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: @?=)}2=|?i
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CountBean.java c^WBB$v
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/* ?jm2|:
* CountData.java 8oH54bFp
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* Created on 2007年1月1日, 下午4:44 ?~Ed
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* To change this template, choose Tools | Options and locate the template under c_q y)N
* the Source Creation and Management node. Right-click the template and choose h16Nr x
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package com.tot.count; nkj'AH"2
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/** l<:E+lU
* JI,hy
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* @author .*f4e3
*/ #R PB;#{
public class CountBean { L0VR(
private String countType; ?HyioLO
int countId; e CUcE(
/** Creates a new instance of CountData */ ZWW8Hr
public CountBean() {} $K5s)!
public void setCountType(String countTypes){ =pOY+S|
this.countType=countTypes; *K.7Zf0
} [f(^vlK
public void setCountId(int countIds){ ~wg^>!E
this.countId=countIds; Q4:r$
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} 0a%ui2k
public String getCountType(){ 9S1V!Jp
return countType; 64>[pZF8
} w&cyGd D5
public int getCountId(){ gpvj'Ri7V
return countId; xa0%;nFKe
} TXl9c6
} c] R; IEf^.Z
/** Creates a new instance of CountCache */ :{Z^ _;Tf
public CountCache() {} p&l:937
public static void add(CountBean cb){ k $&A
if(cb!=null){ B9:0|i!!A`
list.add(cb); |?=1tS{iT
}
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} N|vJrye
} '+zsj0!A
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CountControl.java oA@^N4PD
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/*
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* CountThread.java += ~}PF
* HbDB?s<
* Created on 2007年1月1日, 下午4:57 ,!4_Uc
* 5c7a\J9>
* To change this template, choose Tools | Options and locate the template under qW >J-,61/
* the Source Creation and Management node. Right-click the template and choose #[yl;1)
* Open. You can then make changes to the template in the Source Editor. &>fd:16
*/ e"/X*xA
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package com.tot.count; w! 7/;VJ3d
import tot.db.DBUtils; dS=,. }
import java.sql.*; |c/rHEZ
/**
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* O_Q,!&*6
* @author *60)Vo.=
*/ y-#tU>P
public class CountControl{ gNQJ:!
private static long lastExecuteTime=0;//上次更新时间 }!Lr!eALr
private static long executeSep=60000;//定义更新间隔时间,单位毫秒 h!~yYNQ"
/** Creates a new instance of CountThread */ !:{_<