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: A$vCm
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CountBean.java }8J77[>/
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/* ?-[.H^]s~
* CountData.java 'eg?W_zu
* &g;4;)p*8
* Created on 2007年1月1日, 下午4:44 7bOL ,S
* ;hU56lfZ)X
* To change this template, choose Tools | Options and locate the template under 9v&{;
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* the Source Creation and Management node. Right-click the template and choose ?<VahDBS+A
* Open. You can then make changes to the template in the Source Editor. $$`E@\5P
*/ i2`i5&*
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package com.tot.count; aGvD
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/** M6U/.
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* os*QWSs
* @author }XVz?6
*/ "J^M@k\!
public class CountBean { 3Qmok@4e)
private String countType; ^,[V;3
int countId; 6N[XWyS
/** Creates a new instance of CountData */ d51l7't
public CountBean() {} 4SSq5Ve<
public void setCountType(String countTypes){ (r,tU(
this.countType=countTypes; d4<Ic#
} uV?[eiezD0
public void setCountId(int countIds){ R06q~ >
this.countId=countIds; sXxF5&AF0
} OO5k_J
public String getCountType(){ @*jd.a`
return countType; 7RNf)nz
} i9fK`:)
public int getCountId(){ %toxZ}OP
return countId; v&oE!s#
} C'3/B)u}l
} tAH,3Sz( /
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CountCache.java NFTEp0eP
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/* ]p>6r*/nw
* CountCache.java Hp;Dp!PLa
* JK0L&t<
* Created on 2007年1月1日, 下午5:01 {#YGor|
* $>zLa_cn|
* To change this template, choose Tools | Options and locate the template under =BO} hk
* the Source Creation and Management node. Right-click the template and choose p|VoIQY
* Open. You can then make changes to the template in the Source Editor. >i=^Mh-bm
*/ oyV@BHJO@
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package com.tot.count; 44axOk!G[/
import java.util.*; TIlBT{A<
/** b?`8-g
* <*u[<
* @author &scHyt
*/ Qk?;n F
public class CountCache { #7K&x.w$
public static LinkedList list=new LinkedList(); !Tuc#yFw
/** Creates a new instance of CountCache */ gf2<dEff
public CountCache() {} )u~LzE]{_
public static void add(CountBean cb){ Xao
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if(cb!=null){ s>Xx:h6m
list.add(cb); {'P7D4w
} H: q(T
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} [H$37Hx!
} OpeK-K
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CountControl.java F aO=<jYi
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/* 2@WF]*Z
* CountThread.java `h+ia/
* wlr/zquAE9
* Created on 2007年1月1日, 下午4:57 R:HF~}
* cd,)GF
* To change this template, choose Tools | Options and locate the template under H/m -$;cF3
* the Source Creation and Management node. Right-click the template and choose CbTYt6DC
* Open. You can then make changes to the template in the Source Editor. 6u^MfOc
*/ rxtp?|v9
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package com.tot.count; +BcJHNIB
import tot.db.DBUtils; v#i,pBj
import java.sql.*; 2OFrv=F
/** .} <$2.
* J5PXmL
* @author boAu
*/ NFpR jC?
public class CountControl{ ~*R"WiDtI
private static long lastExecuteTime=0;//上次更新时间 b#cXn4<