user/dev discussion of public-inbox itself
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From: Eric Wong <e@80x24.org>
To: meta@public-inbox.org
Subject: [PATCH 5/7] doc: lei_design_notes: add a bit on WAL usage
Date: Sat, 24 Apr 2021 09:28:44 +0000	[thread overview]
Message-ID: <20210424092846.726-6-e@80x24.org> (raw)
In-Reply-To: <20210424092846.726-1-e@80x24.org>

---
 Documentation/lei_design_notes.txt | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/lei_design_notes.txt b/Documentation/lei_design_notes.txt
index a5606c05..f1d2ab6f 100644
--- a/Documentation/lei_design_notes.txt
+++ b/Documentation/lei_design_notes.txt
@@ -18,3 +18,15 @@ SQLite, and Xapian across multiple processes.
 The coupling of IMAP and NNTP network latency to local storage
 is a current weakness of public-inbox-watch.  Therefore, -watch
 will likely adopt the daemon architecture of lei in the future.
+
+Read/write vs read-only storage
+-------------------------------
+
+public-inboxes are intended to be written and read by different
+Unix users.  Commonly, a single Unix user or group will write to
+a public-inbox, but the inbox will be served by a user with
+read-only permissions (e.g. "www-data" or "nobody").
+
+lei/store is intended to be read and written by a single user,
+thus we can rely on the Write-Ahead-Log journal of SQLite to
+improve performance: <https://sqlite.org/wal.html>

  parent reply	other threads:[~2021-04-24  9:28 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-24  9:28 [PATCH 0/7] lei sync preparations, "lei inspect" Eric Wong
2021-04-24  9:28 ` [PATCH 1/7] lei_input: drop outdated comment w.r.t. compression Eric Wong
2021-04-24  9:28 ` [PATCH 2/7] t/lei_to_mail: split "lei import" test $HOME directory Eric Wong
2021-04-24  9:28 ` [PATCH 3/7] URIimap: support ->uidvalidity and ->iuid Eric Wong
2021-04-24  9:28 ` [PATCH 4/7] net_reader: imap_each: add UIDVALIDITY to URL arg Eric Wong
2021-04-24  9:28 ` Eric Wong [this message]
2021-04-24  9:28 ` [PATCH 6/7] lei_mail_sync: for bidirectional keyword sync Eric Wong
2021-04-24  9:28 ` [PATCH 7/7] lei import: keep sync info for Maildir and IMAP folders Eric Wong

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