Yes, we're now running our Black Friday Sale. All Access and Pro are 33% off until 2nd December, 2025:
Java Weekly, Issue 379
Last updated: April 2, 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:
1. Spring and Java
>> JEP 406: Pattern Matching for switch (Preview)Â [openjdk.java.net]
Patterns meet switch expressions – the proposal to use pattern matching on switching cases!
>> A (definitive?) guide on LazyInitializationException [blog.frankel.ch]
Taming lazy entity associations – introducing solutions such as eager relationships, OSIV, DTOs, Hibernate Hydrate, fetch join, and entity graphs.
>> Performance of running Spring Boot as AWS Lambda functions [arnoldgalovics.com]
Productivity vs performance: comparing Spring Boot with vanilla Java in a serverless configuration. Good stuff.
Also worth reading:
- >> The Road to Kotlin 1.5Â [infoq.com]
- >> Proposed schedule for JDK 17Â [openjdk.java.net]
- >> Polymorphic association mappings of independent classes [thorben-janssen.com]
- >> Eclipse Adoptium (Formerly known as AdoptOpenJDK) Working Group Formally Established [infoq.com]
- >> Implementing Plugins with Java’s Service Provider Interface [reflectoring.io]
- >> Implementing equals(Object) with instanceof Pattern Matching [marxsoftware.com]
- >> Convert Spring Boot Apps to GraalVM with Spring Native Beta [infoq.com]
Webinars and presentations:
- >> Java 16 Rundown, First Of Java 17 – Inside Java Newscast #1Â [youtube.com]
- >> A Bootiful Podcast: Shigeru Urushibara, President and CEO at UL Systems, Inc., and Japanese technology ecosystem legend [spring.io]
- >> SpringOne Tour 2021: #Booternetes [spring.io]
Time to upgrade:
- >> MicroProfile 4.0 support now available in Open Liberty 21.0.0.3Â [openliberty.io]
- >> Spring Data 2021.0.0-RC1 and 2020.0.7 released [spring.io]
- >> Weld 4.0.1.Final [weld.cdi-spec.org]
- >> IntelliJ IDEA 2021.1 Release Candidate Is Out! [blog.jetbrains.com]
2. Technical
>> SQL Server deadlock trace flags [vladmihalcea.com]
Hunting down deadlock causes in SQL server – taking advantage of trace flags and error logs for root cause analysis!
Also worth reading:
- >> Fargate with EFS and Aurora Serverless using AWS CDK [blog.codecentric.de]
- >> Development workflows that put you in a flow state [blog.sebastian-daschner.com]
- >> Alibaba Cloud Uses Dapr to Support Its Business Growth [infoq.com]
3. Musings
>> Disconnecting From Work is a Skill We Need to Rebuild [morethancoding.com]
Tips for improving productivity and creativity by getting disconnected from work!
Also worth reading:
- >> App Modernization: If You Want to Succeed, Don’t Ignore Culture [tanzu.vmware.com]
- >> Crowded backlog? A product is more than the sum of its features [blog.codecentric.de]
- >> Escape the Permission Trap with Healthy Habits [benjiweber.co.uk]
- >> Piano Practice Software Progress [jacquesmattheij.com]
- >> Software Development in Disruptive Times [queue.acm.org]
4. Comics
And my favorite Dilberts of the week:
>> Dogbert Crisis Consultant [dilbert.com]
>> Cut Pay For No Commute [dilbert.com]
>> Reschedule The Zoom Call [dilbert.com]
5. Pick of the Week
>> Why Most Programmers End Up Being (or Are) Underperforming Technical Leads [betterprogramming.pub]
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Java Weekly, Issue 378
