Revert "Revert "Merge pull request #62 from folio-org/MODFQMMGR-67-ba…

…tched-inserts""

This reverts commit 9f7624e.

src/main/resources/application.yml

@@ -17,6 +17,8 @@ spring:
     hikari:
       # time in ms to wait for db connection
       initialization-fail-timeout: 1800000
+      data-source-properties:
+        reWriteBatchedInserts: true
   sql:
     init:
       # to boot up application despite of any DB connection issues
@@ -31,6 +33,8 @@ spring:
       hibernate:
         dialect: org.hibernate.dialect.PostgreSQLDialect
         format_sql: true
+        jdbc:
+          batch_size: 50
     show-sql: false
   liquibase:
     enabled: true