Concurrency in C# Example
C#, .NET 프로그램에 사용할 수 있는 라이브러리 및 언어 기능을 사용하면 동시성(Concurrency) 구현을 쉽게 할 수 있다. 동시성 개요1를 다시 정리해 보면 다음과 같다.
- Concurrency : Doing more than one thing at a time. (Concurrency Example)
- Multithreading : A form of concurrency that uses multiple threads of execution.
- Parallel Processing : Doing lots of work by dividing it up among multiple threads that run concurrently.
- Asynchronous Programming : A form of concurrency that uses futures or callbacks to avoid unnecessary threads. (Async-Await-Task Example)
- Reactive Programming : A declarative style of programming where the application reacts to events.
여기에 사용한 예제2는 gavilanch3(Youtube) - Introduction to Concurrency in C#, 강좌를 참고하였다.
일반 비동기 방식
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using System.Diagnostics;
var stopWatch = new Stopwatch();
var names = new List<string>() { "홍길동", "홍길서", "홍길남", "홍길북" };
Console.WriteLine("Default Start...(8초)");
stopWatch.Start();
foreach (var name in names)
{
await Method1(name);
await Method2(name);
await Method3(name);
await Method4(name);
}
stopWatch.Stop();
WriteTime(stopWatch.Elapsed.Seconds, ConsoleColor.Red);