Quartz.net 实现单线程执行Job

使用Quartz.net的时候经常会遇到一种情况,就是job执行速度过慢,而Quartz.net默认也是并发执行的,这就导致一种情况,之前的job还没做完,第二个就开始了,在某些业务场景下这种情况容易造成数据错乱,那么这个时候就需要把执行改成单线程执行,解决起来很简单,就是在job类加注解[DisallowConcurrentExecutionAttribute]

具体实现方式如下,以abp vnext 实现的quartz.net为例子:

    [DisallowConcurrentExecutionAttribute]
    public class QueryWork : QuartzBackgroundWorkerBase
    {
        private IAppService _appService;
        public QueryWork(IAppService appService)
        {
            _appService = appService;
            JobDetail = JobBuilder.Create<QueryWork>().WithIdentity(nameof(QueryWork)).Build();
            Trigger = TriggerBuilder.Create().WithIdentity(nameof(QueryWork))
                .WithDailyTimeIntervalSchedule(s => s.WithIntervalInSeconds(5)).Build();
        }
        public async override Task Execute(IJobExecutionContext context)
        {
            await _appService.QueryAsync();
        }
    }

 

posted @ 2021-05-09 08:04  颗粒归仓  阅读(791)  评论(0编辑  收藏  举报