Background Services using hangfire #3943

11 Answer(s)

• 

  0

  berkansasmaz created 4 years ago

  Support Team .NET Developer

  Hello, I don't think this question is related to ABP but still, there is some information I want to share with you ✌️

  Firstly being wondering if this reduces resources utilization since my iis cpu and ram usage is high.

  Unfortunately, I don't know much about the ISS.

  Seems every time I run the project, a new recurring job is created , how can I avoid this ?

  Hangfire methods allow calling with a delay. For instance:

  BackgroundJob.Schedule(
      () => Console.WriteLine("Hello, world"),
      TimeSpan.FromDays(1));
  

  See more: https://docs.hangfire.io/en/latest/background-methods/calling-methods-with-delay.html

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• 

  0

  Dicky.tech@gmail.com created 4 years ago

  The issue is each time the app re starts it add a new recurring jobs instead of updating existing

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  0

  liangshiwei created 4 years ago

  Fullstack Developer

  Hi,

  I think you need background worker instead of background jobs

  https://docs.abp.io/en/abp/latest/Background-Workers-Hangfire

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  0

  Dicky.tech@gmail.com created 4 years ago

  Below is my class worker class and how am calling it

  public override void OnApplicationInitialization(ApplicationInitializationContext context)
  { 
  context.AddBackgroundWorkerAsync<SyncLeavePlans>();
  }
  

  using Microsoft.Extensions.DependencyInjection;
  using Microsoft.Extensions.Logging;
  using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Text;
  using System.Threading.Tasks;
  using Volo.Abp.BackgroundJobs;
  using Volo.Abp.BackgroundWorkers;
  using Volo.Abp.Domain.Repositories;
  using Volo.Abp.Modularity;
  using Volo.Abp.MultiTenancy;
  using Volo.Abp.Threading;
  using Volo.Saas.Tenants;
  using System.Linq;
  using System.Linq.Dynamic.Core;
  using System.Linq.Expressions; 
  using Volo.Abp.BackgroundWorkers.Hangfire;
  using Hangfire;
  using Volo.Abp.DependencyInjection;
  using Volo.Abp.Uow;
  using System.Threading;
  
  namespace API.Integrations
  {
      public interface ISyncLeavePlans : IHangfireBackgroundWorker
      {
      }    
  
      [DependsOn(
            typeof(AbpBackgroundWorkersModule),
            typeof(AbpMultiTenancyModule),
            typeof(AbpBackgroundJobsModule)
            )]
      [ExposeServices(typeof(ISyncLeavePlans))]
      public class SyncLeavePlans : HangfireBackgroundWorkerBase, ISyncLeavePlans
      { 
          [Obsolete]
          public SyncLeavePlans(       ) 
          {
              RecurringJobId = "ISyncLeavePlans";
              CronExpression = Cron.MinuteInterval(5);
          }
          [UnitOfWork]
          public override async Task DoWorkAsync(CancellationToken cancellationToken)
          {
              Logger.LogInformation("Starting:...");
               
              Logger.LogInformation("Completed:...");
          }
      }
  
  }
  

  After running the project, we see the below two jobs. Executed in milliseconds.

  

  

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• 

  0

  liangshiwei created 4 years ago

  Fullstack Developer

  Hi,

  • BackgroundJobWorker is a built-in worker in ABP that is used for BackgroundJob system.
  • TokenCleanupBackgroundWorkers is a built-in worker in ABP that is used to clean the old tokens.

  And the SyncLeavePlans works as expected.

  

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  0

  Dicky.tech@gmail.com created 4 years ago

  @liangshiwei as per the logs you've shared. Every seconds the recurring job is running and executing.

  It should every 5 minutes only. That's the issue.

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  0

  liangshiwei created 4 years ago

  Fullstack Developer

  Hi,

  Sorry but it's already every 5 minutes.

  11:40:08 Starting...
  11:40:08 Completed...
  ...
  
  11:45:08 Starting...
  11:45:08 Completed...
  

  

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  0

  Dicky.tech@gmail.com created 4 years ago

  Let me run some tests

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• 

  0

  liangshiwei created 4 years ago

  Fullstack Developer

  ok

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  0

  Dicky.tech@gmail.com created 4 years ago

  By the way am using this to push data to a 3rd party system. Is it the recommended way ?

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  0

  liangshiwei created 4 years ago

  Fullstack Developer

  Hi,

  I think there is no problem.

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