Yes, we're now running our Black Friday Sale. All Access and Pro are 33% off until 2nd December, 2025:
Baeldung Weekly Review 36
Last updated: August 6, 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.
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
>> Displaying progress of Spring application startup in web browser [nurkiewicz.com]
Showing visual progress during the bootstrap process of a Spring app.
There is cool, and then there is cool. And this is just plain cool. Play the video at the end to see this thing in action.
>> React.js and Spring Data REST: Part 1 – Basic Features [spring.io]
The first piece in a promising new series to follow – focused on building a Spring Data REST app and a front end for it.
>> Naming Optional query methods [joda.org]
More practical advice for using Optional – this time as a return type for query methods.
>> Java EE 8 MVC: Getting started with Ozark [mscharhag.com]
The first of an interesting series, exploring the upcoming MVC framework out of the next Java EE release.
Also worth reading:
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>> Spring boot static web resource handling for Single Page Applications [java-allandsundry.com]
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>> A Post-Apocalyptic sun.misc.Unsafe World [infoq.com]
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>> New JVM Option Enables Generation of Mixed-Mode Flame Graphs [infoq.com]
- >> Dependency injection: syntax sugar over function composition [nurkiewicz.com]
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>> Demo of a stateless and RESTful token-based authorization system using JWT and Spring Security [github]
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>> JShell, the Java 9 REPL – What does it do? [jaxenter.com]
Time to upgrade:
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>> Spring Data Release Train Gosling Goes GA [spring.io]
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>> Spring Framework 4.2.1 Available Now [spring.io]
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>> Spring Web Flow 2.4.2 released [spring.io]
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>> Spring LDAP 2.0.4 Released [spring.io]
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>> IntelliJ IDEA 15 EAP: Help us Test the Adjustments for Color Deficiency [jetbrains.com]
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>> Apache Tomcat 8.0.26 available [mail-archives.apache.org]
2. Technical
>> Revisiting webapp performance on HTTP/2 [advancedweb.hu]
Very cool look into the speed improvements in HTTP/2, along with hard-numbers for the various optimization techniques.
Crazy how much of a difference there is here – some really nice numbers.
>> Does each microservice really need its own database? [plainoldobjects.com]
This piece discusses some quite important questions touching on CQRS, Event Sourcing and focusing on the oh-so useful Polyglot Persistence aspects of that architecture.
>> Introducing Brutal Coding Constraints [code-cop.org]
Coding with the full set of typical constraints for this kind of session – this must have been a fun day.
Here’s another one to try out if you’re feeling brave – no mouse. Get your mouse and put it in your bag. Really.
I did that a few years back and I learned more keyboard shortcuts (I now use daily) over that weekend than I did for a whole year with the mouse.
>> The Unit of Work and Transactions In Domain Driven Design [sapiensworks.com]
As I’m going deeper into DDD and Event Sourcing myself, I really enjoy these dives into specific aspects of the architecture.
>> Lesson learned, test your migrations on the big dataset [swizec.com]
Hmm – this takes be back a few years, cursing the heavens in the middle of a highly annoying data migration. Good read.
Also worth reading:
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>> New – Resource-Oriented Bidding for EC2 Spot Instances [aws.amazon.com]
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>> How to Help Prepare for DDoS Attacks by Reducing Your Attack Surface [aws.amazon.com]
3. Musings
>> An In-Depth Look At CQRS [sapiensworks.com]
Solid intro to CQRS and the CQS pattern, while at the same time looking forward towards Event Sourcing.
>> Team Efficiency is Irrelevant [benjiweber.co.uk]
An interesting read about the 80-20 of value in building software, and the idea that maybe, just maybe – this entire track of measuring performance for knowledge workers is more complex than other disciplines.
>> Surviving Software Heroes [daedtech.com]
Solid advice on how to approach the hard, hard problem of improving the team you’re part of – or lead.
Also worth reading:
- >> Empowering Testers [code-cop.org]
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>> The Essence of Object-Functional Programming and the Practical Potential of Scala [codecentric.de]
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>> Salary Negotiation without Bridge Burning [daedtech.com]
4. Comics
Here are my favorite comics of the week:
>> The Laser Pointer [theoatmeal.com]
>> How to pet a kitty [theoatmeal.com]
>> How we should have been tough in our senior year of high school [theoatmeal.com]
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.
If not – you can share the review and unlock it right here:
[sociallocker id=”6211″]
A good reference for putting together a Jenkins pipeline:
>> Orchestrating Your Delivery Pipelines with Jenkins
[/sociallocker]
