From 4a3d5ed54d307967cbc4fceb0d015c7ca5613f8f Mon Sep 17 00:00:00 2001
From: anhefti <andreas.hefti@let.ethz.ch>
Date: Tue, 9 Nov 2021 08:53:45 +0100
Subject: [PATCH] fixed potential DB deadlock cause

---
 .../session/impl/indicator/DistributedPingCache.java            | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/session/impl/indicator/DistributedPingCache.java b/src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/session/impl/indicator/DistributedPingCache.java
index e35bbdf5..5d170162 100644
--- a/src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/session/impl/indicator/DistributedPingCache.java
+++ b/src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/session/impl/indicator/DistributedPingCache.java
@@ -180,7 +180,7 @@ public class DistributedPingCache implements DisposableBean {
         }
     }
 
-    @Transactional
+    @Transactional(readOnly = true)
     public void updateCache() {
 
         if (this.pingCache.isEmpty()) {