web 开发,周期任务是怎样实现的?大字段放数据库还是另存 txt 好? - V2EX
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bbhj3434

web 开发,周期任务是怎样实现的?大字段放数据库还是另存 txt 好?

  •  
  •   bbhj3434 Mar 18, 2014 3799 views
    This topic created in 4422 days ago, the information mentioned may be changed or developed.
    没完成多少个项目,所以很多东西都没有思路……
    web的周期任务比如每周定时清空数据,每月排行榜这些应该怎样实现?是把定时任务扔到系统计划or数据库计划?

    另:大字段(5000中文字,100w行左右)放数据库还是另存txt好?
    4 replies    1970-01-01 08:00:00 +08:00
    henices
        1
    henices  
       Mar 18, 2014
    Linux 想到crontab是比较自然的,Windows也有计划任务。
    MarsWang
        2
    MarsWang  
       Mar 18, 2014
    1、定期的任务事件一般都是写好脚本然后crontab定期执行,任务比较多的话会用一台单独的服务器去跑。

    2、关于数据存储,这个看场景吧。具体不太清楚。
    verfino
        3
    verfino  
       Mar 18, 2014
    定时任务一般都是仍crontab的吧

    数据存储,几百兆按行整理的数据可以放txt里,计算完压缩保存(有条件的话放SSD上计算)

    每月排行榜的话就按天计算,存储好需要的数据到数据表(按天,或者按小时),然后按月统计计算
    yakczh
        4
    yakczh  
       Mar 18, 2014
    txt

    行按日期, 列按指标存放, 空值可以用-来占位

    看数据粒度,如是是按天的话,全部存一个文件也有300多行

    如果是小时,分钟,可以根据月份,季度名字统一文件命名规则
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