[bind10-dev] 转发: Should zonemgr refresh expired zones(Re: zonemgr / notify out questions)

[Likun Zhang]

> On 14 Sep 2010, at 05:10, Jerry wrote:
> >
> >> 19) Is random Refresh jitter defined in any specification? I see it
> >> uses between (zone_refresh_time - ((1 * zone_refresh_time) / 4)) and
> >> zone_refresh_time.
> > I defined the refresh jitter value according to BIND9, which is
suggested by
> > jinmei. Maybe we can improve it.
> 
> I see there as being two alternatives.  If "r" is the refresh time and "j"
the jitter
> value we could set it that the zone refreshes:
> 
> a) any time between r - j and r
> 
> or
> 
> b) any time between r - j and r + j
> 
> My own thought is that the latter is the most natural definition, as the
term jitter
> tends to imply a deviation about a mean.

Yeah, from the mean of jitter, the latter one is more natural, but my
concern is, it will delay zone refresh which may not user wants,

Like a meeting or check in time of company, we can arrive ahead or in time,
if you are late, what the boss will say? 

Likun