From 0f2809cb8d20f3554e419ee595e4ca7515fcb69b Mon Sep 17 00:00:00 2001
From: Yiorgis Gozadinos <ggozadinos@gmail.com>
Date: Fri, 1 Aug 2025 09:07:31 +0200
Subject: [PATCH] Use Write-Ahead Logging jorunaling mode for SQLite
 concurrency

---
 src/haiku/rag/store/engine.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/haiku/rag/store/engine.py b/src/haiku/rag/store/engine.py
index 7e746bc7..612622ca 100644
--- a/src/haiku/rag/store/engine.py
+++ b/src/haiku/rag/store/engine.py
@@ -37,6 +37,11 @@ class Store:
         db = sqlite3.connect(self.db_path)
         db.enable_load_extension(True)
         sqlite_vec.load(db)
+
+        # Enable WAL mode for better concurrency (skip for in-memory databases)
+        if self.db_path != ":memory:":
+            db.execute("PRAGMA journal_mode=WAL")
+
         self._connection = db
         existing_tables = [
             row[0]