From b7c5639a9dbe48e6b43e3b8dd858927c9399e980 Mon Sep 17 00:00:00 2001
From: Taloth Saldono <Taloth@users.noreply.github.com>
Date: Sun, 11 Mar 2018 19:38:47 +0100
Subject: [PATCH] Speed up sqlite3 initialization by disabling unused features.

---
 src/NzbDrone.Core/Datastore/DbFactory.cs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/NzbDrone.Core/Datastore/DbFactory.cs b/src/NzbDrone.Core/Datastore/DbFactory.cs
index d2a239d6d..e49df1c21 100644
--- a/src/NzbDrone.Core/Datastore/DbFactory.cs
+++ b/src/NzbDrone.Core/Datastore/DbFactory.cs
@@ -27,10 +27,20 @@ namespace NzbDrone.Core.Datastore
 
         static DbFactory()
         {
+            InitializeEnvironment();
+
             MapRepository.Instance.ReflectionStrategy = new SimpleReflectionStrategy();
             TableMapping.Map();
         }
 
+        private static void InitializeEnvironment()
+        {
+            // Speed up sqlite3 initialization since we don't use the config file and can't rely on preloading.
+            Environment.SetEnvironmentVariable("No_Expand", "true");
+            Environment.SetEnvironmentVariable("No_SQLiteXmlConfigFile", "true");
+            Environment.SetEnvironmentVariable("No_PreLoadSQLite", "true");
+        }
+
         public static void RegisterDatabase(IContainer container)
         {
             var mainDb = new MainDatabase(container.Resolve<IDbFactory>().Create());