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: GAgTy
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CountBean.java i$E [@
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/* KCTX2eNN&h
* CountData.java %nY\"
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* Created on 2007年1月1日, 下午4:44 'M >m$cCMZ
* _aPAn|.
* To change this template, choose Tools | Options and locate the template under =lJ
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* the Source Creation and Management node. Right-click the template and choose "wOfs$w%s
* Open. You can then make changes to the template in the Source Editor. 4`#Q
*/ )k,n}
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package com.tot.count; nU_O|l9
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/** pjFO0h_Y
* vv
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* @author VQla.Y
*/ aL;!BlU8v
public class CountBean { z/{X{+Z
private String countType; \nZB@u;S
int countId; =Hd yra
/** Creates a new instance of CountData */ n6%`
public CountBean() {} DRQx5fgL
public void setCountType(String countTypes){ J |q(HpB
this.countType=countTypes; mtv8Bm=<
} @[3c1B6K
public void setCountId(int countIds){ S\TXx79PhC
this.countId=countIds; YGyv)\
} ps 3)d
public String getCountType(){ k|)fl l
return countType; ?A3L8^tR
} 1.!U{>$
public int getCountId(){ }9S}?R
return countId; R (~wSL*R>
} H\S)a FY[
} U7s$';y"%
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CountCache.java >u$8Z
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/* SL4?E<Jb
* CountCache.java qG6s.TcG
* sP(+Z^/
* Created on 2007年1月1日, 下午5:01 O{LCHtN
* '}_r/l]K
* To change this template, choose Tools | Options and locate the template under C27:tyV
* the Source Creation and Management node. Right-click the template and choose {]^Ixm-,f
* Open. You can then make changes to the template in the Source Editor. ?mg@z q8
*/ 1]7gYNzV"
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package com.tot.count; -G,}f\Cg
import java.util.*; lxhb)]c
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/** [%.v;+L
* /d3Jd.l!
* @author MoIh=rw
*/ *1dDs^D#|
public class CountCache { ~ skp}g]
public static LinkedList list=new LinkedList(); P"vrYom
/** Creates a new instance of CountCache */ 3xChik{
public CountCache() {} A;TP~xq\
public static void add(CountBean cb){ Nwi|>'\C
if(cb!=null){ yn62NyK
list.add(cb); &P?2H66s
} {6'Xz
} cszvt2BIg
} WUYI1Ij;
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CountControl.java 5W Ql?yMP
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/* D4=*yP
* CountThread.java X$Vi=f vt
* fW-C`x
* Created on 2007年1月1日, 下午4:57 mOE *[S)
* 3"y 6|e/5
* To change this template, choose Tools | Options and locate the template under !
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* the Source Creation and Management node. Right-click the template and choose z]G|)16
* Open. You can then make changes to the template in the Source Editor. s*izhjjX
*/ \/NF??k,jk
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package com.tot.count; @?3f`l
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import tot.db.DBUtils; \fA{ sehdL
import java.sql.*; 5f-b>=02
/** 3'4+3Xo
* @tH9$J*Y<
* @author 8+F5n!
*/ Kw
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public class CountControl{ 4yl{:!la
private static long lastExecuteTime=0;//上次更新时间 @5%&wC
private static long executeSep=60000;//定义更新间隔时间,单位毫秒 `S
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