QuickPerf is a testing library for Java providing annotations to quickly evaluate some performance properties.

    @MeasureHeapAllocation
    @HeapSize(value = 1, unit = AllocationUnit.GIGA_BYTE)
    @Test
    public void execute_batch() {
        ...
    }

    @ExpectSelect(1)
    @Test
    public void should_find_all_players() {
     ...
    }

[PERF] You may think that <1> select statement was sent to the database
       But in fact <10>...

💣  You may have even more select statements with production data.
Be careful with the cost of JDBC server roundtrips: https://blog.jooq.org/2017/12/18/the-cost-of-jdbc-server-roundtrips/

Perhaps you are facing a N+1 select issue
	* With Hibernate, you may fix it by using JOIN FETCH
	                                       or LEFT JOIN FETCH
	                                       or FetchType.LAZY
	                                       or ...

	* With Spring Data JPA, you may fix it by adding
		@EntityGraph(attributePaths = { "..." }) on repository method.

Many thanks Zenika for sponsoring this project!