals/classic style: rich models, CRUD controllers, concerns, state-as-records, Minitest. Use when writing or modifying Ruby on Rails application code.
Implement Syncfusion ASP.NET Core Gantt Chart component (EJ2) for project management and task scheduling. Use this when working with Gantt charts, project timelines, task dependencies, or resource allocation in ASP.NET Core applications (Tag Helper/Razor Pages/MVC). This skill covers data binding, task management, editing, filtering, export, and timeline customization.
Help with MongoDB query optimization and indexing. Use only when the user asks for optimization or performance: "How do I optimize this query?", "How do I index this?", "Why is this query slow?", "Can you fix my slow queries?", "What are the slow queries on my cluster?", etc. Do not invoke for general MongoDB query writing unless user asks for performance or index help. Prefer indexing as optimization strategy. Use MongoDB MCP when available.
Optimize MongoDB client connection configuration (pools, timeouts, patterns) for any supported driver language. Use this skill when working/updating/reviewing on functions that instantiate or configure a MongoDB client (eg, when calling `connect()`), configuring connection pools, troubleshooting connection errors (ECONNREFUSED, timeouts, pool exhaustion), optimizing performance issues related to connections. This includes scenarios like building serverless functions with MongoDB, creating API endpoints that use MongoDB, optimizing high-traffic MongoDB applications, creating long-running tasks and concurrency, or debugging connection-related failures.
Generate read-only MongoDB queries (find) or aggregation pipelines using natural language, with collection schema context and sample documents. Use this skill whenever the user asks to write, create, or generate MongoDB queries, wants to filter/query/aggregate data in MongoDB, asks "how do I query...", needs help with query syntax, or discusses finding/filtering/grouping MongoDB documents. Also use for translating SQL-like requests to MongoDB syntax. Does NOT handle Atlas Search ($search operator), vector/semantic search ($vectorSearch operator), fuzzy matching, autocomplete indexes, or relevance scoring - use search-and-ai for those. Does NOT analyze or optimize existing queries - use mongodb-query-optimizer for that. Does NOT handle aggregation pipelines that involve write operations. Requires MongoDB MCP server.
Implement the Syncfusion ASP.NET Core File Manager component for file browsing, management, and organization. Use this when building file browsers, implementing file operations (upload/download), customizing toolbars and context menus, enabling drag-and-drop, and configuring data binding for file systems. This skill covers file access, file events, search and filtering, and layout customization.
Deno integration. Manage data, records, and automate workflows. Use when the user wants to interact with Deno data.
Expert in Java development with Spring Boot and enterprise patterns
Use when upgrading Neo4j drivers to new major versions
Modeling business domains. Aggregates, value objects, domain events, rich models, repositories.
Build a new API connector or provider by matching the target repo's existing integration pattern exactly. Use when adding one more integration without inventing a second architecture.