C# Global.asax.cs 定时任务

定时执行更新Redis缓存操作

protected void Application_Start(object sender, EventArgs e)
{
    Timer timer = new Timer();
    timer.Enabled = true;
    timer.Interval = 3600000; //执行间隔时间,单位为毫秒; 这里实际间隔为1小时  
    timer.Start();
    timer.Elapsed += new System.Timers.ElapsedEventHandler(OrgCacheInterval); 
}

/// <summary>
/// 定时检测组织机构缓存是否需要更新
/// </summary>
/// <param name="source"></param>
/// <param name="e"></param>
public void OrgCacheInterval(object source, ElapsedEventArgs e)
{ 
    SystemService ser = new SystemService();
    ser.OrgCacheInterval();
}
/// <summary>
/// 组织机构缓存定时更新
/// </summary>
public void OrgCacheInterval()
{
    //不存在组织机构缓存或者时间戳时,更新
    if (!RedisCacheHelper.Exists("OrgList") || !RedisCacheHelper.Exists("OrgList:Time"))
    {
        UpdateAllOrgCache();
    }
    //存在时间戳时判断时间是否一致,不一致时更新
    else
    {
        //缓存时间戳
        string cacheTime = RedisCacheHelper.Get<string>("OrgList:Time");
        //数据库更新缓存时间
        string modifyTime = OrgDb.GetKeyLastModifyTime("OrgList", "");
        //时间戳标记不一致时更新
        if (cacheTime != modifyTime)
        {
            UpdateAllOrgCache();
        }
    }
}
/// <summary>
/// 获取键值更新时间
/// </summary>
/// <param name="db_key"></param>
/// <param name="lang_type"></param>
/// <returns></returns>
public string GetKeyLastModifyTime(string db_key, string lang_type)
{
    string time = string.Empty;
    try
    {
        string sql = string.Format(@"select * from sys_dbcache_time t where 1=1 and t.db_key='{0}' ", db_key);
        if (!string.IsNullOrEmpty(lang_type))
        {
            sql += string.Format(@" and t.lang_type='{0}' ", lang_type);
        }
        DataTable dt = OdpOracleHelper.Query(sql).Tables[0];
        if (dt != null && dt.Rows.Count > 0)
        {
            time = Convert.ToDateTime(dt.Rows[0]["op_modify_time"]).ToString("yyyy-MM-dd HH:mm:ss");
        }
        else
        {
            string _time = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
            string insertSql = string.Format(@"insert into sys_dbcache_time(db_key,lang_type,op_modify_time) 
                            values('{0}','{1}',to_date('{2}','yyyy-MM-dd HH24:MI:SS'))
", db_key, lang_type, _time); OdpOracleHelper.ExecuteSql(insertSql); time = _time; } } catch (Exception ex) { throw ex; } return time; }

 

posted @ 2019-01-16 14:52  Jackie Hao  阅读(1571)  评论(0编辑  收藏  举报