dialaya/quickperf

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

Usage

JVM annotations

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

📙 All the JVM annotations 🔎 Heap allocation of Apache Maven

SQL annotations

    @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/

Auto-detection of Hibernate and Spring Data JPA:

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.

📙 All the SQL annotations 🔎 Spring Boot and Micronaut examples

View Devoxx Belgium talk

Documentation

The full documentation is available here.

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Contributing

You are very welcome to contribute to QuickPerf! You can contribute in many ways. Some relatively easy things can be done. Other issues are more challenging. Each contribution is appreciated. Read our contributing guide to learn more.

Contributors

Many thanks to all our contributors!

_{Jean Bisutti} 💻 ⚠ 📖 🎨 💡 👀 📢	_guiRagh 💻 ⚠	_{Patrice CAVEZZAN} 💻 🚇 📖	_{Alexandre Blanchard} 🐛 💻	_{Eric McDowell} 💻	_{Jan Krüger} 💻	_{Loïc Mathieu} 💻
_{Daniel Bentley} 🚇	_{Gaurav Deshpande} ⚠	_rdm100 📖	_{Artus de Benque} 🐛 💻	_{Minh-Trieu Ha} 💻