　定时任务调度问题，是一个老生常谈的问题。网上有许多定时任务调度的解决方案，以前主要是使用Window计划和Window服务来做任务定时执行，然后就开始使用定时任务调度框架Quartz.Net。Hangfire这个自带后台任务调度面板，可以在后台手动执行任务的神奇的任务调度框架。

　Hangfire是一个开源的.NET任务调度框架，提供了内置集成化的控制台，可以直观明了的查看作业调度情况，并且Hangfire不需要依赖于单独的应用程序执行（如：windows服务，window计划）。并且支持持久性存储。

最近在搞Hangfire任务，下面总结下几个设置

1、配置面板权限

     var filter = new BasicAuthAuthorizationFilter(            new BasicAuthAuthorizationFilterOptions            {                SslRedirect = false,                RequireSsl = false,                LoginCaseSensitive = false,                Users = new[]                {                        new BasicAuthAuthorizationUser                        {                            Login = System.Configuration.ConfigurationManager.AppSettings["user"],                               PasswordClear = System.Configuration.ConfigurationManager.AppSettings["pwd"]                        }                }            });
            var options = new DashboardOptions            {                AuthorizationFilters = new[] {                    filter                }            };
            app.UseHangfireDashboard("/hangfire", options);

2、已完成的job设置过期，防止数据无限增长

  public class SucceededStateExpireHandler : IStateHandler    {        public TimeSpan JobExpirationTimeout;
        public SucceededStateExpireHandler(int jobExpirationTimeout)        {            JobExpirationTimeout = TimeSpan.FromMinutes(jobExpirationTimeout);        }
        public string StateName => SucceededState.StateName;
        public void Apply(ApplyStateContext context, IWriteOnlyTransaction transaction)        {            context.JobExpirationTimeout = JobExpirationTimeout;        }
        public void Unapply(ApplyStateContext context, IWriteOnlyTransaction transaction)        {        }

3、设置工作的线程数

    app.UseHangfireServer(new BackgroundJobServerOptions { WorkerCount = int.Parse(System.Configuration.ConfigurationManager.AppSettings["WorkerCount"]) });

4、添加BackgroundJob

   try            {                BackgroundJob.Enqueue(() => CreateJob(info));            }            catch (Exception ex)            {                Logger.Default.Error("CreateJob失败 " + ex.ToString());            }            TextBuffer.WriteLine("Background job has been created.");

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开源的.NET定时任务组件Hangfire开发总结

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