From 3abac991f0877fc4d36dcb9c01ef5c23d6f70e28 Mon Sep 17 00:00:00 2001
From: JustMe <mr.toing@outlook.com>
Date: Fri, 2 Oct 2026 11:12:05 +0800
Subject: [PATCH] fix(storage): defer concurrent SQLite read transactions

---
 server/src/WebDrop.Storage/SqliteChannelStore.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/server/src/WebDrop.Storage/SqliteChannelStore.cs b/server/src/WebDrop.Storage/SqliteChannelStore.cs
index 84ddf2a..ca8951c 100644
--- a/server/src/WebDrop.Storage/SqliteChannelStore.cs
+++ b/server/src/WebDrop.Storage/SqliteChannelStore.cs
@@ -38,7 +38,8 @@ public sealed class SqliteChannelStore : IResourceStore, IDisposable
     {
         using var conn = Open();
         // 显式事务让一次 Read 内的多条查询看到同一份快照
-        using var tx = conn.BeginTransaction();
+        // 读事务延迟到首次访问时才取快照，避免并发读预检抢占 SQLite 写锁。
+        using var tx = conn.BeginTransaction(deferred: true);
         return action(new SqliteTx(conn));
     }