From a4067e1622a4498dd49b3627a99c42a174b6d49a Mon Sep 17 00:00:00 2001
From: Besmir Beqiri <bb@sandec.de>
Date: Wed, 11 Sep 2024 12:59:03 +0200
Subject: [PATCH] Use `ConcurrentHashMap`  to support full concurrency during
 retrievals and updated of the map

---
 .../one/jpro/platform/auth/core/basic/InMemoryUserManager.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/jpro-auth/core/src/main/java/one/jpro/platform/auth/core/basic/InMemoryUserManager.java b/jpro-auth/core/src/main/java/one/jpro/platform/auth/core/basic/InMemoryUserManager.java
index 229e408d..9a57d3ee 100644
--- a/jpro-auth/core/src/main/java/one/jpro/platform/auth/core/basic/InMemoryUserManager.java
+++ b/jpro-auth/core/src/main/java/one/jpro/platform/auth/core/basic/InMemoryUserManager.java
@@ -8,6 +8,7 @@
 
 import java.util.*;
 import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ConcurrentHashMap;
 
 /**
  * Non-persistent implementation of {@code UserDetailsManager} which is backed
@@ -23,7 +24,7 @@ public class InMemoryUserManager implements UserManager {
     private final Map<String, User> users;
 
     public InMemoryUserManager() {
-        users = new HashMap<>();
+        users = new ConcurrentHashMap<>();
     }
 
     public InMemoryUserManager(@NotNull final Collection<User> users) {