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: iD.0J/
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CountBean.java }iD$4\ L
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/* =E&2 4
* CountData.java {5U1`>
* 'BqrJfv
* Created on 2007年1月1日, 下午4:44 5.O-(eSa0&
* l8er$8S}
* To change this template, choose Tools | Options and locate the template under 8oa)qaG1
* the Source Creation and Management node. Right-click the template and choose ZyHIMo|
* Open. You can then make changes to the template in the Source Editor. /.7$`d
*/ wTHK=n\i
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package com.tot.count; Lwp-2`%
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/** ylkpYd
* y>@v>S
* @author RlU;v2Kch
*/ B{;11u
public class CountBean { mgo'MW\
private String countType; hK:#+hg,
int countId; CFD*g\g<*
/** Creates a new instance of CountData */ `oB' (
public CountBean() {} b;Hm\aK
public void setCountType(String countTypes){ :/>7$)+
this.countType=countTypes; >BJ2v=RA
} 3?.6K0L
public void setCountId(int countIds){ ^Yf3"D?&
this.countId=countIds; w/qQ(]n8
} uG2Xkj
public String getCountType(){ ARmu{cL
return countType; BXT80a\
} n"XdHW0
public int getCountId(){ Tq9,c#}&
return countId; #x, ]D
} 2ZU@>W
} ''$`;?t>
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CountCache.java 'Y hA
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/* h |s*i
* CountCache.java R'vdk<
* 3js)niT9u
* Created on 2007年1月1日, 下午5:01 E^oEG4X@
* 3Qqnw{*
* To change this template, choose Tools | Options and locate the template under -X`~;=m>U
* the Source Creation and Management node. Right-click the template and choose gcX5Q^`a=
* Open. You can then make changes to the template in the Source Editor. TvQWdX=
*/ p3V9ikyy
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package com.tot.count; @uQ%o%Ru6
import java.util.*; r$b:1 C~
/** !JT<(I2
* gUksO!7^1
* @author R g%R/p)C
*/ hp?ad
public class CountCache { &i4
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public static LinkedList list=new LinkedList();
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/** Creates a new instance of CountCache */ =@bXGMsV!
public CountCache() {} Q{%HW4lg
public static void add(CountBean cb){ Q.j-C}a
if(cb!=null){ DH}s1mNMP
list.add(cb); uU8*$+ "
} PFImqojHd
} h-z%C6
} +}Qv6s#
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CountControl.java {.s ]\C
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/* i;E9ZaW
* CountThread.java W)6U6
* OU0xZ=G
* Created on 2007年1月1日, 下午4:57 ,\|n=T,
* X !&"&n
* To change this template, choose Tools | Options and locate the template under NTv#{7q
* the Source Creation and Management node. Right-click the template and choose wo,""=l
* Open. You can then make changes to the template in the Source Editor. MuCQxzvkhf
*/ `77;MGg*
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package com.tot.count; OhA^UP01-
import tot.db.DBUtils; /ChJ~g "
import java.sql.*; jD&}}:Dj
/** k#l'ko/X
* G:E+s(x
* @author @oe3i
*/ "cnG/{($*
public class CountControl{ NTpz)R
private static long lastExecuteTime=0;//上次更新时间 EG Q1li'B
private static long executeSep=60000;//定义更新间隔时间,单位毫秒 d&GK