diff --git a/sugoi-api-core/src/main/java/fr/insee/sugoi/core/configuration/EhCacheConfig.java b/sugoi-api-core/src/main/java/fr/insee/sugoi/core/configuration/EhCacheConfig.java
index 25fa241b..8b1af0a4 100644
--- a/sugoi-api-core/src/main/java/fr/insee/sugoi/core/configuration/EhCacheConfig.java
+++ b/sugoi-api-core/src/main/java/fr/insee/sugoi/core/configuration/EhCacheConfig.java
@@ -14,6 +14,8 @@
 package fr.insee.sugoi.core.configuration;
 
 import net.sf.ehcache.config.CacheConfiguration;
+
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.cache.CacheManager;
 import org.springframework.cache.annotation.CachingConfigurer;
 import org.springframework.cache.annotation.EnableCaching;
@@ -31,6 +33,9 @@
 @EnableCaching
 public class EhCacheConfig implements CachingConfigurer {
 
+  @Value("fr.insee.sugoi.realms.cache-ttl-seconds")
+  private int cacheTtlSeconds = 3600;
+
   @Bean(destroyMethod = "shutdown")
   public net.sf.ehcache.CacheManager ehCacheManager() {
 
@@ -38,16 +43,11 @@ public net.sf.ehcache.CacheManager ehCacheManager() {
     cacheConfiguration.setName("Realms");
     cacheConfiguration.setMemoryStoreEvictionPolicy("LRU");
     cacheConfiguration.setMaxEntriesLocalHeap(1000);
-
-    CacheConfiguration cacheConfiguration1 = new CacheConfiguration();
-    cacheConfiguration1.setName("Realm");
-    cacheConfiguration1.setMemoryStoreEvictionPolicy("LRU");
-    cacheConfiguration1.setMaxEntriesLocalHeap(1000);
+    cacheConfiguration.setTimeToLiveSeconds(cacheTtlSeconds);
 
     net.sf.ehcache.config.Configuration config = new net.sf.ehcache.config.Configuration();
 
     config.addCache(cacheConfiguration);
-    config.addCache(cacheConfiguration1);
 
     return net.sf.ehcache.CacheManager.newInstance(config);
   }
diff --git a/sugoi-api-ldap-config-provider/src/main/java/fr/insee/sugoi/config/LdapRealmProviderDAOImpl.java b/sugoi-api-ldap-config-provider/src/main/java/fr/insee/sugoi/config/LdapRealmProviderDAOImpl.java
index c7e3717c..7966e25e 100644
--- a/sugoi-api-ldap-config-provider/src/main/java/fr/insee/sugoi/config/LdapRealmProviderDAOImpl.java
+++ b/sugoi-api-ldap-config-provider/src/main/java/fr/insee/sugoi/config/LdapRealmProviderDAOImpl.java
@@ -311,13 +311,13 @@ public ProviderResponse deleteRealm(String realmName, ProviderRequest providerRe
         List<UserStorage> userStorages =
             load(realmName)
                 .orElseThrow(
-                    () -> new RealmNotFoundException("The realm " + "test" + " doesn't exist "))
+                    () -> new RealmNotFoundException("The realm " + realmName + " doesn't exist "))
                 .getUserStorages();
         if (userStorages.size() > 1) {
           for (UserStorage userStorage :
               load(realmName)
                   .orElseThrow(
-                      () -> new RealmNotFoundException("The realm " + "test" + " doesn't exist "))
+                      () -> new RealmNotFoundException("The realm " + realmName + " doesn't exist "))
                   .getUserStorages()) {
             ldapConnectionPool.delete(getUserStorageDn(userStorage.getName(), realmName));
           }
@@ -335,6 +335,7 @@ public ProviderResponse deleteRealm(String realmName, ProviderRequest providerRe
   }
 
   private synchronized LDAPConnectionPool initLdapPoolConnection() {
+    //TODO use an authenticated connexion 
     try {
       if (ldapConnectionPool == null
           || !ldapConnectionPool.getConnectionPoolName().equals(url + "-" + port)) {