Java Web Weekly, Issue 131

Azure Spring Apps is a fully managed service from Microsoft (built in collaboration with VMware), focused on building and deploying Spring Boot applications on Azure Cloud without worrying about Kubernetes.

And, the Enterprise plan comes with some interesting features, such as commercial Spring runtime support, a 99.95% SLA and some deep discounts (up to 47%) when you are ready for production.

>> Learn more and deploy your first Spring Boot app to Azure.

You can also ask questions and leave feedback on the Azure Spring Apps GitHub page.

Slow MySQL query performance is all too common. Of course it is. A good way to go is, naturally, a dedicated profiler that actually understands the ins and outs of MySQL.

The Jet Profiler was built for MySQL only, so it can do things like real-time query performance, focus on most used tables or most frequent queries, quickly identify performance issues and basically help you optimize your queries.

Critically, it has very minimal impact on your server's performance, with most of the profiling work done separately - so it needs no server changes, agents or separate services.

Basically, you install the desktop application, connect to your MySQL server, hit the record button, and you'll have results within minutes:

>> Try out the Profiler

Accelerate Your Jakarta EE Development with Payara Server!

With best-in-class guides and documentation, Payara essentially simplifies deployment to diverse infrastructures.

Beyond that, it provides intelligent insights and actions to optimize Jakarta EE applications.

The goal is to apply an opinionated approach to get to what's essential for mission-critical applications - really solid scalability, availability, security, and long-term support:

>> Download and Explore the Guide (to learn more)

The AI Assistant to boost Boost your productivity writing unit tests - Machinet AI.

AI is all the rage these days, but for very good reason. The highly practical coding companion, you'll get the power of AI-assisted coding and automated unit test generation.
Machinet's Unit Test AI Agent utilizes your own project context to create meaningful unit tests that intelligently aligns with the behavior of the code.
And, the AI Chat crafts code and fixes errors with ease, like a helpful sidekick.

Simplify Your Coding Journey with Machinet AI:

>> Install Machinet AI in your IntelliJ

Looking for the ideal Linux distro for running modern Spring apps in the cloud?

Meet Alpaquita Linux: lightweight, secure, and powerful enough to handle heavy workloads.

This distro is specifically designed for running Java apps. It builds upon Alpine and features significant enhancements to excel in high-density container environments while meeting enterprise-grade security standards.

Specifically, the container image size is ~30% smaller than standard options, and it consumes up to 30% less RAM:

>> Try Alpaquita Containers now.

DbSchema is a super-flexible database designer, which can take you from designing the DB with your team all the way to safely deploying the schema.

The way it does all of that is by using a design model, a database-independent image of the schema, which can be shared in a team using GIT and compared or deployed on to any database.

And, of course, it can be heavily visual, allowing you to interact with the database using diagrams, visually compose queries, explore the data, generate random data, import data or build HTML5 database reports.

>> Take a look at DBSchema

Slow MySQL query performance is all too common. Of course it is. A good way to go is, naturally, a dedicated profiler that actually understands the ins and outs of MySQL.

Critically, it has very minimal impact on your server's performance, with most of the profiling work done separately - so it needs no server changes, agents or separate services.

Basically, you install the desktop application, connect to your MySQL server, hit the record button, and you'll have results within minutes:

>> Try out the Profiler

At the very beginning of last year, I decided to track my reading habits and share the best stuff here, on Baeldung. Haven’t missed a review since.

Here we go…

1. Spring and Java

>> Java 9 Additions To Optional [codefx.org]

Some interesting stuff is definitely coming to Optional in the JDK.

>> 5 Common Hibernate Exceptions and How to Fix Them [takipi.com]

I like to go through these exception focused articles – they usually have new insights I can glean for when I do get the exception.

>> Managing Secrets with Vault [spring.io]

Storing secret configuration data is almost always an important thing to get right in the overall architecture of a system.

It’s also one of the most common question I get from readers when it comes to project configuration. So this writeup is an interesting solution to that question. Not the only solution, but certainly an interesting one.

>> Turn Around. Don’t Use JPA’s loadgraph and fetchgraph Hints. Use SQL Instead. [jooq.org]

A different perspective on picking the persistence solution of your next greenfield project, talking about preferring plain SQL over something higher level such as JPA.

>> 14 High-Performance Java Persistence Tips [vladmihalcea.com]

Some low-hanging fruit (and not so low-hanging) to improve the performance of a Hibernate implementation.

>> “Micro Profile in Enterprise Java” Announced ! [antoniogoncalves.org] and >> The Enterprise Java Future Is Bright: Java EE 8 MicroProfile Launched [adam-bien.com]

Big announcements in the Java EE world (seems like every week now).

>> Close Encounters of The Java Memory Model Kind [shipilev.net]

A fantastic deep-dive into the JMM (still reading through it now). Definitely one to bookmark.

Also worth reading:

>> Installing Java Application As a Windows Service [techblog.bozho.net]
>> Spring Cloud Zuul Support – Configuring Timeouts [java-allandsundry.com]
>> Functor and monad examples in plain Java [nurkiewicz.com]
>> Forget Guava: 5 Google Libraries Java Developers Should Know [takipi.com]
>> What the JIT!? Anatomy of the OpenJDK HotSpot VM [infoq.com]
>> JVM JIT optimization techniques – part 2 [advancedweb.hu]
>> Testing REST Endpoints Using REST Assured [semaphoreci.com]
>> Hibernate Tips: How to initialize lazy relationships within a query [thoughts-on-java.org]
>> Spring Boot: RxJava Declarative Schedulers [jmnarloch.com]
>> Multi-Cloud is a Safety Belt for the Speed-Freaks [infoq.com]
>> Ruling Database Testing with DBUnit Rules [rpestano.com]

Webinars and presentations:

>> Behind the Scenes with Metamarkets, Episode 2 [metamarkets.com]
>> Best Practices Using The CDT Debugger [infoq.com]
>> Preparing Your Code for JDK 9 [infoq.com]
>> A Code-Driven Microservices Session. From infoSharePL 2016 [adam-bien.com]
>> Cloud Native – Phil Webb – SpringBoot at SpringOne [youtube.com]

Time to upgrade:

>> Spring for Apache Hadoop 2.4.0 GA released [spring.io]
>> Polishing, polishing and more polishing: Hibernate Search 5.5.4.Final is here! [in.relation.to]

2. Technical and Musings

>> Code Review and How Enterprises Can Miss The Point [daedtech.com]

An insightful analysis of the motivations of different players in a large organization when it comes to code reviews and to getting something useful out of the practice. Well worth reading.

>> How I prepared for the NDC keynote (and other speaker tips) [troyhunt.com]

Some solid, to the point advice on speaking well.

I feel that speaking is a life-long journey and there’s always a lot to learn. And delivering a good presentation is such an important skill that it really makes sense to spend time and learn how to do it well, as much as possible.

>> Learning a Healthy Fear of Legacy Code [daedtech.com]

Here be dragons.

>> Expanding the Cloud: Introducing the AWS Asia Pacific (Mumbai) Region [allthingsdistributed.com]

Yeah, one more region to play with, after Frankfurt.

>> Special Skills [dandreamsofcoding.com]

There’s a time to study the foundations and there’s a time to specialize. And while foundations are important, specialization and niching down are more and more critical today.

>> Jepsen: Crate 0.54.9 version divergence [aphyr.com]

Who knew that the Elasticsearch data consistency problems (which are quite real) would go beyond the core product and spread to other solutions as well. It’s not that surprising though.

>> Amazon Elastic File System – Production-Ready in Three Regions [aws.amazon.com] and

Elastic Network Adapter – High Performance Network Interface for Amazon EC2 [aws.amazon.com]

Two important announcements of new AWS goodness in a single week.

Also worth reading:

>> Verification of Event-Driven Systems [abdullin.com]
>> BoiledCarrot [martinfowler.com]
>> Curious Customer [jayfields.com]
>> New Ways to Discover and Use Alexa Skills [allthingsdistributed.com]
>> To Stay Or Not To Stay [jacquesmattheij.com]

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1. Spring and Java

>> Java 9 Additions To Optional [codefx.org]

>> 5 Common Hibernate Exceptions and How to Fix Them [takipi.com]

>> Managing Secrets with Vault [spring.io]

>> Turn Around. Don’t Use JPA’s loadgraph and fetchgraph Hints. Use SQL Instead. [jooq.org]

>> 14 High-Performance Java Persistence Tips [vladmihalcea.com]

>> “Micro Profile in Enterprise Java” Announced ! [antoniogoncalves.org] and >> The Enterprise Java Future Is Bright: Java EE 8 MicroProfile Launched [adam-bien.com]

>> Close Encounters of The Java Memory Model Kind [shipilev.net]

>> Installing Java Application As a Windows Service [techblog.bozho.net]

>> Spring Cloud Zuul Support – Configuring Timeouts [java-allandsundry.com]

>> Functor and monad examples in plain Java [nurkiewicz.com]

>> Forget Guava: 5 Google Libraries Java Developers Should Know [takipi.com]

>> What the JIT!? Anatomy of the OpenJDK HotSpot VM [infoq.com]

>> JVM JIT optimization techniques – part 2 [advancedweb.hu]

>> Testing REST Endpoints Using REST Assured [semaphoreci.com]

>> Hibernate Tips: How to initialize lazy relationships within a query [thoughts-on-java.org]

>> Spring Boot: RxJava Declarative Schedulers [jmnarloch.com]

>> Multi-Cloud is a Safety Belt for the Speed-Freaks [infoq.com]

>> Ruling Database Testing with DBUnit Rules [rpestano.com]

>> Behind the Scenes with Metamarkets, Episode 2 [metamarkets.com]

>> Best Practices Using The CDT Debugger [infoq.com]

>> Preparing Your Code for JDK 9 [infoq.com]

>> A Code-Driven Microservices Session. From infoSharePL 2016 [adam-bien.com]

>> Cloud Native – Phil Webb – SpringBoot at SpringOne [youtube.com]

>> Spring for Apache Hadoop 2.4.0 GA released [spring.io]

>> Polishing, polishing and more polishing: Hibernate Search 5.5.4.Final is here! [in.relation.to]

2. Technical and Musings

>> Code Review and How Enterprises Can Miss The Point [daedtech.com]

>> How I prepared for the NDC keynote (and other speaker tips) [troyhunt.com]

>> Learning a Healthy Fear of Legacy Code [daedtech.com]

>> Expanding the Cloud: Introducing the AWS Asia Pacific (Mumbai) Region [allthingsdistributed.com]

>> Special Skills [dandreamsofcoding.com]

>> Jepsen: Crate 0.54.9 version divergence [aphyr.com]

>> Amazon Elastic File System – Production-Ready in Three Regions [aws.amazon.com] and

Elastic Network Adapter – High Performance Network Interface for Amazon EC2 [aws.amazon.com]

>> Verification of Event-Driven Systems [abdullin.com]

>> BoiledCarrot [martinfowler.com]

>> Curious Customer [jayfields.com]

>> New Ways to Discover and Use Alexa Skills [allthingsdistributed.com]

>> To Stay Or Not To Stay [jacquesmattheij.com]

3. Comics

>> Nothing about you is normal [dilbert.com]

>> Two good ways to avoid listening to others [dilbert.com]

>> Did someone tell you Twitter was a video game? [dilbert.com]

4. Pick of the Week

>> This I Believe – 25 Thoughts for Life [conversionxl.com]

Get started with Spring and Spring Boot, through the Learn Spring course: