From 25480e837f1b11e4ddc7d22114b004c7d84a7292 Mon Sep 17 00:00:00 2001
From: Greg Heartsfield <scsibug@imap.cc>
Date: Thu, 22 Dec 2022 16:10:49 -0600
Subject: [PATCH] fix: do not block writers for more than 1 second during
 checkpoints

---
 src/db.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/db.rs b/src/db.rs
index b3cb497..a224231 100644
--- a/src/db.rs
+++ b/src/db.rs
@@ -689,8 +689,10 @@ pub async fn db_maintenance(pool: SqlitePool) {
             tokio::select! {
                     _ = tokio::time::sleep(Duration::from_secs(EVENT_MAINTENANCE_FREQ_SEC)) => {
                         if let Ok(mut conn) = pool.get() {
-                // set the busy timeout to a larger value (default is 5 seconds).
-                conn.busy_timeout(Duration::from_secs(60)).ok();
+                // the busy timer will block writers, so don't set
+                // this any higher than you want max latency for event
+                // writes.
+                conn.busy_timeout(Duration::from_secs(1)).ok();
                             debug!("running database optimizer");
                             optimize_db(&mut conn).ok();
                             debug!("running wal_checkpoint(TRUNCATE)");