• 后台任务使用开源的Coravel
• 在后端AppWeb.cs中配置后台任务的Job

public static class AppWeb
{
    public static void AddApp(this IServiceCollection services, Action<AppInfo> action = null)
    {
        //...
        services.AddScheduler();
        services.AddTransient<YourTaskJob>(); //在此注入任务Job实例
    }

    public static void UseApp(this IServiceProvider provider)
    {
        provider.UseScheduler(scheduler =>
        {
            //此处配置任务的执行计划
            scheduler.Schedule<YourTaskJob>().EveryFiveSeconds();
        });
    }
}

• 添加后台任务Job类

class YourTaskJob : IInvocable
{
    public Task Invoke() => TaskHelper.RunAsync("业务类型", ExecuteAsync);

    private static Task<Result> ExecuteAsync(Database db, SysTask task)
    {
        // 这里是执行后台任务的逻辑
        return Result.SuccessAsync("执行成功！");
    }
}