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Checkpoint SQLite WAL off the request thread safely

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Disable wal_autocheckpoint and run PASSIVE checkpoints from one elected
writer process. Contenders start in console/rake (initializer), Puma
workers (including WEB_CONCURRENCY=auto), and Resque children, with
failover, capped error backoff, and tests for lock takeover.

Co-authored-by: Thomas Klemm <github@tklemm.eu>
This commit is contained in:
Cursor Agent
2026-10-07 18:53:19 +00:00
parent 6e312c6028
commit 88acc4e026
7 changed files with 389 additions and 1 deletions
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config/puma_dev.rb
+2
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@@ -1,5 +1,7 @@
require File.expand_path("../config/environment", File.dirname(__FILE__))
SqliteWalCheckpoint.start
Signal.trap :SIGPROF do
Thread.list.each do |t|
puts t