From cfcd17d45e7ef30deadbe57cd642de6a2a6ecaed Mon Sep 17 00:00:00 2001
From: Erki Aas <eaas@k-space.ee>
Date: Tue, 11 Oct 2022 02:23:54 +0300
Subject: [PATCH] Make MongoClient prefer secondaries

---
 backend/server.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/backend/server.js b/backend/server.js
index c99b812..36ff245 100644
--- a/backend/server.js
+++ b/backend/server.js
@@ -15,8 +15,10 @@ const pipeline = [];
 const PORT = process.env.PORT || 3002;
 
 // Create Mongo client
-const mongoClient = new MongoClient(mongoUri);
-
+const mongoOptions = {
+  readPreference: 'secondaryPreferred'
+}
+const mongoClient = new MongoClient(mongoUri, mongoOptions);
 
 /*============== CODE ==============*/
 async function run() {