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: }R`8h&J
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CountBean.java Ly^E& ,)
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/* 5\uNEs$T
* CountData.java @)
* L=d$"Q
* Created on 2007年1月1日, 下午4:44 Sv.KI{;v$
* \z2vV+f
* To change this template, choose Tools | Options and locate the template under M#=Y~PU
* the Source Creation and Management node. Right-click the template and choose fy9uLl}h
* Open. You can then make changes to the template in the Source Editor. vad|Rp l
*/ iYkRo>3!QX
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package com.tot.count; 60~v
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/** OpYmTep#T\
* -sP9E|/:'3
* @author ^/G?QR
*/ 8r5xs-
public class CountBean { 5fU!'ajaN7
private String countType; )URwIe{
int countId; wG_4$kyj
/** Creates a new instance of CountData */ (:ZPt(1
public CountBean() {} EJO.'vQ
public void setCountType(String countTypes){ 4;?1Kb#
this.countType=countTypes; Y3D3.T6Q
} D 5=C^`$2
public void setCountId(int countIds){ |p;4dL
this.countId=countIds; fwRGT|":B
} oz Vpfs
public String getCountType(){ *^n^nnCwp
return countType; 7TP$
} #g,H("Qy({
public int getCountId(){ [`q.A`Fd
return countId; bSQ_"
} Lt>?y&CcQ
} "K8nxnq
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CountCache.java yxqTm%?y
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/* MY&<)|v\
* CountCache.java wbBE@RU>!
* C2NzP & FD
* Created on 2007年1月1日, 下午5:01 QDP-E[
* SzRL}}I
* To change this template, choose Tools | Options and locate the template under 2%bhW,?I
* the Source Creation and Management node. Right-click the template and choose :g&>D#{
* Open. You can then make changes to the template in the Source Editor. '=$TyiU
*/ MdLj,1_T
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package com.tot.count; cnbo+U
import java.util.*; 9 _eS`,'
/** =+`D
* 'wa g |-
* @author *<w3" iq
*/ o.v2z~V
public class CountCache { #sL/y
public static LinkedList list=new LinkedList(); 0xv\D0
/** Creates a new instance of CountCache */ Tu==49
public CountCache() {} @sN^BX`z
public static void add(CountBean cb){ E{<?l 7t
if(cb!=null){ eVTO#R*'|
list.add(cb); )ukF3;Gt
} rYbCOazr
} *jGPGnSo
} (yfXMp,x
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CountControl.java Kf|0*c
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/* '\@WN]
* CountThread.java hUBF/4s\
* _'&k#Q
* Created on 2007年1月1日, 下午4:57 Rb?~ Rs\
* y!F:m=x<
* To change this template, choose Tools | Options and locate the template under |l$
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* the Source Creation and Management node. Right-click the template and choose f]c<9Q>*
* Open. You can then make changes to the template in the Source Editor. tO7I&LNE
*/ bZu$0IG
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package com.tot.count; 5|5=Y/
import tot.db.DBUtils; ad9EG#mD#
import java.sql.*; !f@XDW&R
/** WBa /IM
* xwi!:PAf,o
* @author R<>tDwsZGa
*/ z[*zuo
public class CountControl{ KA?v.s
private static long lastExecuteTime=0;//上次更新时间 &