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: "lt <$.
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CountBean.java sRt7.fe
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/* `"=Hk@E
* CountData.java %6q82}# `
* ]faj j\
* Created on 2007年1月1日, 下午4:44 Ts.2\-+3
* myj/93p}`b
* To change this template, choose Tools | Options and locate the template under 20}HTV{v
* the Source Creation and Management node. Right-click the template and choose |Z>-<]p9g
* Open. You can then make changes to the template in the Source Editor. i"V.$|,
*/ JL,Y9G*]s
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package com.tot.count; M+:5gMB'
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/** XHA|v^
* _WNbuk0
* @author S]@;`_?m{
*/ 8oE`>Y
public class CountBean { J!om"h
private String countType; x{;{fMN1
int countId; 5$ik|e^:y
/** Creates a new instance of CountData */ Nk@-yZ@,8
public CountBean() {} Mst%]@TG
public void setCountType(String countTypes){ [0Xuo
this.countType=countTypes; GFT@Pqq
} _S) K+C|@
public void setCountId(int countIds){ R([zlw~B5
this.countId=countIds; /%cDX:7X
} b"X1
public String getCountType(){ a]Pi2:S
return countType; rfonM~3?'
} f:M^q ;
public int getCountId(){ '=;e#
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return countId; Sqi9'-%m
} 7@"X?uo%o
} N~]qQoj,
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CountCache.java %fF,Fnf2
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/* L--
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* CountCache.java r]Hrz'C`
* 3u
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* Created on 2007年1月1日, 下午5:01 6],?Y+_;)L
* f2c<-}wR
* To change this template, choose Tools | Options and locate the template under .QP`Qn6 (P
* the Source Creation and Management node. Right-click the template and choose fBh"
* Open. You can then make changes to the template in the Source Editor. X QLP|v;"
*/ U LS>v
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package com.tot.count; J3y_JoS
import java.util.*; #)}BY"C%
/** C] Fw*t
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* @author '|gsmO
*/ 6Mk#) ebM
public class CountCache { ; s(bd#Q
public static LinkedList list=new LinkedList(); 9gA@D%0
/** Creates a new instance of CountCache */ V06*qQ[
public CountCache() {} mW]dhY 3X
public static void add(CountBean cb){ 9iT9ZfaW
if(cb!=null){ A o*IshVh
list.add(cb); 2K_ QZ
} 6)sKg{H
} 4Yvz-aSyO
} c9c]1XJ
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CountControl.java IwYfs]-
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/* gH7 +#/
* CountThread.java u)h
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* @MibKj>o
* Created on 2007年1月1日, 下午4:57 jS]Saqd
* Xj]9/?B?
* To change this template, choose Tools | Options and locate the template under Zsapu1HoL\
* the Source Creation and Management node. Right-click the template and choose lrc%GU):
* Open. You can then make changes to the template in the Source Editor. k% \;$u=%
*/ #CLjQJ
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package com.tot.count; 5 v.&|[\k
import tot.db.DBUtils; A'CD,R+gR
import java.sql.*; o;wSG81
/** o.r D
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* @author Otu?J_ d3
*/ `=;}I@]zj)
public class CountControl{ r]LP=K1
private static long lastExecuteTime=0;//上次更新时间 *-*V>ntvT$
private static long executeSep=60000;//定义更新间隔时间,单位毫秒 nZ=[6?
/** Creates a new instance of CountThread */ >3g`6d
public CountControl() {} >A{e,&