private sub class_initialize() path=request.servervariables("url") path=left(path,instrRev(path,"/")) end sub
private sub class_terminate() end sub
public property get blEmpty '是否为空 if isempty(obj) then blEmpty=true else blEmpty=false end if end property
public property get valid '是否可用(过期) if isempty(obj) or not isDate(expireTime) then valid=false elseif CDate(expireTime)now then valid=false else valid=true end if end property
public property let name(str) '设置cache名 cacheName=str path obj=application(cacheName) expireTimeName=str "expires" path expireTime=application(expireTimeName) end property
public property let expires(tm) '重设置过期时间 expireTime=tm application.lock application(expireTimeName)=expireTime application.unlock end property
public sub add(var,expire) '赋值 if isempty(var) or not isDate(expire) then exit sub end if obj=var expireTime=expire application.lock application(cacheName)=obj application(expireTimeName)=expireTime application.unlock end sub
public property get value '取值 if isempty(obj) or not isDate(expireTime) then value=null elseif CDate(expireTime)now then value=null else value=obj end if end property
public sub makeEmpty() '释放application application.lock application(cacheName)=empty application(expireTimeName)=empty application.unlock obj=empty expireTime=empty end sub
public function equal(var2) '比较 if typename(obj)>typename(var2) then equal=false elseif typename(obj)="Object" then if obj is var2 then equal=true else equal=false end if elseif typename(obj)="Variant()" then if join(obj,"^")=join(var2,"^") then equal=true else equal=false end if else if obj=var2 then equal=true else equal=false end if end if end function
end class
dim content,myCache Set myCache = new Cache myCache.name="sofoisndoffo" '定义缓存名称 if myCache.valid then '如果缓存有效 content=myCache.value '读取缓存内容 else content="sosuo8.com测试" '大量内容，可以是非常耗时大量数据库查询记录集 myCache.add content,dateadd("n",1000,now) '将内容赋值给缓存，并设置缓存有效期是当前时间＋1000分钟 end if Response.Write(content) 'myCache.makeEmpty() set clsCache=nothing '释放对象 %>
