测试服务限时秒杀

import threading

class Inventory:
    def __init__(self, stock):
        self.stock = stock
        self.lock = threading.Lock()

    def purchase(self, quantity):
        with self.lock:
            if self.stock >= quantity:
                self.stock -= quantity
                return True
            else:
                return False

# 示例使用
inventory = Inventory(10)  # 初始库存为10

def handle_order(quantity):
    if inventory.purchase(quantity):
        print(f"成功购买 {quantity} 件商品")
    else:
        print("库存不足，购买失败")

# 模拟多个并发请求
threads = []
for i in range(15):
    t = threading.Thread(target=handle_order, args=(1,))
    threads.append(t)
    t.start()

for t in threads:
    t.join()

print(f"剩余库存: {inventory.stock}")