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: dx?njR
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CountBean.java ~d#;r5>
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/* )o'U0rAx|a
* CountData.java &"H<+>`
* x9o^9QJh
* Created on 2007年1月1日, 下午4:44 xJH9qc ME
* @cTZ`bg
* To change this template, choose Tools | Options and locate the template under .^N#|hp^
* the Source Creation and Management node. Right-click the template and choose OCOO02Wq1
* Open. You can then make changes to the template in the Source Editor. mb*h73{{
*/ +N(YR3
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package com.tot.count; 1A/c/iC
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/** I$6
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* (zTI)EV
* @author =
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*/ 2cX"#."5p
public class CountBean { O.up%'%,
private String countType; HBga'xJ
int countId; ,0<F3h
/** Creates a new instance of CountData */ X?}GPA4 W
public CountBean() {} $vbAcWj
public void setCountType(String countTypes){ g%q?2Nv
this.countType=countTypes; Qdx`c^4m
} X5oW[
public void setCountId(int countIds){ 3EW f|6RI
this.countId=countIds; UN
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} 2Fp]S
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public String getCountType(){ 6t mNfI34
return countType; _F/lY\vm
} E_gDwWot
public int getCountId(){ m|cWX"#g
return countId; b\|p
} "/K&qj
} w<F;&';@h
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CountCache.java f w>Gx9
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/* }$k`[ivBx(
* CountCache.java eze(>0\f
* fe9& V2Uu
* Created on 2007年1月1日, 下午5:01 luz%FY:
* [|;Zxb:
* To change this template, choose Tools | Options and locate the template under f$S
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* the Source Creation and Management node. Right-click the template and choose +8vzkfr3It
* Open. You can then make changes to the template in the Source Editor. 7Ae,|k
*/ g$-D?~(Z
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package com.tot.count; F6GZZKj
import java.util.*; m[Ac'la
/** !wb~A0m
* xdBZ^Q
* @author 5bznM[%xO
*/ d
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public class CountCache { LX?r=_\
public static LinkedList list=new LinkedList(); 0*:hm%g
/** Creates a new instance of CountCache */ }v$=mLy
public CountCache() {} eN?P) ,
public static void add(CountBean cb){ $E_vCB_
if(cb!=null){ kcz#8K]~
list.add(cb); at(p,+ %
} )! *M
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} ):\{n8~
} RW PdS
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CountControl.java ,vdP
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/* B[_b J
*
* CountThread.java >0+|0ba
* v7OV;ea$
* Created on 2007年1月1日, 下午4:57 .fh?=B[o#
* M^JZ]W(
* To change this template, choose Tools | Options and locate the template under dVGUhXN6
* the Source Creation and Management node. Right-click the template and choose *=If1qZs
* Open. You can then make changes to the template in the Source Editor. sriq(A
*/ nh&<fnh
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package com.tot.count; '%RK KA
import tot.db.DBUtils; I~]mX;
import java.sql.*; MbF e1U]B
/** #|_UA}Y
* AW;)_|xM
* @author F#bo4'&>@
*/ 68GGS`&
public class CountControl{ dUtIAh-j
private static long lastExecuteTime=0;//上次更新时间 -Tkd@
private static long executeSep=60000;//定义更新间隔时间,单位毫秒 Y&