Переезд на java 13

src/main/java/ru/serega6531/packmate/service/StreamSubscriptionService.java

@@ -12,13 +12,14 @@ import ru.serega6531.packmate.model.pojo.SubscriptionMessage;
 
 import java.io.IOException;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 @Service
 @Slf4j
 public class StreamSubscriptionService {
 
-    private List<WebSocketSession> subscribers = new ArrayList<>();
+    private List<WebSocketSession> subscribers = Collections.synchronizedList(new ArrayList<>());
 
     private final ObjectMapper mapper;
 

src/main/resources/application.yml

@@ -11,6 +11,7 @@ spring:
       hibernate:
         temp:
           use_jdbc_metadata_defaults: false
+    database-platform: org.hibernate.dialect.PostgreSQLDialect
 
 
 enable-capture: true