London Java Community

The LJC is pleased to continue our new series of events, designed to provide all members of our Community with the opportunity to present at an LJC meet-up. For this upcoming event, we are delighted to be partnering with vJUG. For those unable to attend in person, the event will also be streamed online. We are also grateful for the support of Devoxx UK, who will be contributing to the event and organising an exciting giveaway for attendees. These events are an excellent opportunity for anyone with an interesting topic to share. You do not need to be an experienced speaker—whether this is your first presentation or one of many, we offer a welcoming, informal platform where you can practice, develop your skills, and share your insights with the Community. For attendees, this is not only an opportunity to hear from new and familiar voices but also a chance to connect and network with fellow technologists in London. If you are interested in speaking at a future event, we encourage you to submit your talk and biography details here: https://sessionize.com/ljc/ Huge thanks to our friends at Microsoft for hosting this event and supporting our Community." Speaker One: Nelson Ekpenyong Reactive Programming: Unleashing High-Performance, Non-Blocking APIs for Real-Time Applications. Reactive programming offers a paradigm shift, enabling us to design systems that can handle a high volume of requests while maintaining responsiveness. Building responsive, resilient, and scalable applications is critical in today's world. Yet traditional synchronous programming models often limit performance, especially in I/O-bound applications. This talk dives into the essentials of reactive programming and its practical application using Spring WebFlux. I'll start by demystifying the core concepts of reactive streams, Mono, and Flux, and understanding how non-blocking APIs differ from traditional blocking ones. Using real-world scenarios, we’ll explore how to build efficient endpoints with WebFlux, manage backpressure, and leverage reactive database connections through R2DBC. Additionally, I'll cover best practices for error handling and testing reactive applications. Speaker Two: Dan Erez Java and the 'Infra From Code' vision 'Infra as code' is a common practice today, but it still requires preparing yaml configurations, frequent updates as the applications changes, etc. But why not deduce the needed infra from the code itself? 'Infra FROM code' is the new vision, claiming the code has all the needed information within it. Let's explore that and see how can Java be the first language to fulfill this novel concept. This event is organised by RecWorks on behalf of the London Java Community. The London Java Community is sponsored by Hazelcast, Vonage, Neo4j, and Discover