Yes, we're now running our Black Friday Sale. All Access and Pro are 33% off until 2nd December, 2025:
Java Web Weekly, Issue 123
Last updated: December 18, 2021
Modern software architecture is often broken. Slow delivery leads to missed opportunities, innovation is stalled due to architectural complexities, and engineering resources are exceedingly expensive.
Orkes is the leading workflow orchestration platform built to enable teams to transform the way they develop, connect, and deploy applications, microservices, AI agents, and more.
With Orkes Conductor managed through Orkes Cloud, developers can focus on building mission critical applications without worrying about infrastructure maintenance to meet goals and, simply put, taking new products live faster and reducing total cost of ownership.
Try a 14-Day Free Trial of Orkes Conductor today.
Modern software architecture is often broken. Slow delivery leads to missed opportunities, innovation is stalled due to architectural complexities, and engineering resources are exceedingly expensive.
Orkes is the leading workflow orchestration platform built to enable teams to transform the way they develop, connect, and deploy applications, microservices, AI agents, and more.
With Orkes Conductor managed through Orkes Cloud, developers can focus on building mission critical applications without worrying about infrastructure maintenance to meet goals and, simply put, taking new products live faster and reducing total cost of ownership.
Try a 14-Day Free Trial of Orkes Conductor today.
Mocking is an essential part of unit testing, and the Mockito library makes it easy to write clean and intuitive unit tests for your Java code.
Get started with mocking and improve your application tests using our Mockito guide:
Spring 5 added support for reactive programming with the Spring WebFlux module, which has been improved upon ever since. Get started with the Reactor project basics and reactive programming in Spring Boot:
Since its introduction in Java 8, the Stream API has become a staple of Java development. The basic operations like iterating, filtering, mapping sequences of elements are deceptively simple to use.
But these can also be overused and fall into some common pitfalls.
To get a better understanding on how Streams work and how to combine them with other language features, check out our guide to Java Streams:
Explore Spring Boot 3 and Spring 6 in-depth through building a full REST API with the framework:
Yes, Spring Security can be complex, from the more advanced functionality within the Core to the deep OAuth support in the framework.
I built the security material as two full courses - Core and OAuth, to get practical with these more complex scenarios. We explore when and how to use each feature and code through it on the backing project.
You can explore the course here:
Modern software architecture is often broken. Slow delivery leads to missed opportunities, innovation is stalled due to architectural complexities, and engineering resources are exceedingly expensive.
Orkes is the leading workflow orchestration platform built to enable teams to transform the way they develop, connect, and deploy applications, microservices, AI agents, and more.
With Orkes Conductor managed through Orkes Cloud, developers can focus on building mission critical applications without worrying about infrastructure maintenance to meet goals and, simply put, taking new products live faster and reducing total cost of ownership.
Try a 14-Day Free Trial of Orkes Conductor today.
Spring Data JPA is a great way to handle the complexity of JPA with the powerful simplicity of Spring Boot.
Get started with Spring Data JPA through the guided reference course:
Refactor Java code safely — and automatically — with OpenRewrite.
Refactoring big codebases by hand is slow, risky, and easy to put off. That’s where OpenRewrite comes in. The open-source framework for large-scale, automated code transformations helps teams modernize safely and consistently.
Each month, the creators and maintainers of OpenRewrite at Moderne run live, hands-on training sessions — one for newcomers and one for experienced users. You’ll see how recipes work, how to apply them across projects, and how to modernize code with confidence.
Join the next session, bring your questions, and learn how to automate the kind of work that usually eats your sprint time.
Yes, we're now running our Black Friday Sale. All Access and Pro are 33% off until 2nd December, 2025:
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
>> The best way of logging JDBC statements [vladmihalcea.com]
Some cool techniques to set up logging in a Hibernate system or right around the data source.
This one falls in the category – “didn’t know you could do that”.
>> What’s new in Spring Data Hopper? [spring.io]
Some really cool stuff in this latest Spring Data release.
I’m especially interested in the Querydsl stuff – looks like I have something to play with this weekend.
Projections also look like they’re going to really come in handy in some scenarios.
>> Using Java Generics to express variance of Collections and Functions [advancedweb.hu]
Playing with generics is always fun, especially when you sprinkle some Java 8 syntax on top.
>> Laziness at extreme: developing JAX-RS services with Spring Boot [aredko.com]
A quick and fun way of using Boot outside the core Spring ecosystem.
Also worth reading:
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>> Concurrent Recursive Function Memoization [sebastian-millies.com]
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>> Approaches to binding a Spring Boot application to a service in Cloud Foundry [java-allandsundry.com]
Webinars and presentations:
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>> RxJava and SWT: Out with Events, in with FRP [infoq.com]
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>> Project Jigsaw in JDK 9: Modularity Comes To Java [infoq.com]
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>> Live Webinar: Docker for Java Developers [jetbrains.com]
Time to upgrade:
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>> Spring Cloud Task 1.0.0.M2 is now available [spring.io]
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>> Spring Cloud Data Flow 1.0.0 M3 Released [spring.io]
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>> Spring Data Geode 1.0.0.APACHE-GEODE-INCUBATING-M2 Released [spring.io]
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>> Ehcache 3.0 Released with Revamped API and Off-Heap Storage [infoq.com]
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>> Spring Cloud Data Flow for Apache Mesos and Kubernetes 1.0.0.M2 versions released [spring.io]
2. Technical
>> The Benefits of Hypermedia APIs [olivergierke.de]
If you’ve been following Baeldung for any amount of time, you know Hypermedia APIs are one of my favorite topics. So I was excited to see this writeup pop up in my RSS feed.
Yeah – go read this one.
>> Locating Common Micro Service Performance Anti-Patterns [infoq.com]
A solid overview of the common things that can go wrong in a microservice architecture.
Some of these aren’t microservice specific, but the ones that are definitely paint a clear picture of the extra complexity in this kind of system.
>> Microservices are about applying a group of Best Practices [vanillajava.blogspot.com]
Moving an existing codebase to a microservice architecture is no small feat. And that’s not even taking into account the non-technical challenges.
We definitely need more nuanced strategies based on actual production experience with microservices to help drive these architectural decisions.
Also worth reading:
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>> Specifying JSON [tbray.org]
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>> How to derive business value from performance monitoring? [plumbr.eu]
3. Musings
>> Hiring is Broken… And It Isn’t Worth Fixing [daedtech.com]
An insightful read on how the hiring process isn’t looking at the right things.
It’s also long enough to fit three cool cartoons 🙂
The interesting thing is that I’ve read about at least two companies trying to take on the challenge just this week – both with non-traditional, depth vs width approaches. So maybe there’s hope.
>> Breach concealment is not a security strategy [troyhunt.com]
If you find security news and musings about the right way to handle a data breach interesting – then this is certainly worth reading.
>> Email: how to be polite and efficient [lemire.me]
The more email I get, the more I think that writing good email is a black art. This quick writeup has some useful rules to live by when writing that email.
>> Applied Consultant Taxonomy to Prevent Confusion [daedtech.com]
More nuanced and practical examples of how scoping and defining different roles is important, and “consultant” really isn’t enough.
Also worth reading:
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>> They Have To Be Monsters [codinghorror.com]
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>> Is software a neutral agent? [lemire.me]
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>> Is There Value in Having Non-Technical People Do Code Review? [daedtech.com]
4. Comics
And my favorite Dilberts of the week:
