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Jetty is a small, highly-scalable Java-based web server and servlet engine. It supports HTTP/2, WebSockets, and many other protocols. It powers websites and frameworks, both large and small, such as Google AppEngine. Because it is an Eclipse project, its open source project is called Eclipse Jetty. It is standards-compliant and…
Read moreYou will use Vue and Spring Boot to build a todo list web application. The application will include CRUD abilities, meaning that you can create, read, update, and delete the todo items on the Spring Boot API via the client. The Vue frontend client will use the Quasar framework for…
Read moreIn this tutorial, you'll use JHipster to build a microservice stack and deploy it to Amazon Elastic Kubernetes Service (EKS). The microservices will use Java and Spring Boot for resource servers and Vue for the frontend. The server-side applications will use Spring's Reactive technology stack. The microservice will include multiple…
Read moreIn 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 persistent store for one of the services. For security, you'll use Okta as an OAuth 2.0 and OpenID Connect (OIDC) provider. You'll also securely encrypt all…
Read moreSpring Cloud Contract was created as a way to help test interconnected microservices. Generally speaking, there are two options when testing microservices: 1) you can deploy the entire mesh of services in your integration tests and test against that, or 2) you can mock each service in your integration tests.…
Read moreIn this tutorial, you are going to create a single-page application (SPA) that uses a Spring Boot resource server and a Vue front-end client. You'll see how to configure Spring Boot to use JSON Web Tokens (JWT) for authentication and authorization, with Okta as an OAuth 2.0 and OpenID Connect…
Read moreSpring Cloud Sleuth allows you to aggregate and track log entries as requests move through a distributed software system. In a monolithic system, it's relatively easy to track requests as they move through the codebase because all requests can easily be logged to the same log file. You can generally…
Read moreThe client credentials grant is used when two servers need to communicate with each other outside the context of a user. This is a very common scenario—and yet, it's often overlooked by tutorials and documentation online. In contrast, the authorization code grant type is more common, for when an application…
Read moreMicroProfile is an open-source community project with the goal to encourage the development of Java microservice solutions. It was created in 2016 in response to the changing needs of modern web development. In particular, it seeks to foster the development of smaller, less monolithic services (microservices) that can run on…
Read moreIn this tutorial, you're going to use Spring Boot and Spring Data to build a fully functioning web service with ridiculously little effort. You're also going to use Okta to secure the web service using professional, standards-compliant OIDC JWT authentication. All of this will be bootstrapped by the Okta CLI.
Read moreMuch like React or Angular, Vue.js is a JavaScript view library. When coupled with a state management library like MobX, Vue.js becomes a full-featured application framework. Vue.js is designed to be incrementally adoptable, so you can use as much or as little of it as you like. Like React, Vue.js…
Read more11 min read
Serverless is the next iteration in cloud management. First, we let go of having physical hardware servers and moved all of our servers into the cloud because, hey, why bother managing all that hardware? This created cloud infrastructure providers that resulted in behemoths like Amazon and Google. Now, they're saying,…
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In this tutorial, you'll learn how to create a Spring Cloud Stream application that interacts with a messaging service, such as RabbitMQ or Apache Kafka. You're going to do this using functional, reactive code by utilizing Spring's WebFlux and by taking advantage of Spring Cloud Stream's functional binding model.
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In this tutorial, you're going to use Apache Kafka and Quarkus to create a secure, scalable web application. The application will use Kafka Streams and a small Kafka cluster to consume data from a server and push it to a client application as a real-time stream. You will secure the…
Read moreIn this tutorial, you're going to build a client and server application using React for the frontend and Kotlin with Spring Boot for the backend. You'll first build the app unsecured before securing it using Okta. To secure the React frontend, you'll use OAuth 2.0 login, and for the backend,…
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This tutorial leverages two technologies that are commonly used to build web services: MongoDB and Java (we'll actually use Spring Boot). MongoDB is a NoSQL database, which is a generic term for any non-relational databases and differentiates them from relational databases. Relational databases, such as SQL, MySQL, Postgres, etc..., store…
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Netty is a non-blocking input/output (NIO) framework that makes it relatively simple to develop low-level network servers and clients. Netty provides an incredible amount of power for developers who need to work down on the socket level, for example when developing custom communication protocols between clients and servers. It supports…
Read moreQuarkus is a container-first Kubernetes Java framework designed to have a super-fast start-up time and low memory usage. The container-first strategy emphasizes packaging the runtime environment along with the application code, allowing both to be tightly optimized and avoiding the endless updates and configuration problems that can come along with…
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In the Java world, there are two main build systems: Gradle and Maven. A build system chiefly manages potentially complex webs of dependencies and compiles the project. It also packages the compiled project along with all the resources and meta files into the final .war or .jar file. For simple…
Read moreJavaFX, a library of user interaction controls, allows Java developers to build cross-platform desktop applications and internet application. It was intended as a replacement for Swing (if you're old like me and remember that).
Read moreDocker is a very popular system for containerizing applications. Containerization packages the executable code along with the runtime environment in deployable virtual images using a repeatable, automatable process.
Read moreIn this post, you will learn how to build a simple REST API using Eclipse MicroProfile and secure it using JSON Web Token (JWT) authentication. You'll also use a free developer account from Okta to configure an OAuth 2.0 / OpenID Connect (OIDC) application as the OAuth provider, with role-based…
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This tutorial will explore two ways to configure authentication and authorization in Spring Boot using Spring Security. One method is to create a WebSecurityConfigurerAdapter and use the fluent API to override the default settings on the HttpSecurity object. Another is to use the @PreAuthorize annotation on controller methods, known as…
Read moreAuthentication is vital to all but the most basic web applications. Who is making the request, wanting data, or wanting to update or delete data? Can you be sure that the request is coming from the stated user or agent? Answering this question with certainty is hard in today's computer…
Read moreIn this post, you're going to work through various options for implementing a login feature using Spring Boot 2.1. You'll start with the most simple, basic auth, which you'd likely never want to use except for perhaps an internal backend tool, and move on to a simple form-based authentication page.…
Read moreIn this tutorial, you're going to use Kubernetes to deploy a Spring Boot microservice architecture to Google Cloud, specifically the Google Kubernetes Engine (GKE). You're also going to use Istio to create a service mesh layer and to create a public gateway. The whole thing is going to be secured…
Read moreWhen building a web application, authentication and authorization is a must. Doing it right, however, is not simple. Computer security is a true specialty. Legions of developers work day and night against equally numerous international hackers creating a continual development cycle of finding vulnerabilities, attacking them, and fixing them. Keeping…
Read moreReactive apps allow you to scale better if you're dealing with lots of streaming data. They're non-blocking and tend to be more efficient because they're not tying up processing while waiting for stuff to happen.
Read more7 min read
Social login is a great way to offer your customers a simple and secure authentication method. Why force them to create and forget yet another password? The vast majority of your users will have an account with Facebook or Google, so why no go ahead and let them use one…
Read moreEvery non-trivial application needs a way to save and update data: a resource server that is accessible via HTTP. Generally, this data must be secured. Java is a great language with decades of history in professional, enterprise development, and is a great choice for any application's server stack. Within the…
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Java support for JWT (JSON Web Tokens) used to require a lot of work: extensive customization, hours lost resolving dependencies, and pages of code just to assemble a simple JWT. Not anymore!
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JSON Web Tokens have quickly become the standard for securing web applications, superseding older technologies like cookies and sessions. Used properly, they address a range of security concerns, including cross-site scripting attacks (XSS), man-in-the-middle attacks (MITM), and cross-site request forgery (CSRF). They also give us the benefit of inspectable metadata…
Read moreWhen's the last time you had fun building a web application? We love Spring Boot because it makes it super easy to build a rich Java web application, and it can even be pretty fun. By combining Spring, Spring Boot, and Gradle, we have a complete build system that can…
Read moreDevelopers know that securing web apps can be a pain. Doing it right is tough. The worst part is that "right" is a moving target. Security protocols change. Vulnerabilities are found in dependencies and patches are released. Tons of often complex boilerplate code has to be generated. The software-as-service paradigm…
Read moreGraphQL is a data query language developed by Facebook in 2012 to solve a shortcoming of REST APIs and traditional database models. All too often, when programmers write REST API data queries, they default to retrieving entire data structures when they need only a part of it. For example, if…
Read moreWe've all seen social login. It's the "Log in with Facebook" or "Log in with Twitter" buttons we see below every username and password field on the Internet. But why do these exist?
Read moreOAuth 2.0 has quickly become an industry standard for third party authentication for web applications. It's a super secure strategy, when implemented properly, but getting it right can be hard. Fortunately, you don't have to go it alone. Okta has done it for you. This is one place where it's…
Read moreGrails and Groovy can be a great alternative to Spring Boot, in some specific use cases. In this post, we'll start with that basic Grails app that already has secure authentication via Okta, and add some additional features. In this tutorial you will:
Read moreWhat is Grails, what is Groovy, and why would we choose them over Spring Boot? In this post I'll walk you through implementing server-side authentication in Grails using OAuth 2.0 and Okta. Before we dive in, however, I want to talk a little bit about why you'd be using Grails…
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