C# 简单Redis抢票功能

确保引用了StackExchange.Redis库

using StackExchange.Redis;
using System;
using System.Threading;

class Program
{
    static void Main(string[] args)
    {
        ConnectionMultiplexer redis = ConnectionMultiplexer.Connect("localhost");
        IDatabase db = redis.GetDatabase();

        int totalSeats = 10;
        int availableSeats;

        while (true)
        {
            // 获取当前可用座位数
            availableSeats = totalSeats - (int)db.HashLength("reservations");

            if (availableSeats <= 0)
            {
                Console.WriteLine("对不起，座位已满！");
                break;
            }

            Console.WriteLine($"当前可用座位数：{availableSeats}");

            Thread[] threads = new Thread[availableSeats];
            for (int i = 0; i < availableSeats; i++)
            {
                int seatNumber = i + 1;
                threads[i] = new Thread(() => TryReserveSeat(db, seatNumber));
                threads[i].Start();
            }

            foreach (var thread in threads)
            {
                thread.Join();
            }
        }

        redis.Close();
    }

    static void TryReserveSeat(IDatabase db, int seatNumber)
    {
        string username = Guid.NewGuid().ToString(); // 使用随机用户名
        string seatKey = $"seat{seatNumber}";

        if (db.HashExists("reservations", seatKey))
        {
            Console.WriteLine($"座位{seatNumber}已经被预订！");
        }
        else
        {
            if (db.HashSet("reservations", username, seatKey))
            {
                Console.WriteLine($"座位{seatNumber}由用户{username}预订成功！");
            }
            else
            {
                Console.WriteLine($"座位{seatNumber}预订失败！");
            }
        }
    }
}