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- Path: sparky!uunet!micro-c!eastwind!chorn
- From: chorn@eastwind.mcds.com (Christopher Horn)
- Newsgroups: comp.bbs.waffle
- Subject: Re: News/mail reader
- Message-ID: <30HmuB2w165w@eastwind.mcds.com>
- Date: Sat, 21 Nov 92 23:28:25 EST
- References: <aoLiuB6w165w@willard.UUCP>
- Organization: The East Wind +1 201 875 7063
- Lines: 69
-
- dawson@willard.UUCP writes:
-
- [initial argument deleted]
-
- > Ok, let's have a counter example. Supposing files are sorted by creation
- > date/time (as would apparently be the case with your technique). Suppose
- > there were no new articles, and one was expired. The users' join files
- > are now out of sync:
- >
- > Before unbatching : 1, 2, 3, 4, 5
- > After unbatching : 1, 2, 3, 4
-
- Suppose that the files are not sorted by time/date, only resequenced.
- (Renumbered might be a better term)
-
- Before resequence : 1, 2, 3, 4, 5
- Dupes killed : 1, 2, 4, 5
- After resequence : 1, 2, 3, 4
-
- No join files are out of sync. I think this is what Kevin meant.
-
- > -----
- > Suppose there was one new article, and one was expired. No change to the
- > users' join files, but it now points one too high:
- >
- > Before unbatching : 1, 2, 3, 4, 5
- > After unbatching : 1, 2, 3, 4, 5
-
- You seem to be thinking they are numbered from 1 up, which is not really
- the case. Take the lowest numbered file in the directory as the base.
-
- Before unbatching : 1, 2, 3, 4, 5
- After resequence : 2, 3, 4, 5, 6 (as per the expire one, add one)
-
- This works because the lowest numbered files are also the oldest and should
- be the first removed by an expire program (assuming my understanding of how
- expire programs expire news...)
-
- > > Sounds rather simple to me.
- >
- > Too simple, maybe? I think I'll just avoid re-sequencing my articles.
-
- Yes and no. Simple to do, and users don't wonder why articles jump from
- 1856 to 1858, etc.. But, bad because :
-
- 1. The INITIAL kill dupes, resequence will screw up the pointers
- no matter what you do. So the first time penalty is high if you
- have many users.
- 2. You have to kill dupes, batch for downstream sites, and then
- do the resequence seperately for it to work right.
-
- Also note for it to work right when getting news from multiple sites,
- you have to search the article list from the oldest to the newest. If
- you kill the dupe that is older, a user may have read it, and when
- resequencing will mess up their join file.
-
- > How does re-sequencing enhance the general operation of Waffle?
-
- Aesthetic reasons?
-
- > --
- > dawson@willard.UUCP (Willard Dawson)
- > gatech!vdbsan!willard!dawson
- > emory!slammer!willard!dawson
- > Willard's House BBS, Atlanta, GA -- +1 (404) 664 8814
-
- ---
- Christopher Horn | "We're all caught in a state of decay..."
- chorn@eastwind.mcds.com | The East Wind +1 201 875 7063
-