From 9ca56bd910f91ee19898d9d6ed6394a1a878075c Mon Sep 17 00:00:00 2001
From: chylex <contact@chylex.com>
Date: Mon, 21 Mar 2022 00:36:29 +0100
Subject: [PATCH] Enable write-ahead log for SQLite connections to prevent
 blocking concurrent writes and reads

---
 app/Server/Database/Sqlite/Utils/SqliteConnectionPool.cs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/app/Server/Database/Sqlite/Utils/SqliteConnectionPool.cs b/app/Server/Database/Sqlite/Utils/SqliteConnectionPool.cs
index 4501123..14dfcb4 100644
--- a/app/Server/Database/Sqlite/Utils/SqliteConnectionPool.cs
+++ b/app/Server/Database/Sqlite/Utils/SqliteConnectionPool.cs
@@ -24,7 +24,14 @@ namespace DHT.Server.Database.Sqlite.Utils {
 			for (int i = 0; i < poolSize; i++) {
 				var conn = new SqliteConnection(connectionString);
 				conn.Open();
-				free.Add(new PooledConnection(this, conn));
+				
+				var pooledConn = new PooledConnection(this, conn);
+				
+				using (var cmd = pooledConn.Command("PRAGMA journal_mode=WAL")) {
+					cmd.ExecuteNonQuery();
+				}
+				
+				free.Add(pooledConn);
 			}
 
 			used = new List<PooledConnection>(poolSize);