有时要为每一篇文章统计其点击次数,如果每一次浏览都要更新一次库的话,那性能在访问量很大的情况下,服务器的压力就会很大了,比较好一点的方法就是先将要更新的数据缓存起来,然后每隔一段时间再利用数据库的批量处理,批量更新库。源码如下: k61mRO
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CountBean.java v$w}UC%uf
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/* b*H*(}A6"'
* CountData.java \KzJNCOT
* +I3O/=)
* Created on 2007年1月1日, 下午4:44 maN2(1hz
* P|Gwt&
* To change this template, choose Tools | Options and locate the template under &GkD5b
* the Source Creation and Management node. Right-click the template and choose 4 Yv:\c
* Open. You can then make changes to the template in the Source Editor. LAH">E
*/ SOn)'!g
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package com.tot.count; XH@(V4J(.
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/** 9 M%Gnz
* G]N3OIw&8
* @author &1R#!|h1W
*/ ar6+n^pi0]
public class CountBean { |cgjn*a?M
private String countType; C*3St`2@9
int countId; tfZ@4%'
/** Creates a new instance of CountData */ qw?(^uZNW
public CountBean() {} (CY D]n
public void setCountType(String countTypes){ +:4>4=
this.countType=countTypes; 3ce$eZE
} `-OzjbM
public void setCountId(int countIds){ Ff(};$/&W
this.countId=countIds; vSC1n8 /
} \"))P1
public String getCountType(){ +ima$a0Zyt
return countType; *YL86R+U
} B+mxM/U[c
public int getCountId(){ @c'iT20
return countId; q7f`:P9~
} 0c`nk\vUy
} c)B3g.C4m
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CountCache.java xr7}@rq"U<
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/* ydo9 P5E
* CountCache.java rq4g~e!S
* Y0T :%
* Created on 2007年1月1日, 下午5:01 af %w|M
* AU}kIm_+
* To change this template, choose Tools | Options and locate the template under Nw$OJ9$L>
* the Source Creation and Management node. Right-click the template and choose IGQBTdPUa
* Open. You can then make changes to the template in the Source Editor. At?|[%<`
*/ )E*f30
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package com.tot.count; 7C0xKF
import java.util.*; PfRA\
/** *1{A'`.=\
* l`ZL^uT
* @author .P aDR |!
*/ Nr~!5XO
public class CountCache { Wc2&3p9 c
public static LinkedList list=new LinkedList(); @#OL{yMy
/** Creates a new instance of CountCache */ ,]7ouH$H}
public CountCache() {} HI 1T
public static void add(CountBean cb){ 7Q9Hk(Z9
if(cb!=null){ }DS%?6}Sy
list.add(cb); GIH{tr1:<
} iD G&