@MeasureHeapAllocation
@HeapSize(value = 1, unit = AllocationUnit.GIGA_BYTE)
@Test
public void execute_batch() {
...
}📙 All the JVM annotations 🔎 Examples with JUnit4, Junit5, TestNG 🔎 Heap allocation of Apache Maven
@ExpectSelect(1)
@Test
public void should_find_all_players() {
...
}[PERF] You may think that <1> select statement was sent to the database
But there are in fact <10>...
💣 You may have even more select statements with production data.
Be careful with the cost of JDBC roundtrips: https://blog.jooq.org/2017/12/18/the-cost-of-jdbc-server-roundtrips/
Auto-detection of Hibernate and Spring Data JPA:
💡 Perhaps you are facing an 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: https://docs.spring.io/spring-data/jpa/docs/current/reference/ht
📙 All the SQL annotations 🔎 Spring Boot & JUnit 4 🔎 Spring Boot & JUnit 5
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