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Many libraries for AI app development are primarily written in Python or JavaScript. The good news is that several of these libraries have Java APIs as well. In this tutorial, I'll show you how to build a ChatGPT clone using Spring Boot, LangChain, and Hilla.
The tutorial will cover simple synchronous chat completions and a more advanced streaming completion for a better user experience.
When it comes to managing large amounts of data in a distributed system, Apache Cassandra and Apache Pulsar are two names that often come up.
Apache Cassandra is a highly scalable NoSQL database that excels at handling high-velocity writes and queries across multiple nodes. It is an ideal solution for use cases such as user profile management, product catalogs, and real-time analytics.
You will build a full-stack reactive web app that sends and receives messages through Kafka. The app uses Spring Boot and Java on the server, Lit and TypeScript on the client, and the Hilla framework for components and communication.
Apache Kafka is a distributed event streaming platform. You can think of it as a publish/subscribe system on steroids. Kafka producers can send messages to a topic, and consumers can then read those messages. However, unlike most pub/sub systems, the messages do not get removed from the topic when you read them. This allows you to perform stream processing to analyze, aggregate, or transform data from different events in real-time.
You will build a full-stack chat application with a Java Spring Boot back end, reactive data types from Project Reactor, and a Lit TypeScript front end. In addition, you will use the Hilla framework to build tools and client-server communication.
The video below walks you through this tutorial step-by-step, if you prefer to learn by watching.
Marcus Hellberg explains what Vaadin Fusion full-framework is and how it leverages Lit, MobX, and Spring Boot to make building web apps easy.
(If you love Vaadin's 100% pure Java Flow framework, do not panic! Fusion is not a replacement. Instead, it complements Flow.)