秒杀的简单例子，实际应用中需要根据需求改进

using System;
using System.Threading;

class Program
{
    static void Main()
    {
        // 创建一个秒杀商品对象
        Product product = new Product("限时秒杀商品", 100);

        // 创建一个线程池，用于处理多线程秒杀请求
        ThreadPool threadPool = new ThreadPool(10);

        // 模拟多个用户同时发起秒杀请求
        for (int i = 0; i < 100; i)
        {
            int userId = i;
            threadPool.Enqueue(() =>
            {
                Console.WriteLine($"用户{userId}发起秒杀请求");
                if (product.Seckill(userId))
                {
                    Console.WriteLine($"用户{userId}秒杀成功");
                }
                else
                {
                    Console.WriteLine($"用户{userId}秒杀失败，商品已售罄");
                }
            });
        }

        // 等待线程池中的所有任务完成
        threadPool.WaitAll();

        Console.WriteLine($"商品剩余库存：{product.Stock}");
    }
}

class Product
{
    private string name;
    private int stock;

    public Product(string name, int stock)
    {
        this.name = name;
        this.stock = stock;
    }

    public bool Seckill(int userId)
    {
        if (stock > 0)
        {
            stock--;
            Console.WriteLine($"用户{userId}秒杀成功，商品剩余库存：{stock}");
            return true;
        }
        else
        {
            Console.WriteLine($"用户{userId}秒杀失败，商品已售罄");
            return false;
        }
    }
}