Articles tagged microservices
Micro Frontends for Java Microservices
Microservices have been quite popular in the Java ecosystem ever since Spring Boot and Spring Cloud made them easy to build and deploy. Things have gotten even easier in recent years with the proliferation of new Java frameworks built specifically for microservices: MicroProfile, Micronaut, Quarkus, and Helidon. Not only do these frameworks provide an excellent developer experience, but they also tend to have built-in Docker support. They even work with GraalVM, so you can compile...
Communicate Between Microservices with Apache Kafka
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. One of the traditional approaches for communicating between microservices is through their REST APIs. However, as your system evolves and the number of microservices...
JHipster Microservices on AWS with Amazon Elastic Kubernetes Service
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. In this tutorial, you’ll use JHipster to build a microservice stack and deploy it to Amazon Elastic Kubernetes Service (EKS). The microservices will use...
Kubernetes Microservices on Azure with Cosmos DB
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. In this tutorial, you’ll learn how to deploy a JHipster-based reactive microservice to Azure Kubernetes Service (AKS). You’ll use Azure’s Cosmos DB as a...
Authentication Patterns for PHP Microservices
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Microservices are an increasingly popular architecture, as they allow you to split application development into smaller, easier-to-manage pieces. However, microservices introduce complexity when it...
Java Records: A WebFlux and Spring Data Example
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. When defining classes for a simple aggregation of values, Java developers have traditionally relied on constructors, accessors, equals(), hashCode() and toString(), an error-prone practice...
Session Clustering for OAuth 2.0 Applications
{% include integrator-org-warning.html %} A common OAuth 2.0 question we get: "How do I deal with OAuth in a load-balanced application?" The short answer: There’s nothing specific about session clustering for OAuth. The longer answer is—you likely still need to worry about cluster session management. This post will discuss how an OAuth login relates to your application’s session. And we’ll build a simple, secure, load-balanced application to demonstrate. Prerequisites Docker 20.10+ Java 11+, use SDKMAN...
Content Negotiation with a Java MicroProfile Application
Content negotiation allows for an HTTP server to respond to different types of clients. Many modern clients expect a JSON response, but there may be a need to format responses differently, maybe XML for older clients or a binary format for newer ones. Content negotiation is the mechanism used to solve that problem and others, such as dealing with multiple languages and even compressing HTTP requests. In this post, I’ll walk through building a simple...
Reactive Java Microservices with Spring Boot and JHipster
{% include integrator-org-warning.html %} :toc: macro :page-liquid: :experimental: Java has been at the forefront of microservice architectures since they came to prominence a few years ago. It’s a popular language with well-known, high-quality frameworks, like Spring Boot, Spring Cloud, Spring Data, and Spring Security. Spring Boot 2.0 introduced a new web framework called Spring WebFlux. Previous versions of Spring Boot only shipped with Spring MVC as an option. WebFlux offers a way for developers to...
Scaling Secure Applications with Spring Session and Redis
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Spring Boot and Spring Security have delighted developers with their APIs for quite some time now. Spring Security has done an excellent job of...
Spring Cloud Config for Shared Microservice Configuration
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. The microservice architecture pattern, in which business functionality is distributed among many small atomic applications as opposed to one or two monolithic chunks, is...
Security Patterns for Microservice Architectures
If you attend a lot of Java ecosystem conferences, you’ll think that everyone uses microservices. It’s a trendy topic, and developers everywhere are interested in learning about them. For a good reason too! Microservice architectures are a technique for delivering code faster. Chris Richardson is a friend and expert on microservices. He suggests a helpful guideline in a recent blog post: Why microservices? IF you are developing a large/complex application AND you need to deliver...
Node Microservices: From Zero to Hero
Node is one of the premier frameworks for microservice architecture today. The microservice pattern allows developers to compartmentalize individual components of a larger application infrastructure. Because each component runs independently, you can upgrade or modify components without impacting the larger application. Each component exposes an interface to external consumers who are blind to any internal logic the service does. One of the challenges of working in a microservice environment is the process of one service...
Communicate Between Microservices with Apache Kafka
Get Started with the ELK Stack
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Good design principles require that microservices architectures are observable, and provide a centralized monitoring tool. This tool allows development teams to verify the overall...
Secure Reactive Microservices with Spring Cloud Gateway
So you wanna go full reactive, eh? Great! Reactive programming is an increasingly popular way to make your applications more efficient. Instead of making a call to a resource and waiting on a response, reactive applications asynchronously receive a response. This allows them to free up processing power, only perform processing when necessary, and scale more effectively than other systems. The Java ecosystem has its fair share of reactive frameworks, including Play Framework, Ratpack, Vert.x,...
How to Win at UI Development in the World of Microservices
Microservices have become a popular and effective design for scaling development teams in large companies. A microservices architecture enables you to build and deploy services independently, providing developers autonomy, enthusiasm, and a passion for their work. These benefits are realized because they feel a sense of control over their own destiny. Allow me to demonstrate with a story about my time at LinkedIn. In early 2008, they asked me to do an analysis of Ruby...
Build Secure Microservices in PHP
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. The history of software is a history of improving architectures - from the underlying hardware, OS and virtualization platforms, programming languages and frameworks, to...
Java Microservices with Spring Cloud Config and JHipster
{% include integrator-org-warning.html %} :page-liquid: :toc: macro Developing a microservice architecture with Java and Spring Boot is quite popular these days. It’s definitely one of the most popular combinations in the Java ecosystem. If you need any proof, just look at all of the similar frameworks that have cropped up in the last few years: MicroProfile, Micronaut, and Quarkus, just to name a few. Spring Boot provided a much-needed spark to the Spring ecosystem when...
Java Microservices with Spring Boot and Spring Cloud
{% include integrator-org-warning.html %} :page-liquid: :toc: macro Java is a great language to use when developing a microservice architecture. In fact, some of the biggest names in our industry use it. Have you ever heard of Netflix, Amazon, or Google? What about eBay, Twitter, and LinkedIn? Yes, major companies handling incredible traffic are doing it with Java. Implementing a microservices architecture in Java isn’t for everyone. For that matter, implementing microservices, in general, isn’t often...
Build a Microservice Architecture with Spring Boot and Kubernetes
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. In this tutorial, you’re going to use Kubernetes to deploy a Spring Boot microservice architecture to Google Cloud, specifically the Google Kubernetes Engine (GKE)....
Build Secure Microservices with AWS Lambda and ASP.NET Core
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Microservices are fun to build and offer us a scalable path to overcoming problems with tightly coupled dependencies that plague monolithic applications. This post...
Secure Service-to-Service Spring Microservices with HTTPS and OAuth 2.0
{% include integrator-org-warning.html %} :page-liquid: :toc: macro Building a microservices architecture is possible with minimal code if you use Spring Boot, Spring Cloud, and Spring Cloud Config. Package everything up in Docker containers and you can run everything using Docker Compose. If you’re communicating between services, you can ensure your services are somewhat secure by not exposing their ports in your docker-compose.yml file. But what happens if someone accidentally exposes the ports of your microservice...
Build Spring Microservices and Dockerize Them for Production
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. In this post, you’ll learn about microservices architecture and how to implement it using Spring Boot. After creating some projects with the technique, you...
Build and Secure Microservices with Spring Boot 2.0 and OAuth 2.0
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Spring Boot has experienced massive adoption over the last several years. For Spring users, it offers a breath of fresh air, where they don’t...
Develop a Microservices Architecture with OAuth 2.0 and JHipster
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. JHipster is a development platform to generate, develop, and deploy Spring Boot + Angular web applications and Spring microservices. It supports using many types...
Secure a Spring Microservices Architecture with Spring Security and OAuth 2.0
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Building a microservices architecture with Spring Boot and Spring Cloud can allow your team to scale and develop software faster. It can add resilience...
Secure a Spring Microservices Architecture with Spring Security, JWTs, Juiser, and Okta
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. You’ve built a microservices architecture with Spring Boot and Spring Cloud. You’re happy with the results, and you like how it adds resiliency to...
Develop and Deploy Microservices with JHipster
JHipster is one of those open-source projects you stumble upon and immediately think, “Of course!” It combines three very successful frameworks in web development: Bootstrap, Angular, and Spring Boot. Bootstrap was one of the first dominant web-component frameworks. Its largest appeal was that it only required a bit of HTML and it worked! Bootstrap showed many in the Java community how to develop components for the web. It leveled the playing field in HTML/CSS development,...
Build a Microservices Architecture for Microbrews with Spring Boot
Adopting a microservice architecture provides unique opportunities to add failover and resiliency to your systems, so your components can handle load spikes and errors gracefully. Microservices make change less expensive too. It can also be a good idea when you have a large team working on a single product. Your project can likely be broken up into components that can function independently of one another. Once components can function independently, they can be built, tested,...