static string _filePath = @"C:\Users\zhengchao\Desktop\测试文件.txt";static void Main(string[] args){WriteLogAsync();Console.ReadKey();}static void WriteLogAsync(){var logRequestNum = 100000;//请求写入日志次数var successCount =0;//执行成功次数var failCount = 0;//执行失败次数//模拟100000次用户请求写入日志操作Parallel.For(0, logRequestNum, i =>{try{var now = DateTime.Now;var logContent = $"当前线程Id:{Thread.CurrentThread.ManagedThreadId},日志内容:暂时没有,日志级别:Warn,写入时间:{now.ToString()}";File.AppendAllText(_filePath, logContent);successCount++;}catch (Exception ex){failCount++;Console.WriteLine(ex.Message);}});Console.WriteLine($"Request Count:{logRequestNum}. Success Count:{successCount} Failed Count:{failCount}.");}

 　　public class SynchronizedFile{private static ReaderWriterLockSlim cacheLock = new ReaderWriterLockSlim();/// <summary>/// 线程安全的写入文件操作/// </summary>/// <param name="action"></param>public static void WriteFile(Action action){cacheLock.EnterWriteLock();try{action.Invoke();}finally{cacheLock.ExitWriteLock();}}}

        static string _filePath = @"C:\Users\zhengchao\Desktop\测试文件.txt";static void Main(string[] args){WriteLogSync();Console.ReadKey();}/// <summary>/// 多线程同步写入文件/// </summary>static void WriteLogSync(){var logRequestNum = 10000;//请求写入日志次数var successCount =0;//执行成功次数var failCount = 0;//执行失败次数var stopWatch = Stopwatch.StartNew();//模拟100000次用户请求写入日志操作var result=Parallel.For(0, logRequestNum, i =>{SynchronizedFile.WriteFile(() =>{try{var now = DateTime.Now;var logContent = $"当前线程Id:{Thread.CurrentThread.ManagedThreadId},日志内容:暂时没有,日志级别:Warn,写入时间:{now.ToString()}\r\n";File.AppendAllText(_filePath, logContent);successCount++;}catch (Exception ex){failCount++;Console.WriteLine(ex.Message);}});});if (result.IsCompleted){stopWatch.Stop();Console.WriteLine($"Request Count:{logRequestNum}. Success Count:{successCount} Failed Count:{failCount},总耗时:{stopWatch.ElapsedMilliseconds/1000}秒");}}

        static string _filePath = @"C:\Users\zhengchao\Desktop\测试文件.txt";static void Main(string[] args){WriteLogAsync();Console.ReadKey();}/// <summary>/// 多线程异步写入文件/// </summary>static void WriteLogAsync(){var logRequestNum = 10000;//请求写入日志次数var successCount = 0;//执行成功次数var failCount = 0;//执行失败次数var stopWatch = Stopwatch.StartNew();//模拟100000次用户请求写入日志操作var result = Parallel.For(0, logRequestNum, i =>{SynchronizedFile.WriteFile(() =>{try{var now = DateTime.Now;var logContent = $"当前线程Id:{Thread.CurrentThread.ManagedThreadId},日志内容:暂时没有,日志级别:Warn,写入时间:{now.ToString()}\r\n";var utf8NoBom = new UTF8Encoding(false, true);//去掉Dom头using (StreamWriter writer = new StreamWriter(_filePath, true, utf8NoBom)){writer.WriteAsync(logContent);}successCount++;}catch (Exception ex){failCount++;Console.WriteLine(ex.Message);}});});if (result.IsCompleted){stopWatch.Stop();Console.WriteLine($"Request Count:{logRequestNum}. Success Count:{successCount} Failed Count:{failCount},总耗时:{stopWatch.ElapsedMilliseconds / 1000}秒");}}