【发布时间】：2022-08-02 21:33:34
【问题描述】：
我是 Redis 的新手。我已经实现了一个具有GET, SET, DELETE and ISKEYPRESENT 方法的类。以下是我班级的代码：
static ConnectionMultiplexer redisConnection = ConnectionMultiplexer.Connect(\"connectionstring\");
static readonly IDatabaseAsync dbConnection = redisConnection.GetDatabase();
public static async Task SetRecordAsync<T>(string recordId, T data, TimeSpan? timeSpan = null)//default 30 mins
{
var jsonData = JsonSerializer.Serialize(data);
if (timeSpan.HasValue)
{
await dbConnection.StringSetAsync(recordId, jsonData, timeSpan);
}
else
{
timeSpan = TimeSpan.FromMinutes(30);
await dbConnection.StringSetAsync(recordId, jsonData, timeSpan);
}
}
public static async Task<T> GetValueAsync<T>(string recordId)
{
var data = await dbConnection.StringGetAsync(recordId);
var jsonData = data.ToString();
if (jsonData is null)
{
return default(T);
}
return JsonSerializer.Deserialize<T>(jsonData);
}
public static async Task DeleteValueAsync(string recordId)
{
await dbConnection.KeyDeleteAsync(recordId);
}
public static async Task<bool> IsKeyNull(string recordId)
{
var value = await dbConnection.StringGetAsync(recordId);
var isNull = value.IsNullOrEmpty ? true : false;
return isNull;
}
但我不断收到这个错误，我无法理解它想说什么：
StackExchange.Redis.RedisConnectionException
HResult=0x80131500
Message=No connection is active/available to service this operation: GET Order; A blocking operation was interrupted by a call to WSACancelBlockingCall, mc: 1/1/0, mgr: 10 of 10 available, clientName: ASR-PC, IOCP: (Busy=2,Free=998,Min=4,Max=1000), WORKER: (Busy=1,Free=8190,Min=4,Max=8191), v: 2.1x.58.3xyz
Source=StackExchange.Redis
StackTrace:
at StackExchange.Redis.ConnectionMultiplexer.ThrowFailed[T](TaskCompletionSource`1 source, Exception unthrownException) in /_/src/StackExchange.Redis/ConnectionMultiplexer.cs:line 2777
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at RedisCache.DistributedCacheExtensions.<IsKeyNull>d__4.MoveNext() in RedisCache\\DistributedCacheExtensions.cs:line 67
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at BusinessLogic.Services.Order.OrderService.GetOnlineOrderCount(Int32 storeId) in OrderService.cs:line 1846
at GetOnlineOrderCount(Int32 storeId) in Api\\Controllers\\Order\\OrderController.cs:line 443
at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.<>c__DisplayClass10.<GetExecutor>b__9(Object instance, Object[] methodParameters)
at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.Execute(Object instance, Object[] arguments)
at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ExecuteAsync(HttpControllerContext controllerContext, IDictionary`2 arguments, CancellationToken cancellationToken)
Inner Exception 1:
RedisConnectionException: SocketFailure on windows.net:6380/Subscription, Initializing/NotStarted, last: NONE, origin: ConnectedAsync, outstanding: 0, last-read: 10s ago, last-write: 10s ago, keep-alive: 60s, state: Connecting, mgr: 10 of 10 available, last-heartbeat: never, global: 10s ago, v: 2.x.58.3xyz
Inner Exception 2:
IOException: Unable to read data from the transport connection: A blocking operation was interrupted by a call to WSACancelBlockingCall.
Inner Exception 3:
SocketException: A blocking operation was interrupted by a call to WSACancelBlockingCall
我的 redis 连接字符串如下所示：
windows.net:6380,密码=xyz=,ssl=True,abortConnect=False,connectTimeout=10000,connectRetry=8,syncTimeout=3000
-
那大概意味着它无法连接 - 尝试删除
abortConnect=False并查看它是否在Connect/ConnectAsync期间为您提供更有用的错误；另外-尝试将文本编写器作为Connect/ConnectAsync的log参数传递，这可以向您展示它在做什么 -
顺便说一句：对于
IsKeyNull：请注意，redis 没有null的概念，所以您在这里真正测试的是“它是否存在？” - 为此：KeyExists(...)更有效