Red Hat Senior Architects Marius Bogoevici and Christian Posta recently presented an overview of event-driven architecture, taking the audience from the basics of enterprise integration to microservices and serverless computing. Standing in front of a packed room at Red Hat Summit, their talk addressed four basic points:
- Event-driven architectures have been around for a while. What are they, why are they powerful, and why are back en vogue?
- Messaging is often used as a backbone for event-based distributed systems. What options do we have for cloud-native event-driven architectures?
- Integration is necessary for any organization. How do streaming, cloud-native architectures, and microservices fit in?
- Are Functions-as-a-Service (FaaS) the next utopian architecture? Where do functions fit in a world of microservices?
The entire session was done with three enterprise concerns in mind. First is the divide between agile systems and purpose-built systems. While the purpose-built system is optimized for a small set of use cases, it is very difficult to change if new use cases arise or the old use cases become irrelevant. We have to be agile to adapt to a constantly changing environment. Another concern is resource utilization. We want to eliminate waste and get the most out of our systems and resources, although the cloud in general and containers in particular make more distributed architectures practical. Finally, Christian made the observation that we cannot build complex systems from complex parts. The components we develop must be as simple and understandable as possible.
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Serverless computing (often called Functions-as-a-Service, or FaaS) is one of the hottest emerging technologies today. The OpenWhisk project, currently in incubation at Apache, is an open-source implementation of FaaS that lets you create functions that are invoked in response to events. Our own Brendan McAdams gave a presentation and demo that explained the basics of serverless, how the OpenWhisk project works, and how to run OpenWhisk in OpenShift.
Brendan outlined the three properties of a serverless / FaaS platform:
- It responds to events by invoking functions
- Functions are loaded and executed on demand
- Functions can be chained together with triggered events from outside the FaaS platform itself.
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You’re in an IT department. How does the rest of the organization see you? As a valuable asset whose code and APIs make a difference in the marketplace, or as a necessary evil that should be trimmed as much as possible? Containers, microservices, and serverless computing can make you more responsive, flexible, and competitive, which in turn makes your organization more effective. And that puts you solidly in the asset column.
After sprinting through the streets of San Francisco from the stage of the opening keynote at Red Hat Summit 2018 (replay available here), Burr Sutter hosted a packed house in Moscone South to talk about these technologies. Containers are widely accepted (see the announcement from Red Hat and Microsoft for an example), microservices are increasingly popular as an approach to modernizing monolithic applications, and serverless computing is emerging as an important new programming model.
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If you are interested in serverless computing / Functions-as-a-Service (FaaS), and are not following the OpenShift blog, you should checkout The State of Functions-as-a-Service on Kubernetes. This video is part of the OpenShift Commons Briefing series, which has a lot of great content for developers who interested in cloud-native applications and microservices running on OpenShift and Kubernetes.
FaaS, or serverless as some call it, is a promising compute paradigm suitable for event-driven scenarios. In this briefing, Red Hat’s Michael Hausenblas and Brian Gracely reviewed the current open source offerings for FaaS on Kubernetes (Apache Open Whisk, kubeless, OpenFaaS, etc.) and discussed the pros and cons, on an architectural level and a user experience (UX) point of view. They also covered the topic FaaS vs. containers from a developers as well as an operators perspective.
This talk builds on material gathered by the Serverless Working Group , which is part of the Cloud Native Computing Foundation (CNCF). CNCF serves as the vendor-neutral home for many of the fastest-growing projects on GitHub, including Kubernetes, Prometheus, and Envoy.
Video, slides, and other resources:
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On behalf of the selection teams for Modern Application Development, I am pleased to share this exciting, dynamic, and diverse set of developer-related breakouts, workshops, BoFs, and labs for Red Hat Summit 2018.
With these 61+ sessions listed below, we believe that every attending application developer will come away with a strong understanding of where Red Hat is headed in this app dev space, and obtain a good foundation for tackling that next generation of apps. Encompassing various aspects of Modern App Dev, some sub-topics we’ve focused on are around microservices, service mesh, security and AI/ML, plus there is a large collection of complementary and related topics.
So…if you’re an application developer, we invite you to attend Red Hat Summit 2018 and experience the code first hand. There’s something for everyone and definitely something for you. Register today.
Great talks don’t happen without great speakers, and we feel really privileged to have these popular, high-in-demand speakers:
Continue reading “Red Hat Summit 2018 to focus on Modern App Development”