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: ,OFr]74\
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CountBean.java s 17gi,"X
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/* YVV $g-D}
* CountData.java
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* 5oy MR_yl
* Created on 2007年1月1日, 下午4:44 xI),0db
* &7nfTc
* To change this template, choose Tools | Options and locate the template under /
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* the Source Creation and Management node. Right-click the template and choose Z8_gI[Zn
* Open. You can then make changes to the template in the Source Editor. ee?Mo`
*/ rnr8t]
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package com.tot.count; FQ ^^6Rl
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/** |>V>6%>vK6
* 'r <BaL
* @author dWWkO03|
*/ 1s\hJATfz
public class CountBean { lNPbU ~k
private String countType; OmuZ0@.
int countId; DG
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/** Creates a new instance of CountData */ <^Nj~+G'
public CountBean() {} Wb(0Szk;
public void setCountType(String countTypes){ &\br_
this.countType=countTypes; $7
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} xR%ayT.
public void setCountId(int countIds){ ="eum7
this.countId=countIds; ]ZATER)jq
} L2A#OZZu
public String getCountType(){ &H>dE]Hq,
return countType; I,uu>-
} c&W.slE6
public int getCountId(){ 7VBw@Rh
return countId; 8-l Y6M\R\
} 51'SA
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} 'a[|}nJ3
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CountCache.java [|Pe'?zkf
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/* />7/S^
* CountCache.java =KD*+.'\/
* 6b)UoJxj
* Created on 2007年1月1日, 下午5:01 1g.9R@Kc$
* \gXx{rLW
* To change this template, choose Tools | Options and locate the template under 1qN9bwRO
* the Source Creation and Management node. Right-click the template and choose *\vc_NP]
* Open. You can then make changes to the template in the Source Editor. 3k0%H]wt
*/ bj^m<}
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package com.tot.count; *0zH5c
import java.util.*; ><7`$ 2Or
/** zSXC
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* @author Qeog$g.HI
*/ *G=AhH$t
public class CountCache { c'qM$KN9G
public static LinkedList list=new LinkedList(); L`
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/** Creates a new instance of CountCache */ B.WkHY%/
public CountCache() {} j( :A
public static void add(CountBean cb){ ?d)|vX3Uf
if(cb!=null){ !r
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list.add(cb); Qq`\C0RZ
} /Q_\h+`
} RV(z>XM
} m~B=C>r}t
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CountControl.java $O-, :<HY
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/* Q7%#3ML
* CountThread.java 8hp]+k_y
* YTh4&wm
* Created on 2007年1月1日, 下午4:57 L?(rv.lb
* Bb`^,?m
* To change this template, choose Tools | Options and locate the template under mjHY-lK
* the Source Creation and Management node. Right-click the template and choose A UV$ S2
* Open. You can then make changes to the template in the Source Editor. ^w\uOd`
*/ d(Ou\7
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package com.tot.count; OK}"|:hrd
import tot.db.DBUtils; F#wa)XH
import java.sql.*; q Q8l8
/** 5al{[mi
* Shd,{Z)-Tg
* @author }YO}LQ-|
*/ w}b+vh^3Wy
public class CountControl{ 6vA5;a@
private static long lastExecuteTime=0;//上次更新时间 ;N|>pSzmL
private static long executeSep=60000;//定义更新间隔时间,单位毫秒 <k5~z(
/** Creates a new instance of CountThread */ RJ44o>L4O
public CountControl() {} xwH`alu
public synchronized void executeUpdate(){ RGLqn{<