Yes, we're now running our Black Friday Sale. All Access and Pro are 33% off until 2nd December, 2025:
Baeldung Weekly Review 33
Last updated: December 18, 2020
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.
Regression testing is an important step in the release process, to ensure that new code doesn't break the existing functionality. As the codebase evolves, we want to run these tests frequently to help catch any issues early on.
The best way to ensure these tests run frequently on an automated basis is, of course, to include them in the CI/CD pipeline. This way, the regression tests will execute automatically whenever we commit code to the repository.
In this tutorial, we'll see how to create regression tests using Selenium, and then include them in our pipeline using GitHub Actions:, to be run on the LambdaTest cloud grid:
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
>> Java SE 8 Optional, a pragmatic approach [joda]
Some solid, to the point tips on using Optional in new code.
>> Performance Guru Kirk Pepperdine Reflects on Results of RebelLabs’ Performance Survey [infoq]
Chock full of goodness in terms of mindset and approach to tuning and profiling a Java application – or any kind of application for that matter. Also things like this:
“Think of a profilers as the blind men examining an elephant”. So there you go
>> Your Maven build is slow. Speed it up! [zeroturnaround]
Quick feedback is essential for a good dev flow, and a slow build never did anyone any good. Have a read and speed up your Maven build.
>> What REPL means for Java [javaworld]
I like the new REPL already.
>> How to persist LocalDate and LocalDateTime with JPA [thoughts-on-java]
This is definitely handy, especially if you’re tired of working with the Date class, which is showing its age.
Also worth reading:
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>> Processing Twitter feed using Spring Boot [kaviddiss]
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>> Top 10 Useful, Yet Paranoid Java Programming Techniques [jooq]
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>> Hunting Memory Leaks in Java [toptal]
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>> Oracle Carving Strategy for Unsafe Library [infoq]
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>> Peter Lawrey on VarHandle in JDK9 & Making Data in Java Super Fast [dzone]
Webinars and presentations:
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>> Demand-Driven Architecture [infoq]
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>> Java 8 in Anger [infoq]
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>> JVMLS 2015 – Adventures on the Road to Valhalla [youtube]
Time to upgrade:
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>> REST Assured 2.5.0 – Release Notes
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>> Checkstyle Release 6.9
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>> IntelliJ IDEA 14.1.5 EAP 141.2311 is Available
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>> Some Milestone and RC Spring Releases: Spring Boot 1.3.0.M3 and Spring Roo 1.3.2 RC1
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>> Spring Batch 3.0.5.RELEASE is now available
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>> Jackson Release 2.6.1
2. Technical
>> How Docker changed me [odino]
A quick, practical but very interesting read about the way to use containers.
>> Half-done Versus Fake: The Intermediate Result/Mock Tradeoff [facebook]
Very interesting piece on how testing and more specifically mocking affects code style, what’s worth doing and what’s to much. A bit of a terse read.
>> Getting a Card’s Info From Trello [daedtech]
This is a cool quick intro to consuming an API. No muss, no fuss.
Also worth reading:
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>> The Evolution of APM [dynatrace]
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>> Route 53: why you should consider migrating your DNS needs to AWS [cloudacademy]
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>> Elasticsearch Filters Put Time on the Side of Log Management Users [loggly]
3. Musings
>> Use These 7 Tricks to Win Meetings and Get Promoted [daedtech]
Decent giggle to take-away ratio. Worth reading to get you in a good mood. Plus, it’s link-bait, so how can you not click?
>> We’re struggling to get traction with SSL because it’s still a “premium service” [troyhunt]
A fantastic read about the state of SSL in blog-land. It is admittedly a bit on the meta side, but it’s of course a topic that hits close to home with me as a site owner.
Also worth reading:
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>> If You Haven’t Done It Before, All Bets Are Off [prog21]
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>> The exponential cost of progress [lemire]
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>> The ethics of modern web ad-blocking [marco]
4. Comics
And my favorite Dilberts of the week:
>> I’m developing an app in my spare time
>> Plans to bestshore
>> International Billing Errors
5. Pick of the Week
Earlier this year I introduced the “Pick of the Week” section here in my “Weekly Review”. If you’re already on my email list – you got the pick already – hope you enjoyed it.
