From 4492b8e066570fd841fff5528100e8197645c85e Mon Sep 17 00:00:00 2001 From: Eric Wong Date: Sat, 24 Apr 2021 09:28:44 +0000 Subject: doc: lei_design_notes: add a bit on WAL usage --- Documentation/lei_design_notes.txt | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'Documentation') 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: -- cgit v1.2.3-24-ge0c7