Java Weekly, Issue 342

1. Spring and Java

>> On Generating Identity Hash Codes [alidg.me]

An in-depth take on different strategies used by the HotSpot JVM to generate identity hashcodes.

>> Scalability of Different Concurrent Map Implementations [vmlens.com]

Benchmarking three different thread-safe map implementations: SynchronizedMap, ConcurrentHashMap, and another lock-free implementation.

>> Five JUnit 5 features you might not know yet [rieckpil.de]

A practical guide to a few lesser-known features in JUnit 5 such as nested tests, parallelization, ordered tests, and so on.

Also worth reading:

• >> Potential Inlined JDK Classes [marxsoftware.com]

• >> Configuring Java applications at runtime with Spring Profiles [blog.scottlogic.com]

• >> How does orphanRemoval work with JPA and Hibernate [vladmihalcea.com]

• >> Building web applications with Spring Boot and Vaadin [spring.io]

• >> Return of the OpenJDK Developers’ Guide [infoq.com]

• >> Introducing Java Functions for Spring Cloud Stream Applications [spring.io]

• >> New Spellchecker Implementation in IntelliJ IDEA 2020.2 [blog.jetbrains.com]

Webinars and presentations:

• >> Does Java Need Inline Types? What Project Valhalla Can Bring to Java [infoq.com]

• >> A Bootiful Podcast: Spring Data JDBC lead on Spring Data, domain-driven design and more [spring.io]

• >> Responsible Microservices [infoq.com]

• >> Webinar: Productive Web Development in Java with IntelliJ IDEA, Spring Boot, and Vaadin [blog.jetbrains.com]

• >> Quarkus in Action [infoq.com]

Time to upgrade:

• >> IntelliJ IDEA 2020.1.3 Available [blog.jetbrains.com]

2. Technical

>> Getting started with Ktor [mscharhag.com]

A quick demonstration of building asynchronous CRUD REST APIs in Ktor and Kotlin.

Also worth reading:

• >> Converting JAX-RS parameters with ParamConverters [blog.sebastian-daschner.com]

• >> Run IDE Features From the Terminal [blog.jetbrains.com]

• >> Poor man’s static web site protection in AWS S3 (with Terraform) [tryingthings.com]

3. Musings

>> Byte Down: Making Netflix’s Data Infrastructure Cost-Effective [netflixtechblog.com]

An interesting approach to manage infrastructure costs at Netflix: transparency instead of budget limits.

Also worth reading:

• >> On Open Source, licenses and changes [blog.frankel.ch]

• >> The journey to modern manufacturing with AWS [allthingsdistributed.com]

• >> How to assess a developer’s technical ability: A guide for interviewers [blog.scottlogic.com]

4. Comics

And my favorite Dilberts of the week:

>> First Time for Everything [dilbert.com]

>> Lack of Social Contact [dilbert.com]

>> Wally Took Notes [dilbert.com]

5. Pick of the Week

>> Not sure? [asmartbear.com]

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