Baeldung Weekly Review 4
Last updated: February 10, 2022
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:
Handling concurrency in an application can be a tricky process with many potential pitfalls. A solid grasp of the fundamentals will go a long way to help minimize these issues.
Get started with understanding multi-threaded applications with our Java Concurrency 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:
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.
Distributed systems often come with complex challenges such as service-to-service communication, state management, asynchronous messaging, security, and more.
Dapr (Distributed Application Runtime) provides a set of APIs and building blocks to address these challenges, abstracting away infrastructure so we can focus on business logic.
In this tutorial, we'll focus on Dapr's pub/sub API for message brokering. Using its Spring Boot integration, we'll simplify the creation of a loosely coupled, portable, and easily testable pub/sub messaging system:
At the very beginning of 2014 I decided to track my reading habits and share the best stuff here, on Baeldung.
2014 has been quite the year, covering each week with a review. I’ve been doing a lot more reading to make sure I cover and curate stuff that has value and is actually interesting.
Let me know in the comments if you’re finding my reviews interesting and useful.
Here we go…
1. Spring and Java
>> The Resource Server: Angular JS and Spring Security Part III
This 3rd part of a super useful series gets into the nitty-gritty of CORS, a simple Token auth solution and of course Spring Session. Lots to take away from this one, same as the first two.
>> Search In A Box With Docker, Elastic Search, and Selenium
An ATDD driven, pragmatic, elegantly simple article on building a joke search app.
I regularly get this question – What’s the best way for me to start learning X? (Spring, Web development, etc). This isn’t a bad way to start.
>> Fork/Join Framework vs. Parallel Streams vs. ExecutorService: The Ultimate Fork/Join Benchmark
A very interesting analysis/benchmark of the various options to do parallelism in Java – some real numbers to sink your teeth into.
Time to upgrade:
This week comes with a lot of good presentations and webinar recordings:
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>> Deep dive into Spring WebSockets
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>> Spring 4 Web Applications
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>> The Death of Java Application Servers
2. Technical and Musings
>> We Are Gonna Need It
In the hurry to rid ourselves of Waterfall, there’s a real risk of going to far in the other direction. This piece is food for thought on how we might solve that problem.
>> The Internet Is Pseudo-Decentralized
A thought experiment about the topology of the web and how you get to play – a quick and interesting read.
>> I’ll Take a Crack at Defining Tech Debt
A good foray into the all to familiar concept of “technical debt”.
>> Open-Source Service Discovery
Once you have a sufficient number of services you need to orchestrate and deploy into a flexible topology, you have the problem of allowing the services to find each other. Static configuration will no longer cut it.
This article lays out the mature, open-source options available to solve that particular problem.
What’s more, this week we found out that Spring plays quite well with one of these solutions – Netflix’s Eureka: Microservice Registration and Discovery with Spring Cloud and Netflix’s Eureka
>> From Primitive Obsession to Domain Modelling
Sometimes, the domain is the right place to put it.
>> Retiring Python as a Teaching Language
I’ll take pragmatic thinking wherever I can find it. And this reads as both sensible and pragmatic, when trying to answer the question: What’s the best programming language a beginner should start with?
>> Don’t Break the Streak Maybe
An interesting read showing how the well known productivity advice “Don’t break the streak” is now backed into a lot of products. And then blindly doing it just because it’s there.
3. Comics
My favorite Dilberts of the week:
>> Forage during the day. Hide at night.
>> The mandatory impractical requirement
>> The usual project plan arc.
4. 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.
