In 2013, GitHub released a search feature that allows users to scan code in all public repositories. A day after the release, however, they had to partially shut it down. It was speculated that the shutdown was because the feature allowed any user to search for all kinds of secrets…
Read moreOne of the traditional approaches for communicating between microservices is through their REST APIs. However, as your system evolves and the number of microservices grows, communication becomes more complex, and the architecture might start resembling our old friend the spaghetti anti-pattern, with services depending on each other or tightly coupled,…
Read moreContinuous integration and delivery (CI/CD) are essential practices for modern software development. In this post we cover the basics of how to add CI/CD for a JHipster microservices architecture and Kubernetes as the target cloud deployment environment.
Read moreCloud adoption continues to increase rapidly worldwide, and not only in the software industry. Every year more and more companies move their applications to the cloud. In the last JHipster community survey, from December 2021, participants valued JHipster's ability to get them to production faster, and requested more tutorials on…
Read moreThe Thymeleaf library has been around at least for 10 years and it is still actively maintained as of today. It is designed to allow stronger collaboration between design and developer teams for some use cases, as Thymeleaf templates look like HTML and can be displayed in the browser as…
Read moreYou've probably heard of Elasticsearch or the Elastic Stack. The project started as a search engine based on Lucene, an open-source search engine library built by Shay Banon to index his wife's cooking recipes. Since its early days, Elasticsearch has come a long way and has evolved into the Elastic…
Read moreWhen defining classes for a simple aggregation of values, Java developers have traditionally relied on constructors, accessors, equals(), hashCode() and toString(), an error-prone practice that has low value and shifts the focus away from modeling immutable data. Java records were introduced as a first preview in JDK 14 in order…
Read moreModern applications must work smoothly on high loads and with a high number of concurrent users. Traditional Java applications run blocking code and a common approach for scaling is to increase the number of available threads. When latency comes into the picture, many of these additional threads sit idle, wasting…
Read moreSpring ẀebClient was added as part of the reactive web stack WebFlux in Spring Framework 5.0. WebClient allows performing HTTP requests in reactive applications, providing a functional and fluent API based on Reactor, and enabling a declarative composition of asynchronous non-blocking requests without the need to deal with concurrency. One…
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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 as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation.
Read moreSpring Boot and Spring Security have delighted developers with their APIs for quite some time now. Spring Security has done an excellent job of implementing OAuth and OpenID Connect (OIDC) standards for the last few years.
Read moreSession management in multi-node applications presents multiple challenges. When the architecture includes a load balancer, client requests might be routed to different servers each time, and the HTTP session might be lost. In this tutorial, I'll walk you through the configuration of session sharing in a multi-node Spring Boot application.
Read moreNote: 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 as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation.
Read moreContinuous Integration (CI) is a popular development practice that helps to ensure software is high-quality and deployable, as you validate (compile and test) the software as soon as you check in changes to the Source Control Management System (SCM).
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Kotlin is a modern, statically typed language within the JVM. Kotlin is a cross-platform, multi-purpose, free and open-source language developed by JetBrains under the Apache 2.0 license and has constructs for both Object Oriented and Functional programming styles, which can be mixed. It can be used for web development, server…
Read moreWebSockets is a modern transport layer technology that establishes a two-way communication channel between a client and a server, perfect for low-latency, high-frequency interactions. WebSockets tend to be used in collaborative, real-time or event-driven applications, where traditional client-server request-response architecture or long polling would not satisfy requirements. Use cases include…
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Good design principles require that microservices architectures are observable, and provide a centralized monitoring tool. This tool allows development teams to verify the overall system health, inspect logs and errors, and get feedback after deployments. So what is the Elastic (or ELK) Stack and why it is an excellent option…
Read moreHave you worked with Spring Boot Actuator yet? It's an immensely helpful library that helps you monitor app health and interactions with the app - perfect for going to production! Spring Boot Actuator includes a built-in endpoint for tracing HTTP calls to your application - very useful for monitoring OpenID…
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