调整为每次只上报一次，貌似多条编解码有点问题

src/DotXxlJob.Core/Config/XxlJobExecutorOptions.cs

@@ -52,5 +52,8 @@ namespace DotXxlJob.Core.Config
         /// </summary>
         public int LogRetentionDays { get; set; } = 30;
 
+
+        public int CallBackInterval { get; set; } = 500; //回调时间间隔 500毫秒
+
     }
 }

src/DotXxlJob.Core/Internal/Constants.cs

@@ -31,7 +31,7 @@ namespace DotXxlJob.Core
 
         public const int MaxCallbackRetryTimes = 10;
         //每次回调最多发送几条记录
-        public const int MaxCallbackRecordsPerRequest = 20;
+        public const int MaxCallbackRecordsPerRequest =5;
         public static TimeSpan CallbackRetryInterval = TimeSpan.FromSeconds(600);
 
         //Admin集群机器请求默认超时时间

src/DotXxlJob.Core/Queue/CallbackTaskQueue.cs

@@ -22,6 +22,8 @@ namespace DotXxlJob.Core.Queue
 
         private bool _isRunning;
 
+        private int _callbackInterval;
+
         private Task _runTask;
         public CallbackTaskQueue(AdminClient adminClient,IJobLogger jobLogger,IOptions<XxlJobExecutorOptions> optionsAccessor
             , ILoggerFactory loggerFactory)
@@ -29,6 +31,8 @@ namespace DotXxlJob.Core.Queue
             _adminClient = adminClient;
             _jobLogger = jobLogger;
 
+            _callbackInterval = optionsAccessor.Value.CallBackInterval;
+
             _retryQueue = new RetryCallbackTaskQueue(optionsAccessor.Value.LogPath,
                 Push,
                 loggerFactory.CreateLogger<RetryCallbackTaskQueue>());
@@ -65,7 +69,10 @@ namespace DotXxlJob.Core.Queue
                 while (!_stop)
                 {
                     await DoCallBack();
-                    await Task.Delay(TimeSpan.FromSeconds(3));
+                    if (taskQueue.IsEmpty)
+                    {
+                        await Task.Delay(TimeSpan.FromMilliseconds(_callbackInterval));
+                    }                    
                 }
                 _logger.LogDebug("end to callback");
                 _isRunning = false;
@@ -77,20 +84,17 @@ namespace DotXxlJob.Core.Queue
         {
             List<HandleCallbackParam> list = new List<HandleCallbackParam>();
             
-            while (list.Count < Constants.MaxCallbackRecordsPerRequest && taskQueue.TryDequeue(out var item))
+            if(!taskQueue.TryDequeue(out var item))
-            {
-                list.Add(item);
-            }
-
-            if (list.Count == 0)
             {
                 return;
             }
 
+            list.Add(item);
+
             ReturnT result;
             try
             {
-                result = await _adminClient.Callback(list);
+                result = await _adminClient.Callback(list).ConfigureAwait(false);
             }
             catch (Exception ex){
                 _logger.LogError(ex,"trigger callback error:{error}",ex.Message);

src/DotXxlJob.Core/Queue/JobTaskQueue.cs

@@ -10,7 +10,6 @@ namespace DotXxlJob.Core
 {
     public class JobTaskQueue:IDisposable
     {
-        private readonly ITaskExecutor _executor;
         private readonly IJobLogger _jobLogger;
         private readonly ILogger<JobTaskQueue> _logger;
         private readonly ConcurrentQueue<TriggerParam> TASK_QUEUE = new ConcurrentQueue<TriggerParam>();
@@ -19,12 +18,12 @@ namespace DotXxlJob.Core
         private Task _runTask;
         public JobTaskQueue(ITaskExecutor executor,IJobLogger jobLogger,ILogger<JobTaskQueue> logger)
         {
-            this._executor = executor;
+            this.Executor = executor;
             this._jobLogger = jobLogger;
             this._logger = logger;
         }
 
-        public ITaskExecutor Executor => this._executor;
+        public ITaskExecutor Executor { get; }
 
 
         public event EventHandler<HandleCallbackParam> CallBack;
@@ -122,7 +121,7 @@ namespace DotXxlJob.Core
                            
                            _jobLogger.Log("<br>----------- xxl-job job execute start -----------<br>----------- Param:{0}" ,triggerParam.ExecutorParams);
                            
-                           result = await _executor.Execute(triggerParam);
+                           result = await Executor.Execute(triggerParam);
                            
                            _jobLogger.Log("<br>----------- xxl-job job execute end(finish) -----------<br>----------- ReturnT:" + result.Code);
                        }