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From: ludo@gnu.org (Ludovic Courtès)
To: Mathieu Othacehe <m.othacehe@gmail.com>
Cc: 27876-done@debbugs.gnu.org
Subject: [bug#27876] [PATCH v2 1/3] cuirass: Store new information in database to prepare new HTTP API integration.
Date: Sun, 10 Sep 2017 15:01:27 +0200	[thread overview]
Message-ID: <878thm907s.fsf@gnu.org> (raw)
In-Reply-To: <87lglomhxo.fsf@gmail.com> (Mathieu Othacehe's message of "Sat, 09 Sep 2017 09:48:15 +0200")

Heya Mathieu,

Mathieu Othacehe <m.othacehe@gmail.com> skribis:

>> With an autoincremented index, I suppose we might want to make sure that
>> ‘db-add-build’ does not add a new entry for a build that’s already in
>> the table.  WDYT?
>
> Yes we might, but looking for a build with the same
> derivation-evaluation-outputs before each build insertion will be an
> expensive operation (now that this tuple is no longer the primary key).

OK, but isn’t there a risk of recording the same set of derivations at
every evaluation?

Basically, between two subsequent evaluations, 99% of the derivations
are exactly the same (assuming an evaluation is triggered at each git
push, and each git push adds/modifies just a handful of packages).  If
we record new builds for these 99%, even though nothing has changed,
then that’s potentially bad, no?

Thanks,
Ludo’.

  reply	other threads:[~2017-09-10 13:02 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-30 10:07 [bug#27876] [PATCH] cuirass: add Hydra compatible HTTP API Mathieu Othacehe
2017-07-31 14:57 ` Ludovic Courtès
2017-08-01 19:48   ` Mathieu Othacehe
2017-08-02  9:22     ` Ludovic Courtès
2017-08-01 19:51 ` [bug#27876] [PATCH v2 1/3] cuirass: Store new information in database to prepare new HTTP API integration Mathieu Othacehe
2017-08-01 19:51   ` [bug#27876] [PATCH v2 2/3] cuirass: add Hydra compatible HTTP API Mathieu Othacehe
2017-09-08 16:00     ` Ludovic Courtès
2017-08-01 19:51   ` [bug#27876] [PATCH v2 3/3] cuirass: Add tests for new " Mathieu Othacehe
2017-09-08 16:01     ` Ludovic Courtès
2017-09-08 15:59   ` [bug#27876] [PATCH v2 1/3] cuirass: Store new information in database to prepare new HTTP API integration Ludovic Courtès
2017-09-08 19:13     ` bug#27876: " Mathieu Othacehe
2017-09-08 20:44       ` [bug#27876] " Ludovic Courtès
2017-09-09  7:48         ` Mathieu Othacehe
2017-09-10 13:01           ` Ludovic Courtès [this message]
2017-09-10 13:26             ` Mathieu Othacehe
2017-09-10 20:38               ` Ludovic Courtès

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