本次主要分享一下使用redis做缓存队列,实现生产者消费者模式。
首先先来看一下redis提供的列表操作接口。像ListRightPush就和符合队列先进先出的原则。
然后围绕这个列表已下单为例简要实现生产者和消费者两端的模块。
生产者Controller
IApplicationContext ctx = ContextRegistry.GetContext();
/// <summary>
///
/// </summary>
public void Order()
{
OrderRequest order = new OrderRequest { Mobile = "15100000001", GoodsName = "抱枕", Price = 1, OrderId = "1111" };
Thread t1 = new Thread(new ParameterizedThreadStart(WriteQueue));
t1.Start(order);
order = new OrderRequest { Mobile = "15100000002", GoodsName = "坚果", Price = 2, OrderId = "1112" };
Thread t2 = new Thread(new ParameterizedThreadStart(WriteQueue));
t2.Start(order);
order = new OrderRequest { Mobile = "15100000003", GoodsName = "羽绒服", Price = 3, OrderId = "1113" };
Thread t3 = new Thread(new ParameterizedThreadStart(WriteQueue));
t3.Start(order);
order = new OrderRequest { Mobile = "15100000004", GoodsName = "阔腿裤", Price = 4, OrderId = "1114" };
Thread t4 = new Thread(new ParameterizedThreadStart(WriteQueue));
t4.Start(order);
order = new OrderRequest { Mobile = "15100000005", GoodsName = "芒果", Price = 5, OrderId = "1115" };
Thread t5 = new Thread(new ParameterizedThreadStart(WriteQueue));
t5.Start(order);
order = new OrderRequest { Mobile = "15100000006", GoodsName = "哑铃", Price = 6, OrderId = "1116" };
Thread t6 = new Thread(new ParameterizedThreadStart(WriteQueue));
t6.Start(order);
}
/// <summary>
///
/// </summary>
/// <param name="obj"></param>
private void WriteQueue(Object obj)
{
//通过spring容器创建对象
IBLLQueue BLLQueue = ctx.GetObject<BLLQueue>("IBLLQueue");
BLLQueue.WriteRedisQueue((OrderRequest)obj);
}
/// <summary>
/// 订单对象
/// </summary>
public class OrderRequest
{
/// <summary>
/// 订单Id
/// </summary>
public string OrderId { get; set; }
/// <summary>
/// 手机
/// </summary>
public string Mobile { get; set; }
/// <summary>
/// 物品名称
/// </summary>
public string GoodsName { get; set; }
/// <summary>
/// 价格
/// </summary>
public double Price { get; set; }
}
接口和实现类
public interface IBLLQueue
{
/// <summary>
///
/// </summary>
/// <returns></returns>
void WriteRedisQueue(OrderRequest order);
}
public class BLLQueue : IBLLQueue
{
private string key = "OrderQueue";
readonly static object _locker = new object();
/// <summary>
///
/// </summary>
/// <param name="WriteRedisQueue"></param>
public void WriteRedisQueue(OrderRequest order)
{
//添加到下单队列
lock (_locker)
{
var json = JsonHelper.SerializeObject(order);
var result = (int)RedisService.ListRightSet(key, json);
}
}
}
redis帮助类
/// <summary>
/// ListGet
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
public static RedisValue[] ListGet(string key)
{
return Db.ListRange(key);
}
/// <summary>
/// ListSet(尾)
/// </summary>
/// <param name="key"></param>
/// <param name="value"></param>
/// <returns></returns>
public static long ListRightSet(string key, string value)
{
return Db.ListRightPush(key, value);
}
/// <summary>
/// ListSet(头)
/// </summary>
/// <param name="key"></param>
/// <param name="value"></param>
/// <returns></returns>
public static long ListLeftSet(string key, string value)
{
return Db.ListLeftPush(key, value);
}
/// <summary>
/// ListRemove
/// </summary>
/// <param name="key"></param>
/// <param name="value"></param>
/// <returns></returns>
public static long ListRemove(string key, string value)
{
return Db.ListRemove(key, value);
}
/// <summary>
/// ListLength
/// </summary>
/// <param name="key"></param>
/// <param name="value"></param>
/// <returns></returns>
public static long ListLength(string key)
{
return Db.ListLength(key);
}
运行方法,通过可视化工具可看到redis列表结果:
2.通过控制台输出程序简单实现消费者模块。
main函数:
static void Main(string[] args)
{
Queue queue = new Queue();
queue.run();
}
订单消费者实现方法:
public class Queue
{
private string key = "OrderQueue";
private bool flg = true;
readonly static object _locker = new object();
public void run()
{
try
{
lock (_locker)
{
while (flg)
{
if (RedisService.ListLength(key) > 0)
{
Take();
}
flg = false;
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
public void Take()
{
var list = RedisService.ListGet(key).ToList();
foreach (var item in list)
{
var order = JsonHelper.DeserializeJsonToObject<OrderRequest>(item);
if (order != null)
{
Console.WriteLine("订单编号:" + (order.OrderId ?? "") + " 物品名称:" + (order.GoodsName ?? "") + " 手机:" + (order.Mobile ?? "") + " 价格:" + order.Price);
}
//移除队列
RedisService.ListRemove(key, item);
}
}
}
执行结果:
这样本次的案例就算小功告成。这边有简单使用spring.net。以前有使用过spring,年代久远,目前自己正在重新学习当中,往后再分享这一块学习心得。