Re: [Q]: Agent expiration and fetching

[Kevin Greiner <kevin.greiner@vignette.com>]

Xavier Maillard <zedek@gnu-rox.org> writes:

> On 13 oct 2004, Kevin Greiner wrote:
>
>> Xavier Maillard <zedek@gnu-rox.org> writes:
>> 
>> > Hello,
>> > 
>> > I want to ask something which tends to make me crazy.
>> > 
>> > I set the gnus-agent-expiration to enabled. It expires
>> > correctly but I sometimes, when 'J s'ing got old messages
>> > just downloaded again.
>> > 
>> > How can I prevent this from happening ?
>> 
>> Set gnus-agent-consider-all-articles to nil.
>
> Hmm:
>
> ,----[ C-h v gnus-agent-consider-all-articles RET ]
> | gnus-agent-consider-all-articles's value is nil
> | 
> | [back]
> `----

Now that is unfortunate.  You'll have to debug to figure this one out.
The critical function is gnus-agent-fetch-headers.  The only problem
is that with gnus-agent-consider-all-articles set to nil, the only
articles being fetched by the agent are unread articles.  That would
seem to exclude your old articles so...

>> > Subsidiary question: how can I cache all articles
>> > automatically ?
>> 
>> The cache and the agent are redundant in that both create
>> independent local copies of your articles. Are you sure that
>> you want to do this?
>
> Well, the goal is not to have redundant stuff but, as I
> experiment things, I would like to be sure I do not loose
> anything.
>
> So the main idea, for instance, is to enter *ALL* unread/unseen
> articles into the cache even if I already have fetched them in
> the agent.
>
> I tried this:
>
> ,----[ C-h v gnus-cache-enter-articles RET ]
> | gnus-cache-enter-articles's value is 
> | (ticked dormant unread unseen)
> | 
> | 
> | Classes of articles to enter into the cache.
> | 
> | You can customize this variable.
> | 
> | Defined in `gnus-cache'.
> | 
> | [back]
> `----
>
> But that doesn't work.
>
> Oh, and yes, I remove articles when read or expired from the
> cache off course :/
>
> What is wrong with this ?

Looking at the code, gnus-use-cache must be active (t).  The default
'passive will simply not do.  The cacheable filter,
gnus-cacheable-groups, must also be either set to null or a regexp
matching your group.
  
>> > And last, what is best to use: ticked/dormant articles or
>> > cached ? (given the fact I have almost all agentized).
>> 
>> Personally, I either set a group to never expire from the agent
>> (in which case I never cache those articles) or I expire after
>> a short time but use the cache for long term storage. Which I
>> do depends upon the percentage of articles that I expect to
>> keep in a certain group.
>
> Thank you for your feedback. There so many features I never ever
> have visited before, I am almost thinking I am n00b :/

Same here.

Kevin