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zodb的几个问题
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张沈鹏  
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 More options Mar 7 2008, 12:29 am
From: 张沈鹏 <zsp...@gmail.com>
Date: Thu, 6 Mar 2008 21:29:52 -0800 (PST)
Local: Fri, Mar 7 2008 12:29 am
Subject: zodb的几个问题
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1.
set又没有key.value,为什么还要分4种类型?
Oset和ISet不就够了吗?

2.
transaction的commit
和
conn=db.open()
然后
conn.sync()
有什么区别?
究竟哪一种是把东西写到磁盘
我都试过,但好像都没有写入磁盘,下一次再读取会丢数据

3.
OOBTree这种东西线程安全吗?
我现在是加锁读写的,有必要吗?


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Junyong Pan  
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 More options Mar 7 2008, 12:06 pm
From: "Junyong Pan" <panjuny...@gmail.com>
Date: Sat, 8 Mar 2008 01:06:44 +0800
Local: Fri, Mar 7 2008 12:06 pm
Subject: Re: zodb的几个问题
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2008/3/7 张沈鹏 <zsp...@gmail.com>:

> 1.
>  set又没有key.value,为什么还要分4种类型?
>  Oset和ISet不就够了吗?

>  2.
>  transaction的commit
>  和
>  conn=db.open()
>  然后
>  conn.sync()
>  有什么区别?
>  究竟哪一种是把东西写到磁盘
>  我都试过,但好像都没有写入磁盘,下一次再读取会丢数据

commit()就可以写入磁盘的，sync没有用过

>  3.
>  OOBTree这种东西线程安全吗?
>  我现在是加锁读写的,有必要吗?

--
潘俊勇

上海润普网络信息技术有限责任公司(http://www.zopen.cn)
中文Zope用户组(http://www.czug.org)


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