Design Patterns MCP Server

{ "id": "coroutines", "name": "Coroutines Pattern", "category": "Concurrency", "description": "Lightweight threads for asynchronous programming that can be suspended and resumed", "when_to_use": "Non-blocking I/O, concurrent tasks, structured concurrency, UI responsiveness", "benefits": "Efficient concurrency, structured lifecycle management, cancellation support, resource efficiency", "drawbacks": "Learning curve, debugging complexity, requires suspend functions", "use_cases": "Network requests, background processing, data streaming, UI updates", "complexity": "Medium", "tags": ["concurrency", "asynchronous", "kotlin", "suspend", "lightweight-threads"], "examples": { "kotlin": { "language": "kotlin", "code": "import kotlinx.coroutines.*\n\nsuspend fun fetchUserData(userId: String): User = coroutineScope {\n val profile = async { api.fetchProfile(userId) }\n val friends = async { api.fetchFriends(userId) }\n \n User(profile.await(), friends.await())\n}\n\nsuspend fun processUserActions(userId: String) = coroutineScope {\n try {\n val userData = async { fetchUser(userId) }\n val actions = async { fetchActions(userId) }\n \n process(userData.await(), actions.await())\n } catch (e: Exception) {\n // Automatic cancellation of both coroutines\n logger.error(\"Failed to process user $userId\", e)\n throw e\n }\n}\n\nfun main() = runBlocking {\n val result = fetchUserData(\"123\")\n println(result)\n}" } } }