DevoxxUA 2021. David Leitner. Rethinking Reactive Architectures

Описание: The talk from Devoxx Ukraine 2021 ONLINE
Fb: www.facebook.com/DevoxxUkraine/
Website: www.devoxx.com.ua

Modern software architectures are amidst a paradigm shift — more and more software landscapes are built upon asynchronous and reactive patterns. This movement is understandable, as it takes scalability, resilience, and real-time integration to an elusive new level. Unfortunately, we observe that many new customer projects only use parts of this paradigm shift sensibly, leading to a lot of accidental complexity without utilising the full potential of reactivity. We will start by unpacking the core theories and ideas behind the reactive manifesto. This foundation will allow us to understand how to build reactive microservices upon event streams (and event sourcing) and asynchronous integration patterns. Based on this knowledge, we will introduce GraphQL to dive into the concept of hydrations and projections, which uncovers the full potential of FaaS. Optimistic UIs will bring in the final finish to end up with a cloud-native and push-based architecture where elasticity and resilience are treated as first-class citizens. Upon a closer look at the advantages and challenges we've experienced in customer projects, it turns out that such reactive architecture can be a perfect fit but are not a silver bullet either. Instead, they are suited for a specific set of problems. In a nutshell, reactive architectures can be a game-changing tool to build cloud-native, highly responsive, and resilient applications. This talk will give the needed knowledge to decide if it's a good fit.