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How to implement background service executing actions every hour?

C#  |  .NET  |  ASP.NET

There is often the necessity to perform some tasks periodically in the background, such as every hour or every 6 hours. Fortunately, you can easily create such a mechanism in your ASP.NET Core web application with a background service.

First, let's define a class representing the background service. Within it, you can specify frequency of actions, as well as write the code that will be executed cyclically, as presented below:

public class HourlyBackgroundService(IServiceProvider serviceProvider)
    : BackgroundService
    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
        using PeriodicTimer timer = new(TimeSpan.FromHours(1));
        while (await timer.WaitForNextTickAsync(stoppingToken))
            using IServiceScope scope = serviceProvider.CreateScope();
            using AppDbContext dbContext = 
            /* Database-related operations */

To start background service execution, you need to configure it in the Program.cs file, as follows:

WebApplicationBuilder builder = WebApplication.CreateBuilder(args); (...)
builder.Services.AddHostedService(); (...)
WebApplication app = builder.Build(); (...)

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