Yes, we're now running our Black Friday Sale. All Access and Pro are 33% off until 2nd December, 2025:
Java Web Weekly, Issue 121
Last updated: October 1, 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
>> Understanding Reactive types [spring.io]
Even more insight into reactive types and semantics, and of course into the upcoming Spring 5 work that’s happening behind the scenes.
>> String Compaction [javaspecialists.eu]
Interesting as as always, this one is an low level exploration of how the JVM deals with memory and Strings.
>> Testing improvements in Spring Boot 1.4 [spring.io]
Testing in a Spring Boot project is getting simpler and more streamlined – especially when it comes to mocking and handling of complex JSON.
>> The Parameterless Generic Method Antipattern [jooq.org]
A very interesting piece on how the Java compiler doesn’t always do the right thing when it comes to using generics.
>> Java EE vs Java SE: Has Oracle Given up on Enterprise Software? [takipi.com]
A well researched and insightful writeup about the state of Java EE today.
>> Most popular Java EE servers: 2016 edition [plumbr.eu]
And continuing the Java EE thread, some real-world data about the popularity of existing Java EE servers.
Also worth reading:
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>> SpringOne Platform [spring.io]
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>> Emulating property literals with Java 8 method references [in.relation.to]
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>> jOOQ Tuesdays: Ming-Yee Iu Gives Insight into Language Integrated Querying [jooq.org]
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>> First steps to Spring Boot Cassandra [java-allandsundry.com]
Webinars and presentations:
Time to upgrade:
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>> Spring Security 4.1.0.RC2 Released [spring.io]
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>> Spring Cloud Brixton.RC2 now available [spring.io]
2. Technical
>> Ideal HTTP Performance [mnot.net]
We’re all working with HTTP one way or another, so it really doesn’t hurt understanding the protocol well. This is a great writeup to get us there.
>> Boost Your REST API with HTTP Caching [kennethlange.com]
A quick and practical intro to using caching headers with a REST API.
>> A Beginner’s Guide to Addressing Concurrency Issues [techblog.bozho.net]
Taking a step back before diving head first into a complex architecture problem is fantastic advice.
There is a time when analyzing the transactional semantics of your system and improving them is the right thing to do. And then there are all the other times when it just seems like it is.
Also worth reading:
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>> Fooled by monitoring [plumbr.eu]
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>> Writing OpenAPI (Swagger) Specification Tutorial – Part 4 – Advanced Data Modeling [apihandyman.io]
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>> The SMACK stack – hands on! [codecentric.de]
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>> Calculating Pi with Apache Spark [codecentric.de]
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>> AWS Storage Update – Amazon S3 Transfer Acceleration + Larger Snowballs in More Regions [aws.amazon.com]
3. Musings
>> Join me at GeeCON [code-cop.org]
GeeCON is going to be a blast, can’t wait to get there – if you’re coming, make sure you say hi.
>> A Taxonomy of Software Consultants [daedtech.com]
Getting some clarity around the terms we’re using when talking about our work we do and about ourselves is definitely a useful thing to spend some time on.
>> The powerful hacker culture [lemire.me]
The hacker culture and the drive to tinker, experiment and simply do – is one of the things I like most about our ecosystem, and probably one of the top reasons we’re all in it.
Also worth reading:
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>> How close are AI systems to human-level intelligence? The Allen AI challenge. [lemire.me]
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>> How your data is collected and commoditised via “free” online services [troyhunt.com]
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>> How to Get People to Review Your Code [daedtech.com]
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>> Delegation as Art [queue.acm.org]
4. Comics
And my favorite Dilberts of the week:
