"batch":true, "querySize":1, "batchSize":5, "query":["insert into school (name, id) values (?, ?)"], 
  "params":[["School1","1"],["School2","2"],["School3","3"],["School4","4"],["School5","5"]]

"querySize":1, "batchSize":0, "query":["insert into school (name, id) values (?, ?)"], 
  "params":[["School1","1"]]
"querySize":1, "batchSize":0, "query":["insert into school (name, id) values (?, ?)"], 
  "params":[["School2","2"]]
"querySize":1, "batchSize":0, "query":["insert into school (name, id) values (?, ?)"],

@Entity
@Getter
@Setter
public class A {

  @Id
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  private Long id;

  private String name;

}

@Entity
@Getter
@Setter
public class B {

  @Id
  @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "ID_GENERATOR")
  @SequenceGenerator(name = "ID_GENERATOR", sequenceName = "b_id_seq")
  private Long id;

  private String name;

}

   65126500 nanoseconds spent preparing 10000 JDBC statements;
    32415667500 nanoseconds spent executing 10000 JDBC statements;
    0 nanoseconds spent executing 0 JDBC batches;
    0 nanoseconds spent performing 0 L2C puts;
    0 nanoseconds spent performing 0 L2C hits;
    0 nanoseconds spent performing 0 L2C misses;
    32999300 nanoseconds spent executing 1 flushes (flushing a total of 10000 entities and 0 collections);
    0 nanoseconds spent executing 0 partial-flushes (flushing a total of 0 entities and 0 collections)

 16900 nanoseconds spent acquiring 1 JDBC connections;
    0 nanoseconds spent releasing 0 JDBC connections;
    4382400 nanoseconds spent preparing 202 JDBC statements;
    455562600 nanoseconds spent executing 201 JDBC statements;
    34117814800 nanoseconds spent executing 20 JDBC batches;
    0 nanoseconds spent performing 0 L2C puts;
    0 nanoseconds spent performing 0 L2C hits;
    0 nanoseconds spent performing 0 L2C misses;
    34273375200 nanoseconds spent executing 1 flushes (flushing a total of 10000 entities and 0 collections);
    0 nanoseconds spent executing 0 partial-flushes (flushing a total of 0 entities and 0 collections)