Total 44,046 skills, Backend Development has 3824 skills
Showing 12 of 3824 skills
Concurrency: threads vs async, locks/mutexes/rwlocks, atomics, lock-free, actor model, STM, deadlock
Networks: TCP/IP, HTTP/2/3, TLS 1.3, DNS, BGP, WebSockets, QUIC, socket programming
Nim 2.x: macros, templates, compile-time, memory ARC/ORC, FFI, Nimble, systems programming
Use Litestar's event emitter and listener system with `@listener`, `request.app.emit()`, multiple listeners per event, multi-event listeners, shared argument contracts, and custom event emitter backends. Use when decoupling async side effects, fanout-style in-process notifications, or transport-triggered domain events inside a Litestar app. Do not use for startup/shutdown lifecycle hooks, request/response interception, or broker-backed pub-sub systems that belong in app setup, lifecycle hooks, or channels.
Develop Python applications using modern patterns, uv, functional-first design, and production-first practices. Use this whenever working with .py files, pyproject.toml, uv commands, pip/pip3, poetry, virtualenv/venv, inline script metadata, or Python tooling like pytest, mypy, ruff, asyncio, itertools, functools, or dataclasses. If the task involves running Python, managing Python dependencies, creating environments, or building Python packages, load this skill and prefer uv-oriented workflows.
Brutally honest Rails code review from DHH's perspective. Use when reviewing Rails code for anti-patterns, JS framework contamination, or violations of Rails conventions.
IoT protocols: Zigbee (mesh), Z-Wave (home), LoRaWAN (long-range), CoAP (lightweight), Matter (interoperable), Thread (I
API architecture: REST design, versioning, HATEOAS, auth patterns, OpenAPI docs, gateway patterns
DDD: bounded contexts, aggregates, entities, value objects, domain events, ubiquitous language
Implements networking for multiplayer games, handling protocols, latency, and synchronization.
Use Electric with Drizzle ORM or Prisma for the write path. Covers getting pg_current_xact_id() from ORM transactions using Drizzle tx.execute(sql) and Prisma $queryRaw, running migrations that preserve REPLICA IDENTITY FULL, and schema management patterns compatible with Electric shapes. Load when using Drizzle or Prisma alongside Electric for writes.
Generate pure mapper functions for transformations between layers, HTTP DTOs to use case inputs dtos, use case to response dto, etc.