Total 31,293 skills, Backend Development has 3060 skills
Showing 12 of 3060 skills
Provides comprehensive guidance for MySQL database including SQL syntax, data types, indexes, transactions, stored procedures, and optimization. Use when the user asks about MySQL, needs to write SQL queries, design database schemas, optimize MySQL performance, or work with MySQL features.
Use when working with Ruby gems, Bundler for dependency management, creating gemspecs, and publishing gems to RubyGems.
Expert Django developer specializing in Async Views, Django Ninja (FastAPI-like), and HTMX patterns for modern full-stack apps.
Rails 7+ specialist with expertise in Hotwire, Turbo, Stimulus, and modern Rails development
NestJS framework for building efficient, scalable Node.js server-side applications. Use when working with NestJS apps, controllers, modules, providers, dependency injection, pipes, guards, interceptors, or building REST/GraphQL APIs.
GraphQL schema and federation expert specializing in resolver optimization, subscriptions, and API gateway patterns
Use when building IoT applications, sensor networks, or edge devices in Rust. Covers telemetry, protocol buffers, protobuf, CoAP, BLE, Bluetooth, serial communication, GPIO, edge computing, OTA update, firmware, data pipeline, MQTT with rumqttc, offline-first store-and-forward, exponential backoff retry, power management, TLS security, and telemetry publishing.
This skill should be used when the user asks to "add a database table", "create a new context", "query the database", "add a field to a schema", "validate form input", "fix N+1 queries", "preload this association", "separate these concerns", or mentions Repo, changesets, migrations, Ecto.Multi, has_many, belongs_to, transactions, query composition, or how contexts should talk to each other.
This skill should be used when the user asks to "add a background job", "process async", "schedule a task", "retry failed jobs", "add email sending", "run this later", "add a cron job", "unique jobs", "batch process", or mentions Oban, Oban Pro, workflows, job queues, cascades, grafting, recorded values, job args, or troubleshooting job failures.
This skill should be used when the user asks to "implement a feature in Elixir", "refactor this module", "should I use a GenServer here?", "how should I structure this?", "use the pipe operator", "add error handling", "make this concurrent", or mentions protocols, behaviours, pattern matching, with statements, comprehensions, structs, or coming from an OOP background. Contains paradigm-shifting insights.
Query .NET APIs across NuGet packages, platform libraries, and local files. Search for types, list API surfaces, compare versions, find extension methods and implementors. Use whenever you need to answer questions about .NET library contents.
Use this skill when you need to alter the PocketBase database schema - creating, updating, or deleting collections. Never write migration SQL by hand.